ODYSSEY MARINE EXPLORATION INC - Annual Report: 2010 (Form 10-K)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark one)

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2010

Commission File Number 001-31895

ODYSSEY MARINE EXPLORATION, INC.

(Exact name of registrant as specified in its charter)

5215 W. Laurel Street, Tampa, Florida 33607

(Address of principal executive offices)

(813) 876-1776

(Registrant’s telephone number including area code)

Securities registered pursuant Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Act.    Yes  ¨    No  x

Indicate by mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ¨    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

The aggregate market value of the 63 million shares of voting stock held by non-affiliates of Odyssey Marine Exploration, Inc. as of June 30, 2010 was approximately $63 million. As of March 1, 2011, the Registrant had 67,082,835 shares of Common Stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

The information required by Part III of this Form 10-K is incorporated by reference to the Company’s Definitive Proxy Statement for the Registrant’s Annual Meeting of the Shareholders to be held on June 1, 2011.

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As used in this Annual Report on Form 10-K, “we,” “us,” “our company” and “Odyssey” mean Odyssey Marine Exploration, Inc. and our subsidiaries, unless the context indicates otherwise.

PART I

This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Act of 1934. The statements regarding Odyssey Marine Exploration, Inc. and its subsidiaries contained in this report that are not historical in nature, particularly those that utilize terminology such as “may,” “will,” “should,” “likely,” “expects,” “anticipates,” “estimates,” “believes,” “plans,” or comparable terminology, are forward-looking statements based on current expectations and assumptions, and entail various risks and uncertainties that could cause actual results to differ materially from those expressed in such forward-looking statements.

Important factors known to us that could cause such material differences are identified in this report and in our “RISK FACTORS” in Item 1A. Accordingly, readers of this Annual Report on Form 10-K should consider these factors in evaluating, and are cautioned not to place undue reliance on, the forward-looking statements contained herein. We undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

ITEM 1. BUSINESS

Overview

Odyssey Marine Exploration, Inc. is a world leader in shipwreck exploration, with expertise in innovative search technology and archaeological recovery operations on deep-ocean shipwrecks throughout the world. In 2010, we leveraged our core business expertise and technology for exploration services for use in insurance investigations, search and recovery operations to governments and deep-ocean mineral exploration.

We employ advanced state-of-the-art technology, including side-scan sonar, magnetometers, remotely operated vehicles (ROVs), and other advanced equipment that enables us to locate and recover shipwrecks and other objects lost at sea at depths that were previously unreachable in an economically feasible manner. Odyssey continues to build on a foundation of shipwreck research, government relationships and the development of pioneering techniques in deep-ocean exploration. Although we utilize technologies that have been developed at great expense in other fields, primarily the military, oil and telecommunications industries, we use our unique expertise to modify and customize these technologies to create proprietary applications specific to our markets’ needs.

Our shipwreck projects go through several phases, beginning with research and development and search operations. Once a site that meets our criteria is identified, we undertake an archaeological excavation of the site. The excavation stage is followed by conservation, recording and documentation. Throughout every phase, the Odyssey team shares the knowledge gained through our expeditions with the world.

We share this information through a variety of media including television, the Internet, books, research papers, periodicals, educational programs and traveling exhibits. We maintain several Internet sites including www.shipwreck.net, www.odysseysvirtualmuseum.com and www.shipwreckstore.com. We also allow collectors to own a piece of history from a shipwreck’s cargo, thereby providing an opportunity for everyone interested in shipwrecks to participate in Odyssey’s fascinating discoveries at the level of their choice. Information that is included on or linked to our Internet sites is not considered part of this Annual Report.

Project and Research Criteria

The United Nations Educational Scientific and Cultural Organization, or UNESCO, has estimated that there are up to 3,000,000 shipwrecks contained within the oceans of the world. Historical records suggest that many were lost with verifiable cargoes of intrinsically valuable material. Odyssey’s research department maintains data on thousands of shipwrecks and continuously develops new potential projects.

Project research may focus on a particular search area where historical documents suggest recorded and unrecorded high-value targets may rest due to the proximity of shipping routes frequented by vessels carrying rich cargoes.

Each project that targets a specific shipwreck begins with the research necessary to evaluate the potential value, location and viability of finding the wreck. Research is also necessary to establish the historical significance of the sunken ship and helps define the context in which the ship sank—essential for preparing an archaeological project plan and the complex logistics that precede excavation of a site.

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Our marine research department continuously conducts research in an attempt to identify shipwreck projects that meet the following criteria:

Search Operations

Shipwreck search operations are conducted from a research vessel fitted with survey equipment and often with a Remotely Operated Vehicle (ROV). Odyssey’s ships can conduct deep-sea search operations 24 hours a day, seven days a week and have been deployed throughout the world - in the English Channel, the Mediterranean Sea, and the Atlantic and Pacific Oceans. A search typically begins with a side-scan sonar survey of the target area, which is typically paired with a magnetometer survey and multi-beam bathymetric surveys in some cases. The most interesting anomalies on the ocean floor are then inspected visually with an ROV, which sends real-time video images to monitors on the survey vessel for observation by the scientific and technical teams. These images are also downloaded and saved for additional evaluation ashore. Sometimes, it is immediately obvious whether the inspected site is of interest or not - as in the case of geology, modern debris, or when coins or valuables are readily apparent on the site. In other instances, it may take additional research and return visits to a site to arrive at probable or positive identity and to determine the next step forward.

Archaeological Excavation and Recovery

Archaeological excavation and recovery operations combine Remotely Operated Vehicles (ROVs) with sophisticated positioning systems, cameras and specialized computer hardware and software to carefully record the location of artifacts in situ and to document the entire archaeological process as the artifacts are recovered from a shipwreck site. As they conduct robotic archaeological operations at sites hundreds and sometimes thousands of feet below the ocean surface, Odyssey’s ROV pilots are directed by marine archaeologists aboard the recovery vessel.

The Odyssey Explorer, a 251-foot Class II dynamically positioning (DP) ship, serves as Odyssey’s principal state-of-the-art deep-ocean archaeological platform for shipwreck exploration. She carries fuel and stores for missions of up to 60 days, accommodates 42 crew members, including technicians, scientists and archaeologists, and has extensive onboard storage space for workshops, an archaeology laboratory, multiple cranes and a large A-frame for exceptional handling capability. When working on a project, operations are generally conducted 24 hours a day, seven days a week.

The centerpiece of Odyssey’s advanced robotic archaeology system is the ROV, which serves as the archaeologist’s eyes and hands in the deep ocean. Odyssey owns two work-class ROVs, nicknamed ZEUS and ZEUS II. The 200HP and 400 HP vehicles, respectively, are each approximately the size of a small truck; they stand about 10 feet high and weigh 8 tons. Driven by eight powerful hydraulic thrusters, they are rated to operate up to depths of 2,500 meters (8,200 ft.). Both ROVs have been custom-designed for deep-ocean archaeological survey and recovery operations, including visual inspection, pre-disturbance photographic and video documentation, scientific excavation and artifact recovery.

Conservation and Documentation

Shipwreck finds represent a diversity of objects made up of a variety of organic and inorganic materials, including metals, ceramics, glass, leather and other materials that are of cultural, historical, archaeological or educational value. Artifacts recovered from the ocean are generally impregnated with corrosive salts that can be very damaging to the object. In particular, a saltwater environment accelerates the corrosion processes of many metal artifacts. The salts must be removed and artifacts treated in a timely and judicious manner or they will deteriorate and lose their value as diagnostic specimens, museum display objects, or valuable collector’s pieces. Therefore, the conservation process is essential to maintaining the integrity of the artifacts as important relics of the past, and for what they may contribute to the historical record and offer to the general public through exhibits, private collections and publications. Every item recovered from a shipwreck site must go through a conservation process, which in some cases may require weeks, months, or even years depending on the artifact’s material make-up, the salinity of the water from where it was recovered, and the length of time it remained in the saltwater environment.

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Sharing the Story

Odyssey is committed to sharing with the public the thrill and adventure of deep-ocean exploration as well as the historical and scientific knowledge and artifacts acquired from each shipwreck project. We provide an opportunity for collectors and anyone interested in shipwreck exploration to participate in Odyssey’s fascinating discoveries by owning select duplicate shipwreck artifacts or collectibles. Odyssey also shares this information through a variety of media portals including television, the Internet, books, research papers, periodicals, educational programs and traveling exhibits. A few of these portals are described as follows:

Sales and Marketing

Select artifacts considered “trade goods” (coins and other mass-produced cargo) are made available for sale to collectors only after conservation, thorough documentation and study. The cultural collection of artifacts is kept in our permanent collection for exhibit and further study or made available to museums or other institutions. Replicas are created of some of the permanent collection’s significant artifacts and are made available for sale.

The recovery of coins and artifacts from the SS Republic required us to create a marketing plan specifically to sell these coins and artifacts. Initially, coins were sold to independent coin dealers who sold them through direct marketing and television outlets.

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The SS Republic silver coin program was re-developed in the first quarter of 2008 to take advantage of emerging research on the silver coins from the SS Republic. This included the release of the 1861-O silver half dollar issued by the State of Louisiana in between the time it seceded from the Union and when it joined the Confederate States of America. Additionally, Odyssey continued to expand distribution channels in 2008 with a broader base of coin and collectible marketers, including opening markets overseas. In 2008, we sold through several independent dealers of which two represented 69% of total artifact sales. In 2009, we sold through several independent dealers of which two represented 72% of total artifact sales. These two dealers were AMS, Inc. and MBI, Inc. Our artifact sales including coins for 2010, 2009 and 2008 was predominantly U.S. domestic-based even though we have distributors in four continents.

The availability of raw materials is primarily dependent on the success of finding intrinsically valuable cargoes from shipwrecks (see Item 1A. Risk Factors). We recovered over 51,000 coins (approximately 4,000 $10 and $20 gold coins and 47,000 silver half dollars) and approximately 14,000 non-coin artifacts from the SS Republic. As of December 31, 2010, we have a remaining inventory of approximately 28,500 silver coins. Also, we have recovered more than 500,000 silver coins, hundreds of gold coins, worked gold and other artifacts from a site in the Atlantic Ocean code-named “Black Swan.” However, we will not have the ability to monetize the recovered cargo unless we are awarded title or a salvage award by the U.S. District Court, or negotiate a settlement with other claimants in the case.

During 2010, our primary source of revenue was from expedition charter services. Two customers, Robert Fraser Partners LLP and Dorado Ocean Resources, accounted for 82% of our charter services revenue.

During 2008 $1.9 million of expedition revenue represented charter services provided to JWM Productions in connection with the Discovery Channel television series. The agreement was renewed for 2009 in a limited format and revenue was reduced to $ .2 million. In 2009, expedition revenue also included $2 million representing compensation to provide project research and shipwreck search and survey services to Robert Fraser Marine Ltd and client companies of Robert Fraser & Partners LLP (RFP) located in the United Kingdom. Our business plan has shifted to expedition charter services in 2010 with revenues of $20.5 million which were predominantly for RFP syndicated projects and exploration charter services for subsea mineral mining.

Archaeology and Science

Many of the shipwrecks we intend to pursue may have important historical and cultural characteristics. All historically or archaeologically significant projects undertaken will be subjected to stringent archaeological standards, thus adding to the body of knowledge of the people, the history and culture of the vessel’s time. Adherence to these principles is a core value of the Company, and in addition to satisfying professional international standards, will enhance shareholder value by increasing the economic value of the artifacts and intellectual property rights of each project.

Operational Projects and Status

We have numerous shipwreck and other deep-ocean projects in various stages of development around the world. In order to protect the targets of our planned search or recovery operations, in some cases we will defer disclosing specific information relating to our projects until we have located a shipwreck or other potentially valuable resources of interest and determined a course of action to protect our property rights.

“Atlas” Search Project

Between 2005 and 2010, we searched more than 5,000 square nautical miles of seabed in the western English Channel and the Western Approaches to the Channel, recording over 270 shipwrecks. The shipwrecks discovered include site “35-F,” the Marquise de Tornay, and HMS Victory (1744). Additional high-value targets are believed to be within the “Atlas” search area, and operations in the area are expected to continue in 2011.

Site “35-F” is believed to be an armed English merchantman from the second half of the 17^th century. The site has been heavily damaged by fishing activities, and a confirmed identification may not be possible. During a preliminary investigation of the site, Odyssey discovered a rare wooden folding carpenter’s rule – the oldest ever recovered from a shipwreck site. The ruler was on display at the Museum of the History of Science at Oxford in the UK and is currently on display as part of the SHIPWRECK! Pirates & Treasure exhibit.

Additional information about the ruler recovered from Site “35-F”, the Marquise de Tornay shipwreck and HMS Victory shipwreck is available in a series of papers accessible at www.shipwreck.net/featuresarchpapers10.php and www.shipwreck.net/featuresarchpapers09.php.

Operations for the 2010 “Atlas” season commenced in April 2010 and concluded in November 2010. More than 500 square miles were mapped and at least 6 shipwrecks discovered. Additional search, inspection and verification work is planned for 2011.

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HMS Victory Project

We discovered and conducted a preliminary investigation of the shipwreck of Admiral Balchin’s HMS Victory (which sank in 1744) during our 2008 “Atlas” season. HMS Victory was the inspiration for and direct predecessor to Nelson’s Victory and was the mightiest and most technically advanced vessel of her age.

We have been cooperating closely with the United Kingdom (UK) Ministry of Defense (the “MOD”) on the project. All activities at the site, including the recovery of two bronze cannon, have been conducted in accordance with protocols approved by the UK Government and Royal Navy officials. The Victory discovery was announced publicly February 2, 2009. On September 18, 2009, we announced an agreement with the UK Government on an 80% salvage award for the cannon recovered from the site.

Odyssey is participating in the ongoing process of consultation with the UK Government to determine what approaches should be adopted towards the wreck. We have set forth a proposal that would provide for the archaeological excavation of the shipwreck at no cost to the UK Government.

Although the UK is not a signatory to the United Nations Educational Scientific and Cultural Organization’s (UNESCO) Convention for the Protection of Underwater Cultural Heritage (“CPUCH”) and therefore not bound by CPUCH, Odyssey’s proposal is consistent with the archaeological principles of the Rules of CPUCH.

“Gairsoppa” Project

On January 25, 2010, Odyssey was awarded the exclusive salvage contract for the cargo of the SS Gairsoppa by the United Kingdom (UK) Government Department for Transport. The contract was awarded after a competitive bid process and is for two years, which commenced immediately. The SS Gairsoppa was a British cargo steamer enlisted in the service of the United Kingdom for the Ministry of War Transport during World War II. It was torpedoed by a German U-Boat in February 1941 in the North Atlantic while reportedly carrying a significant cargo of silver.

Odyssey will assume the risk, expense, and responsibility for the search, cargo recovery, documentation, and marketing of the cargo. If the salvage is successful, Odyssey will be compensated with a salvage award which consists of 80% of the net value of the recovered cargo after deduction of expenses of search and salvage. This project aligns with our strategy to focus on partnership projects with several governments that provide straightforward legal ownership arrangements.

We expect to begin operations on this project during 2011.

Robert Fraser Projects (“Enigma,” “Firebrand,” “Shantaram”)

Odyssey executed agreements in 2010 with clients of Robert Fraser & Partners LLP (RFP) for three shipwreck search projects code named “Firebrand,” “Shantaram” and “Enigma II.”

In April 2010, we entered into agreements to provide project research and shipwreck search and survey services for a project code-named “Firebrand” to clients of RFP. Under the agreements, Odyssey furnished research related to “Firebrand” and its sinking and agreed to provide a research vessel, equipment and crew to search a specified area and inspect targets in that area. The contracts provided initial cash payments totaling approximately $3.2 million (of which $3.0 has been paid) as well as additional payments upon the sale of coins or artifacts from the “Firebrand” project. After repayment of salvage costs and fees, Odyssey will receive 75% of net revenue in aggregate until an additional £10.5 (approximately $17 million) has been received and then 50% in aggregate of all further net revenue. Search operations have already covered a major portion of the “Firebrand” project area and are expected to resume when weather in the area is appropriate for search operations.

In June 2010, we entered into agreements to provide project research and shipwreck search and survey services for a project code-named “Shantaram” with clients of RFP. Under the agreements, Odyssey furnished research related to “Shantaram” and its sinking and provided a research vessel, equipment and crew to search a specified area and inspect targets in that area. The contract provided for cash payments totaling approximately U.S. $3.4 million representing initial cash payments of $1.7 million and additional payments of approximately $1.5 million within 30 days and $0.2 million upon project completion, plus additional payments upon the sale of coins or artifacts from the “Shantaram” project. After the re-payment of salvage costs and fees, we will receive 75% of net revenue in aggregate until an additional £11.4 million (approximately $18.5 million) has been received and then 50% in aggregate of all further net revenue. The survey of the “Shantaram” search block is complete, and targets of interest have been inspected with a remotely operated vehicle. Of the amount owed to Odyssey, approximately $1.5 million related to the sale of research was not tendered to Odyssey. If not collected, Odyssey has the option to receive an additional percentage up to 11% of the net proceeds assuming the target project is located and monetized. A contract relating to additional operations relating to this project is being negotiated.

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In September 2010, we executed agreements to provide supplementary project research and shipwreck search and survey services for a project code-named “Enigma II” with clients of RFP. (Our initial project with RFP, which began in November 2009 code-named “Enigma”, was completed in March 2010. Eight target sites were identified, including two sites that had some of the characteristics of the “Enigma” shipwreck. However, our subsequent analysis indicated that the sites were not the “Enigma.”) As part of the agreements for the “Enigma II” project, Odyssey furnished research related to the anticipated location of the “Enigma II” and agreed to provide the research vessel, equipment and crew to search a specified area and inspect targets in that area. The contract provided for initial cash payments totaling approximately $1.6 million to Odyssey, plus additional payments upon the sale of coins or artifacts from the “Enigma II” project. After the repayment of all recovery costs, Odyssey will receive 75% of net revenue in aggregate until an additional £5.2 million (approximately $8.4 million) has been received and then 60% in aggregate of all further net revenue. Survey operations have been completed and targets of interest have been inspected with a remotely operated vehicle.

Based on preliminary results, there is evidence suggesting that at least one of the “Robert Fraser Project” target shipwrecks has been located. Additional analysis and investigation is currently underway.

In January 2011, Odyssey executed agreements to provide marine archaeological excavation and related services on an existing project to certain client companies of RFP to verify the existence of a target shipwreck. The work will be conducted on a shipwreck site that Odyssey discovered and inspected during a recently completed survey carried out under contract with the RFP client companies. Odyssey is providing the research vessel, equipment, technical and archaeological crew to conduct the operation. The contract provided for cash payments totaling approximately U.S. $2.3 million to Odyssey plus additional payments based upon revenue derived from the project. After the repayment of all recovery costs, Odyssey will receive at least 50% of net revenue until an additional £1.9 Million (approximately U.S. $3.1 million) has been received and then will receive a minimum of 50% of further net revenue in accordance with the search contracts.

Subject to the verification of the shipwreck’s identity, the condition of the cargo and confirmation of jurisdiction for administering legal rights and title to the shipwreck and its cargo, Odyssey expects to enter into additional agreements for the complete archaeological excavation of the site and for the conservation and documentation of any artifacts recovered.

We expect to close on agreements in the first quarter 2011 which would provide cash payments to Odyssey of approximately $2 million to expand a search and provide marine archaeological excavation and related services to certain client companies of RFP on and around a site that Odyssey discovered and inspected during a recently completed survey carried out under contract with the RFP client companies.

To protect the security of the operations and search areas, specific location details for “Enigma,” “Firebrand” and “Shantaram” are not being released at this time.

We expect to execute additional agreements with clients of RFP in 2011 for subsea mineral exploration projects. Under the proposed structure for these projects, Odyssey will be compensated for search and survey operations and development of geological research files on specific expeditions. If valuable mineral deposits are found and eventually sold, Odyssey will receive deferred cash payments and will benefit from its ownership in the subsea mineral exploration company (see “Subsea Mineral Exploration Projects” included in this section).

ET 409

In January 2010, Ethiopian Airlines Flight ET 409 crashed into the Mediterranean Sea shortly after take-off from Beirut International Airport in Lebanon. When ET 409 crashed, Lebanese authorities contacted Odyssey and asked the company to assist in the search and recovery efforts. The Ocean Alert returned to Beirut and was integrated into search operations that included the Lebanese Navy and Army, the U.S. Navy (USS Ramage) and a German Navy ship, the Laboe.

Before the plane wreckage was discovered, the Government of Lebanon asked Odyssey to provide additional capabilities for more complex technical documentation of the site. Odyssey sent the Odyssey Explorer, which was based in the UK, to Lebanon to assist. We were paid $1.4 million for the work completed to-date by the Lebanese government. We have also completed a video survey and photomosaic of the entire area of the wreckage and debris field under contract to the airline insurance company for a total contract price of $ 1.5 million. This groundbreaking project is believed to be the largest underwater geo-spatially accurate photomosaic ever completed, and required stitching together over 50,000 individual high resolution photos. Any additional work at the site is pending until a thorough review of the photomosaic has been completed and a report is produced by the accident investigation team.

Subsea Mineral Mining Exploration Projects

In November 2009, Odyssey acquired a 25% interest in SMM Project LLC, a company funded by a group of investors to bring together the exclusive licenses and skills of world renowned deep-ocean geologist Dr. Timothy McConachy of Bluewater Metals, the deep-ocean survey and exploration expertise of Odyssey, and the offshore coring and mining expertise of Robert Goodden and Subsea Minerals.

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SMM Project LLC purchased a majority interest in Bluewater Metals Pty Ltd, an Australian company with licenses for mineral exploration of approximately 150,000 square kilometers of ocean floor in territorial waters controlled by four different countries in the South Pacific. A new business entity, Dorado Ocean Resources Ltd (DOR), a limited liability company organized in Hong Kong, was formed to focus on the exploration and monetization of gold, silver, zinc and copper-rich Seafloor Massive Sulfide (SMS) deposits. In April 2010, DOR acquired SMM Project LLC and the remaining interest in Bluewater.

In April 2010, we purchased 1,200 shares of DOR for a purchase price of U.S. $2.0 million. Under the terms of the Share Subscription Agreement, Odyssey has the option to pay for this investment in cash or by providing marine services to DOR over a three-year period. Odyssey also exchanged its five membership units in SMM Project, LLC for 450 DOR shares bringing Odyssey’s total ownership in DOR to approximately 41%.

In March 2010, Odyssey entered into a long-term charter agreement for a vessel, the Dorado Discovery, a 311-foot DP2 vessel we mobilized with advanced mining and exploration equipment. Utilizing the vessel, equipment and proprietary expertise, we began subsea mineral exploration in the South Pacific in August 2010 under charter in areas covered by exploration permits held by DOR. The charter ended on December 15, 2010.

During Odyssey’s first 100 days of exploration under charter to Dorado, seafloor mapping of approximately 5% of Dorado’s tenements was completed; numerous rock samples, including sulfide samples, were recovered; and new mineral deposits were discovered in the waters surrounding the Solomon Islands and Vanuatu.

Mineral discovery highlights reported by Dorado’s on their first 100 days of exploration included:

During February 2011, we expanded our deep-ocean mineral exploration client base by entering into a charter agreement with Neptune Minerals PLC (a UK Company) and Neptune Minerals, Inc. (a Nevada Corp.) and Neptune Resources Ltd. (a New Zealand Company). Under the charter, the Dorado Discovery will supply geological exploration services to Neptune Minerals to explore their tenements in the waters surrounding New Zealand during the first half of 2011. This agreement provides for 75% of the charter rate to be paid in cash to Odyssey and 25% to be paid in equity of Neptune Minerals, Inc. John Morris is a principal in Neptune Minerals, Inc. and is also the cofounder and former CEO of Odyssey and continues to be a consultant to Odyssey.

After completion of the Neptune project, it is anticipated that Odyssey will continue exploration activities using the Dorado Discovery in the South Pacific for Dorado Ocean Resources and other clients.

Other Syndication Projects

In February 2011, we entered into arrangements for a project syndication deal with Galt Resources LLC. Odyssey has received approximately $5.6 million from Galt which represent rights to future revenues of any project that Galt selects prior to December 31, 2011. If the project is successful, Galt will recoup their investment plus three times the investment. These amounts will be paid out of proceeds of the project. Galt will receive 50% of the proceeds until this amount is recouped. In addition they will share in additional net proceeds of the project at the rate of 1% for every million invested. The agreement allows Galt to select only one project, and Galt will be allowed to invest up to $10 million total with the permission of Odyssey.

North Carolina Project

Operations were conducted in August and September 2009 in the area covered by the exploration permit issued by the North Carolina Department of Cultural Resources to Odyssey’s partner, Intersal, Inc. Odyssey worked under an agreement with Intersal, Inc. to pursue operations under this permit and to share in substantial research and data acquired by Intersal over the years relating to the target shipwreck and the work completed to date in the permit area.

The 2009 operations included a remote sensing in two search blocks with side-scan sonar and magnetometer, which identified multiple targets requiring additional inspection. A preliminary report and final report have been submitted to the North Carolina Department of Cultural Resources.

Although the partnership between Odyssey and Intersal resulted in positive progress on the project, Odyssey and Intersal mutually agreed to terminate the contract between the two companies, and Odyssey has no current plans to conduct operations in the Intersal permit area. Odyssey will retain a small percentage of any gross revenues realized by Intersal from shipwreck finds in the permit area.

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The area covered by the Intersal permit is located near but does not overlap Odyssey’s “Firefly” project, which was acquired by Odyssey from BDJ Discovery Group in 2007 and includes one arrested site that has produced a small number of gold and silver artifacts. Odyssey does plan to continue operations on the “Firefly” project.

“Symphony” Project

Odyssey completed the first phase of survey in a search area code named “Symphony” in 2009. The work was conducted under a government permit in an exclusive claim area and in conjunction with a project partner. Results of the survey have been analyzed and compiled into a report, which has been provided to the government for review. Preliminary review of the data suggests that four shipwrecks may have been located in the phase-one search area, but at this point, none of the sites have been conclusively identified. Research suggests the search area potentially contains at least two commercial vessels with significant cargoes of gold coins. Sea conditions in this area limit the time operations can be conducted on this project and recent government regulations have made working in the area less attractive. Operations in the area have been postponed until legal and regulatory conditions are considered more favorable.

HMS Sussex Project

The Sussex project is an expedition to locate and recover the artifacts and cargo of a large colonial-period British warship, HMS Sussex, which was lost in a severe storm in 1694. Based on documentary research conducted by contract researchers and our in-house research team in libraries and historical archives in Great Britain, France and other countries, we believe that there is a high probability the ship was carrying a cargo of coins with a substantial numismatic and collector value. Our analysis of the data was accumulated from a review of the ship’s logs, court martial records, state papers, treasury books and various other letters and reports. We conducted offshore search operations on this project in 1998, 1999, 2000 and 2001. Based on the results of these search operations, we believe there is a high probability we may have located the HMS Sussex, but this will only be confirmed after additional excavation of the site.

On September 27, 2002, we entered into an agreement with the Government of the United Kingdom of Great Britain and Northern Ireland, which we refer to as Her Majesty’s Government (HMG), which allows us to conduct an archaeologically sensitive exploration of the shipwreck believed to be HMS Sussex and to recover artifacts from the shipwreck site. The agreement provided for us to submit a Project Plan to HMG concerning the equipment, personnel and methodologies we intend to use in the exploration of the shipwreck, and the conservation and documentation of any artifacts and cargo that may be recovered. This Plan was submitted and was declared fit for purpose during 2004 with the exception of the staffing plan, which could not be completed until the actual start date was agreed upon and the availability of personnel could be determined. The staffing plan was approved during 2005 and we began exploration of the site during December 2005.

In late 2005 and early 2006, Odyssey completed to the satisfaction of HMG all work detailed in Phase 1A of the HMS Sussex archaeological project plan. The Company has also completed a portion of Phase 1B. The Company temporarily halted operations on the project at the request of the Spanish Ministry of Foreign Affairs while issues relative to the archaeological plan for excavation of the site, territorial and cultural resource management issues were negotiated.

As a sovereign warship, HMS Sussex remains the property of HMG which, to our knowledge, has not been contested by the Spanish government or other entities. As part of the partnering agreement signed between Odyssey and HMG in 2002, the following sharing arrangements have been agreed upon with respect to the aggregate amount of the appraised values and/or selling prices of the artifacts, net of agreed selling expenses:

In addition to the percentages specified above, we will also pay HMG 10% of any net income we derive from intellectual property rights associated with the project.

Under the agreement, HMG has the right to keep all artifacts together in one collection, and to then compensate Odyssey by paying us the commensurate percentage of the appraised retail value of the collection. Alternatively, HMG may decide to de-accession duplicate artifacts such as coins and to compensate us by giving us a percentage of those artifacts in an amount that correlates with the percentage of the value due us.

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Also, we received the exclusive worldwide right to use the name “HMS Sussex” in connection with sales and marketing of merchandise (exclusive of artifacts) related to the shipwreck, and HMG will receive 3% of the gross sales of such merchandise.

Our agreement with HMG is for a period of 20 years, and can only be terminated if:

The shipwreck that is believed to be HMS Sussex is located in the search area for a project that we have previously referred to as our “Cambridge” project. We sold through private placements of Revenue Participation Certificates, or RPCs, the right to share in our future revenues derived from the “Cambridge” project. As of April 30, 1999, when the offering was closed, we had sold $825,000 of the RPCs. As a group, the holders are entitled to 100% of the first $825,000 of gross revenue, 24.75% of gross revenue from $4 million to $35 million, and 12.375% of gross revenue above $35 million generated by the “Cambridge” project. Additionally, on May 26, 1998, we signed an agreement with a subcontractor that entitled it to receive 5% of the post-finance cost proceeds from any shipwrecks in a certain search area of the Mediterranean Sea. The shipwreck we believe is HMS Sussex is located within the specified search area, and we will be responsible to share future revenues, if any, from this shipwreck with the subcontractor. The subcontractor’s rights were foreclosed upon during 2002 and the purchaser was a limited liability company which was partially owned by two of our officers and directors at the time. In order to remove any potential conflicts of interest, these two persons sold their interests in the limited liability company during 2005.

Because Spain is pursuing claims against our recovery from the “Black Swan” project, the HMS Sussex project, which has involved work in the Mediterranean Sea off the coast of Gibraltar, has been delayed. See “Black Swan” in the next section.

Admiralty Legal Proceedings

“Black Swan”

In April 2007, we found and recovered approximately 594,000 coins in the Atlantic Ocean approximately 1,100 meters deep, beyond the territorial waters or contiguous zone of any sovereign nation. We filed an Admiralty arrest for this site, and we were appointed substitute custodian for all artifacts recovered from the site. Odyssey code named the site “Black Swan.” In May 2007, the Kingdom of Spain filed a notice in this case stating that the Spanish government did not intend to give up rights to any Spanish property that might be on the site.

On April 11, 2008, Odyssey filed its responses to the Court’s interrogatories and identified the Nuestra Señora de las Mercedes (the “Mercedes”), a vessel assigned to transport mail, private passengers, consignments of merchant goods and other cargoes, as one vessel potentially related to the “Black Swan” site, although there is evidence that may contradict this hypothesis. Odyssey reiterated that no vessel has been found at the site, and stated that other hypotheses were also being explored. Spain then filed its answers to the Court’s interrogatories indicating that it had concluded that the vessel related to the “Black Swan” site was the Mercedes.

Spain filed a Motion to Dismiss the case on September 22, 2008, based upon the Foreign Sovereign Immunities Act (“FSIA”), alleging that the U.S. District court lacks jurisdiction. Odyssey filed a response on November 17, 2008, to which Spain filed a reply on January 26, 2009. Odyssey filed a response to that reply on February 13, 2009. Claims have also been filed in the case by the country of Peru as well as named individuals who assert an interest in property that was aboard the Mercedes. Those named individuals have specifically acknowledged Odyssey’s right to a salvage award in the case. On May 4, 2009, Peru filed its objection to Spain’s Motion to Dismiss that Spain filed on September 22, 2008.

On June 3, 2009, a Report and Recommendation (R&R) was filed by the Magistrate Judge which recommended Spain’s Motion to dismiss the case be granted. Six separate Objections were filed, including an Objection from Odyssey, Peru, and many claiming to be descendants of merchants who owned the private cargo on the Mercedes. Odyssey’s objection included arguments that:

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Spain filed a response to the Objections on August 31, 2009. Odyssey filed a reply to that response on October 15, 2009, reiterating that the R&R had applied the wrong legal standard of review and had incorrectly interpreted factual and legal issues. On October 14, 2009, Odyssey filed a response to a statement of interest filed in the case by the United States Department (DOJ) of Justice which, while not addressing the specific jurisdictional issue before the court, supported Spain’s argument that the Nuestra Senora de las Mercedes would have been considered a sovereign vessel. The court denied Odyssey’s motion to file a declaration signed by the primary drafter of relevant legislation. A motion to file an amicus brief by members of Congress purporting to counter the DOJ filing was also denied.

On December 23, 2009, the U.S. District Judge adopted the Magistrate’s Report and Recommendation and dismissed the case based on lack of jurisdiction. The Judge ordered Odyssey to turn over the coins to Spain, but stayed that part of the order until the Eleventh Circuit Court of Appeals rules in the case, which serves to keep the coins in Odyssey’s possession pending the outcome of the case.

We filed our notice of appeal with the Federal District Court for the Middle District of Florida and Eleventh Circuit Court of Appeals on January 15, 2010, and filed the Initial Brief on appeal with the Eleventh Circuit on May 11, 2010. Spain issued its Response to our appeal on July 19, 2010, and Odyssey’s Reply to Spain’s Response was filed on August 19, 2010. The case was scheduled for oral argument in Atlanta, Georgia on March 4, 2011 but has since been changed to the week of May 23, 2011.

In its Initial Brief, Odyssey argued that the district court erroneously dismissed the case by using flawed legal analysis and by failing to acknowledge or understand several major aspects of the case, including the issue of sovereign immunity. The opening brief also points out several erroneous factual findings and legal conclusions made by the district court including the following:

Unidentified Shipwreck (Bray Case)

On December 20, 2007, Keith Bray filed an Intervening Complaint in one of our admiralty arrests (Case number 8:06-cv-1685). On February 1, 2010, Odyssey was granted Partial Summary Judgment in the case giving us title to all artifacts recovered from the site, and the in rem portion of the case was administratively closed leaving Bray’s contract claim as the only claim to be tried. Bray sought rescission of the written research contract he had executed with Odyssey claiming mutual mistake or fraud.

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On August 18, 2010 the district court dismissed Bray’s intervening complaint for lack of subject matter jurisdiction. Bray filed an appeal of the dismissal on January 3, 2011 with the Eleventh Circuit Court of Appeals. Odyssey filed its response on January 26, 2011, and Bray filed a reply to our response on February 14, 2011. The parties await a ruling from the Eleventh Circuit.

Legal and Political Issues

Odyssey works with a number of leading international maritime lawyers and policy experts to constantly monitor international legal initiatives that might affect our projects. As a matter of policy, we begin with the assumption that some entity, whether a government, private concern or insurance company, may have some rights to shipwrecks that are slated for search and recovery operations. Based on this assumption, a rigorous legal analysis is undertaken in order to ascertain which entities might be able to create roadblocks to a successful project. In some cases, such as that of HMS Sussex, it was determined that the most prudent mechanism for moving forward was to negotiate a contract with the owner of the vessel in order to manage the litigation risk.

In other cases, such as the SS Republic project, we entered into an agreement whereby we purchased the insurance company’s interest in the shipwreck and cargo, opening the way for an immediate grant of title to Odyssey by the federal court that had jurisdiction.

To the extent that we engage in shipwreck search and recovery activities in the territorial, contiguous or exclusive economic zones of countries, Odyssey intends to comply with verifiable applicable regulations and treaties. Prior to beginning operations for any project, the legal and political aspects are carefully researched to ascertain what effect these issues may have on the potential success of the operation.

These factors are taken into account in determining whether to proceed with a project as planned. Other factors, such as the UNESCO Convention for the Protection of Underwater Cultural Heritage are also taken into consideration. New political initiatives such as this Convention could restrict access to historical shipwrecks throughout the world to the extent they might require compliance with additional cultural resource management guidelines and regulations. Some of these will require adherence to strict archaeological practices and we intend to follow reasonable guidelines in all projects to which they are applicable. Greg Stemm, Odyssey’s Chief Executive Officer and co-founder, was a member of the United States delegation that negotiated the UNESCO Convention, and as such provides us with a thorough understanding of the underlying principles and ramifications of the Convention, and advance notice of other cultural resource management issues that might affect our projects.

The UNESCO Convention is not expected to impact operations in international waters, and the United States, the United Kingdom and other major maritime governments have already stated explicitly that they do not intend to sign the Convention. Nevertheless, some countries in whose waters we may consider working may sign or have already signed the Convention. While the UNESCO Convention states that artifacts may not be sold, it also states that this prohibition may not prevent the provision of archaeological services, and we intend to provide such services in contracts with governments. We believe the primary value of the cargoes we seek are trade goods (such as coins, bullion and gems), which are not artifacts of historical, archaeological or cultural significance and as such should not be subject to the rule prohibiting sale.

We believe there will be increased interest in the protection of underwater cultural heritage throughout the oceans of the world. We are uniquely qualified to provide governments and international agencies with resources to help manage these resources while providing the public with educational, scientific, historical and entertainment initiatives that originate from our shipwreck exploration activities.

Competition

There are a number of companies who publicly identify themselves as engaged in aspects of the shipwreck business, but they do not compete directly with us as an established deep-ocean archaeological shipwreck exploration company. These entities include, but are not limited to Blue Water Ventures, Mel Fisher’s Treasures, Deep Blue Marine, Marine Exploration, Inc., Oceanic Research and Recovery, Seafarer Exploration, Deep6 Ltd. and UnderSea Recovery Corporation. It is possible that one of these companies or some currently unknown group may locate and recover a shipwreck on our project roster; however, due to the breadth of our historical and archival research, the already completed sonar and deep-water ROV inspection efforts, and the number of shipwreck projects in various stages of development, we do not believe that competition from one or more of these entities, known or unknown, would materially affect our operating plan or alter our current business strategy.

Cost of Environmental Compliance

With the exception of vessel operations and conservation activities, our general business operations do not expose us to environmental risks or hazards. We carry insurance that provides a layer of protection in the event of an environmental exposure resulting from the operation of our vessels. The cost of such coverage is minimal on an annual basis. We believe the risk associated with our conservation activities is minimal.

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Executive Officers of the Registrant

The names, ages and positions of all the executive officers of the Company as of March 1, 2010 are listed below.

Gregory P. Stemm (age 53) has served as Chief Executive Officer since January 3, 2008 and prior to June 2010 was also Chairman of the Board. Mr. Stemm previously served as Vice President, Research and Operations and as a member of the Board of Directors since May 1994. He served as Co-Chairman of the Board since February 24, 2006 until his present appointment.

Mark D. Gordon (age 50) has served as President and Chief Operating Officer since October 2007 and was appointed to the Board of Directors in January 2008. Previously Mr. Gordon served as Executive Vice President of Sales and Business Development since January 2007 after joining Odyssey as Director of Business Development in June 2005. Prior to joining Odyssey, Mr. Gordon owned and managed four different start-up ventures (1987-2003).

Michael J. Holmes (age 61) has served as Chief Financial Officer since May 2004. Mr. Holmes joined Odyssey as Controller in March 2004 and had previously served in a variety of financial management positions with Anheuser-Busch Companies, Inc. to include Vice President Finance, Sea World Orlando (1998-2003).

David A. Morris (age 60) has served as Secretary since August 1997 and Treasurer from August 1997 until May 2010.

Jay A. Nudi (age 47) has served as Principal Accounting Officer since January 2006 and joined Odyssey as Controller in May 2005. Mr. Nudi assumed the additional responsibilities of Treasurer in May 2010. Prior to joining Odyssey, Mr. Nudi served as Controller for The Axis Group in Atlanta (2003-2004). Previously he served as a consultant to various companies on specific value added engagements (2001-2003).

Laura L. Barton (age 48) was appointed Vice President of Communications in November 2007. Ms. Barton previously served as Director of Corporate Communications and Marketing for Odyssey since July 2003. Ms. Barton was previously President of LLB Communications, a marketing and communications consulting company whose customers included a variety of television networks, stations and distributors and the Company (1994-2003).

Employees

As of December 31, 2010, we had 42 full-time employees, most working from our corporate offices in Tampa, Florida. Additionally, we contract crewmen who operate our two vessels and technicians who perform marine survey and recovery operations on our vessels and from time to time we hire subcontractors and consultants to perform specific services.

Internet Access

Odyssey’s Forms 10-K, 10-Q, 8-K and all amendments to those reports are available without charge through Odyssey’s web site on the Internet as soon as reasonably practicable after they are electronically filed with, or furnished to, the Securities and Exchange Commission. They may be accessed as follows: www.shipwreck.net (SEC Filings Link).

Other Financial Obligations

On March 5, 2010, we entered into a four-year charter agreement for a vessel that we began to use for subsea mineral mining exploration in the South Pacific beginning in the third quarter of 2010. The vessel charter includes a day rate of £7,000 GBP which is subject to an increase in the third and fourth years based on the average increase in the United Kingdom Consumer Price Index in the first two years. At current foreign exchange rates, the charter rate equates to approximately $11,300 per day, or $4.1 million annually. The Company can terminate the charter with a ninety day notice and a termination fee of £630,000 GBP (approximately $1,000,000). The termination fee can be eliminated or reduced if the vessel is chartered to a third party prior to the end of the termination period.

ITEM 1A. RISK FACTORS

You should carefully consider the following factors, in addition to the other information in this Annual Report on Form 10-K, in evaluating our company and our business. Our business, operations and financial condition are subject to various risks. Some of these risks are described below, and should be carefully considered in evaluating Odyssey or any investment decision relating to our securities. This section does not describe all risks applicable to Odyssey, its industry or its business. It is intended only as a summary of the principal risks. However, additional risks and uncertainties not presently known to us or that we currently deem immaterial may also impair our business operations. If any of the following risks actually occur, our business, financial condition, or operating results could suffer. If this occurs, the trading price of our common stock could decline, and you could lose all or part of the money you paid to buy our common stock.

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Our business involves a high degree of risk.

An investment in Odyssey is extremely speculative and of exceptionally high risk. Although we have access to a substantial amount of research and data which has been compiled regarding various shipwreck projects, the quality and reliability of such research and data is uncertain. Even if we are able to plan and obtain permits for our various projects, there is a possibility that the shipwrecks may have already been salvaged or may not be found, or may not have had anything valuable on board at the time of the sinking. Even if objects of value are located and recovered, there is the possibility that the excavation cost will exceed the value of the objects recovered or those others, including both private parties and governmental entities, will assert conflicting claims and challenge our rights to the recovered objects. Finally, even if we are successful in locating and retrieving objects from a shipwreck and establishing title to them, there are no assurances as to the value that such objects will bring at their sale, as the market for such objects is uncertain.

The research and data we use may not be reliable.

The success of a shipwreck project is dependent to a substantial degree upon the research and data we have obtained. By its very nature, research and data regarding shipwrecks can be imprecise, incomplete and unreliable. It is often composed of or affected by numerous assumptions, rumors, legends, historical and scientific inaccuracies and misinterpretations which have become a part of such research and data over time.

Availability of raw materials may be limited.

The availability of inventory is primarily dependent on the success of finding raw materials in the form of intrinsically valuable cargoes from shipwrecks. If we are not successful in the exploration and recovery of shipwrecks, we would not have sufficient inventory to sell.

Operations may be affected by natural hazards.

Underwater recovery operations are inherently difficult and dangerous and may be delayed or suspended by weather, sea conditions or other natural hazards. Further, such operations may be undertaken more safely during certain months of the year than others. We cannot guarantee that we, or the entities we are affiliated with, will be able to conduct search and recovery operations during favorable periods. In addition, even though sea conditions in a particular search location may be somewhat predictable, the possibility exists that unexpected conditions may occur that adversely affect our operations. It is also possible that natural hazards may prevent or significantly delay search and recovery operations.

We may be unable to establish our rights to any objects we recover.

Persons and entities other than Odyssey and entities we are affiliated with (both private and governmental) may claim title to the shipwrecks and/or valuable cargo that we may recover. Even if we are successful in locating and recovering shipwrecks and/or valuable cargo, we cannot assure we will be able to establish our right to property recovered if challenged by governmental entities, prior owners, or other attempted salvors claiming an interest therein. In such an event we could spend a great deal of time and money on a shipwreck project, and receive no salvage claim or revenue for our work.

The market for any objects we recover is uncertain.

Even if valuable items can be located and recovered in the future, it is difficult to predict the price that might be realized for such items. The value of recovered items will fluctuate with the precious metals market, which has been highly volatile in past years. In addition, the entrance on the market of a large supply of similar items from shipwrecks and/or valuable cargo located and recovered by others could depress the market.

We could experience delays in the disposition or sale of recovered objects.

The methods and channels that may be used in the disposition or sale of recovered items are uncertain at present and may include several alternatives. Ready access to buyers for any artifacts or other valuable items recovered cannot be guaranteed. Delays in the disposition of such items could adversely affect our cash flow.

Legal, political or civil issues could interfere with our recovery operations.

Legal, political or civil initiatives of countries and/or major maritime governments could restrict access to shipwrecks or interfere with our search and recovery operations.

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Objects we recover could be stolen from us.

If we locate a shipwreck and assert a valid claim to items of value, there is a risk of theft of such items at sea by “pirates” or poachers before or after the recovery or while in transit to a safe destination as well as when stored in a secured location. Such thefts may not be adequately covered by insurance.

We face competition from others.

There are a number of competing entities engaged in various aspects of the shipwreck business, and in the future other competitors may emerge. One or more of these competing entities may locate and recover a shipwreck that we intend to locate and recover. In addition, these competing entities may be better capitalized and may have greater resources to devote to their pursuit of the shipwreck.

We may be unable to get permission to conduct salvage operations.

It is possible we will not be successful in obtaining title or permission to excavate certain wrecks. In addition, permits that are sought for the projects may never be issued, and if issued, may not be legal or honored by the entities that issued them.

Changes in our business strategy or restructuring of our businesses may increase our costs or otherwise affect the profitability of our businesses.

As changes in our business environment occur we may need to adjust our business strategies to meet these changes or we may otherwise find it necessary to restructure our operations or particular businesses or assets. When these changes or events occur, we may incur costs to change our business strategy and may need to write down the value of assets. In any of these events our costs may increase, and we may have significant charges associated with the write-down of assets.

We may be unsuccessful in raising the necessary capital to fund operations and capital expenditures.

Our ability to generate cash flow is dependent upon the success of our ability to recover and monetize high-value shipwrecks. However, we cannot guarantee that the sales of our products and other available cash sources will generate sufficient cash flow to meet our overall cash requirements. If cash flow is not sufficient to meet our business requirements, we will be required to raise additional capital through other financing activities. While we have been successful in raising the necessary funds in the past, there can be no assurance we can continue to do so in the future.

We depend on key employees and face competition in hiring and retaining qualified employees.

Our employees are vital to our success, and our key management and other employees are difficult to replace. We currently do not have employment contracts with our key employees. We may not be able to retain highly qualified employees in the future which could adversely affect our business.

Our articles of incorporation authorize generic preferred stock.

Our Articles of Incorporation initially authorized the issuance of up to 10,000,000 shares of preferred stock, 190,000 shares of which have been retired. As a result, we are authorized to issue up to 9,810,000 shares of preferred stock. Our board of directors has the right to establish the terms, preference, rights and restrictions of the preferred stock. Such preferred stock could be issued with terms, rights, preferences and restrictions that could discourage other persons from attempting to acquire control and thereby insulate incumbent management. In certain circumstances, the existence of corporate devices that would inhibit or discourage takeover attempts could have a negative effect on the market value of our common stock.

We may continue to experience significant losses from operations.

We have experienced a net loss in every fiscal year since our inception except for 2004. Our losses from operations were $16.4 million in 2010, $18.6 million in 2009, and $24.8 million in 2008. Even if we do generate operating income in one or more quarters in the future, subsequent developments in our industry, customer base, business or cost structure or an event such as significant litigation or a significant transaction may cause us to again experience operating losses. We may not become profitable for the long-term, or even for any quarter.

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Technological obsolescence of our marine assets or failure of critical equipment could put a strain on our capital requirements or operational capabilities.

We employ state-of-the-art technology including side-scan sonar, magnetometer, Remotely Operated Vehicles (ROVs), and other advanced science and technology to locate and recover shipwrecks at depths previously unreachable in an economically feasible manner. Although we try to maintain redundancy on critical equipment and components, equipment failures may require us to delay or suspend operations. Also, while we endeavor to keep marine equipment in excellent working condition and current with all available upgrades, technological advances in new equipment may provide superior efficiencies than the capabilities of our existing equipment and this could require us to purchase new equipment which could require additional needs for capital.

We may not be able to contract with clients or customers for marine services or syndicated projects.

During 2010 we recorded approximately $21 million of revenue by chartering vessels, equipment and crew and providing marine services to clients or customers. While the results of these syndicated projects were generally successful, the clients or customers may not be willing or financially able to continue with syndicated projects of this type in the future. Failure to secure such revenue producing contracts in the future would have a material impact on our revenue and operating cash flows.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

We maintain our offices in Tampa, Florida where we purchased a 23,500 square-foot two story office building in 2004 to serve as our corporate and operations headquarters. In May 2008, we purchased a one story 8,100 square-foot commercial building in proximity to our corporate headquarters which is utilized by our conservation, research and archaeology departments. We believe these facilities are sufficient for our foreseeable needs.

ITEM 3. LEGAL PROCEEDINGS

See the information set forth under the heading “Admiralty Legal Proceedings” in Part I, Item 1of this report for disclosure regarding certain admiralty legal proceedings in which Odyssey is involved. Such information is hereby incorporated by reference into this Part I, Item 3.

The Company is not currently a party to any material litigation other than the admiralty proceedings described in this document. From time to time in the ordinary course of business, the Company may be subject to or may assert a variety of claims or lawsuits.

ITEM 4. RESERVED

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PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Performance Graph

This performance graph shall not be deemed “filed” with the SEC or subject to Section 18 of the Exchange Act, nor shall it be deemed incorporated by reference in any of our filings under the Securities Act of 1933, as amended.

Assuming an investment of $100 on December 31, 2005, and reinvestment of all dividends, the graph below compares the cumulative total stockholder return on the Company’s Common Stock for the last five fiscal years with the cumulative return of the Standard & Poor’s 500 Market Index and the Russell 2000 Market Index.

COMPARISON OF FIVE-YEAR TOTAL RETURN AMONG ODYSSEY,

S&P 500 STOCK INDEX AND RUSSELL 2000 STOCK INDEX

Price Range of Common Stock

On November 19, 2003, our common stock was listed on the American Stock Exchange and was traded under the symbol OMR. On July 10, 2007, trading of our common stock moved from the American Stock Exchange to the NASDAQ Capital Market under the symbol OMEX. The following table sets forth the high and low sale prices for our common stock during each quarter presented.

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Approximate Number of Holders of Common Stock

The approximate number of record holders of our common stock at February 14, 2011 was 240. This does not include shareholders that hold their stock in accounts in street name with broker/dealers which approximate another 11,000 holders.

Dividends

Holders of our common stock are entitled to receive such dividends as may be declared by our Board of Directors. No dividends have been declared with respect to our common stock or preferred stock and none are anticipated in the foreseeable future. Holders of our Series G 8% Convertible Preferred Stock accumulate dividends as described in NOTE Q. These dividends are not payable until declared by the Board of Directors.

Unregistered Sales of Equity Securities

There were no unregistered sales of equity securities during the year ended December 31, 2010 that have not been reported in a Current Report on Form 8-K.

Issuer Purchases of Equity Securities

There were no repurchases of shares of the Company’s common stock during the quarter ended December 31, 2010.

ITEM 6. SELECTED FINANCIAL DATA

The following table sets forth selected financial data, which should be read in conjunction with the Company’s Consolidated Financial Statements and the related notes to those statements included in “Item 8. Financial Statements and Supplementary Data” and with “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” appearing elsewhere in this Form 10-K. The selected financial data have been derived from the Company’s audited financial statements.

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis is intended to provide a narrative of our financial results and an evaluation of our financial condition and results of operations. The discussion should be read in conjunction with our consolidated financial statements and notes thereto. A description of our business is discussed in Item 1 of this report which contains an overview of our business as well as the status of our ongoing project operations.

Results of Operations

The dollar values discussed in the following tables, except as otherwise indicated, are approximations to the nearest $100,000 and therefore do not necessarily sum in columns or rows. For more detail refer to the Financial Statements and Supplementary Data in Item 8. The tables identify years 2010, 2009 and 2008, all of which included a twelve-month period fiscal year that ended December 31.

2010 Compared to 2009

Revenue

Revenue is generated through the sale of coins, artifacts and merchandise, the lease of our themed attraction exhibit and expedition charters.

Expedition charter revenue was $20.5 million in 2010 versus $2.1 million in 2009. In 2010, $9.0 million related to our syndicated projects with clients of Robert Fraser Partners LLP (RFP) that included four separate projects (Enigma I and II, Firebrand and Shantaram). Also in 2010, $7.9 million represented charter services sold to Dorado Ocean Resources for deep ocean mineral mining exploration. These two customers represented 82% of our expedition charter revenue in 2010. Other projects for 2010 included the ET 409 aircraft recovery and photomosaic project ($2.9 million) and $.7 million from other charter services. During the fourth quarter 2009 we initiated the first RFP project ($2.0 million) for research, shipwreck search and survey services related to the “Enigma I” project (see Operational Projects, Item 1).

Artifact sales and other revenues primarily include coin sales, but also include other artifacts, merchandise, commissions, and other miscellaneous revenue. Artifact and other revenues for 2010 and 2009 were $.4 million and $1.6 million, respectively. We believe the decrease of $1.2 million in artifact sales and other in 2010 primarily related to overall poor economic conditions and availability of new product offerings. As of December 31, 2010, we had a remaining inventory of approximately 28,500 silver coins. Our artifact and other and exhibit revenue for 2010 and 2009 was predominantly U.S. domestic-based.

Exhibit revenue was $.1 million and $.6 million in 2010 and 2009, respectively. Odyssey’s SHIPWRECK! Pirates & Treasure is an interactive multi-media exhibit and features hundreds of artifacts recovered from our deep-ocean shipwreck expeditions. The decrease of $.5 million in 2010 because Odyssey’s exhibit, SHIPWRECK! Pirates & Treasure, was on tour for four months in 2010 versus eleven months on two separate tours in 2009. The non-booked months in 2010 were related to downtime for planned exhibit refurbishment after runs at five venues and over 600,000 visitors. The exhibit opened at the Maryland Science Center in Baltimore on October 1, 2010 and ran through January 31, 2011. In 2009 the exhibit was featured at two locations (Oklahoma City and Charlotte, North Carolina). Exhibit revenue varied dependent on the type of contract which was either a fixed rental or a per visitor basis. The exhibit is currently booked through August 2012.

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Cost and Expenses

Cost of sales consists of shipwreck recovery costs, grading, conservation, packaging, and shipping costs associated with artifact and merchandise sales. The primary cost component is from the sale of coins. Cost of sales for coins decreased 72% for 2010 versus 2009 primarily because of fewer coins sold in 2010. Actual cost as a percentage of coin sales was 41% and 44% in 2010 and 2009, respectively. There is no cost of sales component associated with the themed attraction and expedition charter revenues.

Operations and research expenses primarily include all costs within Archaeology, Conservation, Research, and Marine Operations, which include all vessel operations. Operations and research expenses were $19.6 million in 2010, compared to $12.6 million in 2009. The $7.0 million increase, or 55%, was primarily related to our two chartered vessels ($8.5 million). The Dorado Discovery vessel comprised $6.0 million of the increase and has completed its charter with Dorado Ocean Resources Ltd. in mid-December after a successful four month charter in the South Pacific (see Operational Projects, Item 1). Our second chartered vessel, which comprised $2.5 million of the increase, was deployed during the second quarter 2010 to work on the “Shantaram” project and then was sub-chartered to a third party in the third quarter and went off-charter in the fourth quarter. The unfavorable charter variances were primarily offset by favorable variances for our two owned vessels, most of which represented the Ocean Alert which has been in port for the latter part of 2010. Our current plans are either to sell or charter the Ocean Alert in 2011.

Marketing, general and administrative expenses primarily include all costs within the following departments: Executive, Finance & Accounting, Legal, Information Technology, Human Resources, Marketing & Communications, Sales and Business Development. Marketing, general and administrative expenses were $9.2 million in 2010 versus $9.4 million in 2009. The decrease was primarily attributable to reduced corporate overhead of $.3 million including professional fees and expenses and depreciation.

Receivable reserves of $8.5 million in 2010 include approximately $1.5 million which related to the sale of research for the “Shantaram” project which has not been received. If not collected, Odyssey has the option to receive an additional percentage up to 11% of the net proceeds assuming the target project is located. The additional reserve of $6.9 million represents the net amount due from DOR for charter services. The DOR reserve does not include $2.0 million of receivables which can be offset against our subscription payable to DOR. At the present time, we cannot determine with certainty as to the amount of cash we may or may not receive from our charter services with DOR of which we have approximately a 41% interest. As discussed in Part I, Item 1- Business, Operational Projects and Status, the DOR expedition with Odyssey achieved outstanding results in the first charter which covered approximately 5% of DOR tenements. Also, with the recent mining license issued to Nautilus Minerals, another mineral exploration company operating in the South Pacific, there has been significant attention being given to this relatively new emerging industry. DOR is in the process of raising the additional capital in order to begin further operations in the initial areas of success. Odyssey has several possibilities for recognizing benefits from the accounts receivable from DOR. We may receive all or only a portion of the receivables in cash. We have the option to convert our non-mobilization portion of the accounts receivable into additional equity of DOR at the last subscription price. If we were to convert the receivables to equity, Odyssey could increase its stake to approximately 49% prior to any future dilution. We can also convert all or a portion of the receivables into a note receivable or debenture which would provide a coupon rate and potentially other enhancements. Due to the lack of clarity on the ultimate form of collection of the DOR receivable, we recorded a $6.9 million receivable reserve against operations. There remains a $2.0 million account receivable from DOR which could be offset against our subscription payable of $2.0 million which is due by April 1, 2013. Had we converted our accounts receivable into equity in DOR, we would have also been required to absorb our ownership percentage of accumulated losses of DOR. Since DOR is in the start-up phase of operations, continued losses would have eventually reduced our long term investment against the income statement as loss from unconsolidated entity. We will retain our ownership interest in DOR and continue to be very optimistic concerning the future potential of this emerging new business. We believe that we may receive the economic benefit of all or a portion of the receivable that relates to the reserve that has been established and will continue to evaluate this asset accordingly in future periods.

Other Income or Expense

Other income and expense generally consists of interest income on investments offset by interest expense on our revolving credit facility and other loans. Beginning in the fourth quarter 2009, it also included the income or loss from our equity investment. Beginning in the fourth quarter 2010 it included the change in fair value of the derivatives related to our issuance of Series G preferred stock and the gain/(loss) on debt extinguishment. Total other expense was $6.9 million in 2010 and $.3 million in 2009. The unfavorable difference of $6.7 million primarily represented the change in fair value of the derivatives related to the Series G Redeemable Preferred Stock ($3.6 million) and loss on our equity investment in Dorado Ocean Resources ($2.4 million) which has been recorded pursuant to Accounting Standards Codifications. See Notes K and Q of our Consolidated Financial Statements for the discussion of the derivative loss and redeemable preferred stock and Note J for our loss on our equity investment. Other items included the loss on debt extinguishment of $.4 million which resulted from our exchange of notes payable for an investment in the Series G preferred stock (see Note Q) and $.5 million for interest expense on our revolving line of credit and other loans.

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Income Taxes

We did not record any provision (benefit) for income taxes in 2010 or 2009. Due to the uncertainty surrounding the realization of deferred tax assets resulting from operating loss carryforwards, we recorded a full valuation allowance of $45.9 million against the deferred tax assets as of December 31, 2010 compared to $39.7 million as of December 31, 2009. As required by the Accounting for Income Taxes topic in the Accounting Standards Codification (“ASC”), we have evaluated whether it is more likely than not that the deferred tax assets will be realized. Based on the available evidence, we have concluded that it is more likely than not that those assets would not be realizable without the recovery of high-value shipwrecks (such as HMS Sussex) or successful admiralty proceedings regarding salvage claims to “Black Swan” high value cargo and thus a valuation allowance has been recorded as of December 31, 2010. We anticipate that we will continue to incur net losses in 2011. Our ability to generate net income in future periods is dependent upon our success in recovering and monetizing high-value shipwrecks and our ability to generate expedition charter revenue. Our current estimates do not include monetizing any assets from the “Black Swan” or HMS Victory projects in 2011. We will continue to reassess the need for a valuation allowance during each future reporting period.

Liquidity and Capital Resources

Discussion of Cash Flows

Net cash used in operating activities in 2010 was $12.2 million. This amount primarily reflected an operating loss of $23.3 million offset in part by non-cash items including depreciation and amortization ($2.2 million), share-based compensation ($2.1 million), loss from unconsolidated entity ($2.4 million), change in fair value of derivatives liabilities due to the issuance of Series G preferred stock ($3.6 million), and loss on extinguishment of debt and loan discount amortization related to the exchange of notes payable for Series G preferred stock ($.5 million). The overall net increase in accounts receivable, net of reserves of $8.5 million, is $1.8 million which primarily represents charter services for DOR (see Item 7. Cost and Expenses discussion). Other working capital changes included an increase in accounts payable and accrued expenses of $2.8 million ($2.1 million represents ship charter-related expenses), and a decrease in deferred revenue of $.5 million (representing cash receipts of $3.7 million offset by revenue recognized of $4.2 million on the “Firebrand,” “Enigma” and “Shantaram” projects). Net cash used in operating activities in 2009 was $12.6 million. This amount primarily reflected an operating loss of $18.6 million offset in part by non-cash items including depreciation and amortization ($2.3 million), share-based compensation ($2.0 million), loss from equity investment ($.1 million), increase in accrued expenses and deferred revenue ($1.4 million) and accounts payable ($.6 million), a decrease in inventory ($.6 million), accounts receivable ($.2 million) and restricted cash ($.1 million) required by our credit facility and building mortgage with Fifth Third Bank.

Cash flows used in investing activities were $1.6 million and $1.6 million for the twelve months in 2010 and 2009, respectively. Cash flows used in investing activities for 2010 of $1.6 million primarily represented marine property and equipment purchases for our business venture into subsea mineral mining and exploration. Cash used in investing activities in 2009 included the purchase of $.8 million of vessel-related property and equipment, $.3 million of capitalized maintenance for major overhaul of the Ocean Alert tail shaft, and $.5 million for our equity investment in SMM Project LLC to pursue opportunities in the exploration of deep-ocean gold and copper deposits.

Cash flows provided by financing activities in 2010 were $11.9 million which included $6.2 million proceeds from the issuance and sale of common stock in January 2010 offset by fees related to the private offering of $.2 million, $1.8 million proceeds from the issuance of promissory notes in August 2010 (of which $1.0 million was exchanged for Series G preferred stock in October 2010), $5.1 million in proceeds from the sale of Series G preferred stock in October 2010, and repayment of $1.0 million of mortgage and loans payable ($.9 million of which related to the repayment of the promissory notes in October 2010). Cash flows provided by financing activities for 2009 were $5.7 million which primarily included $5.9 million from the issuance of common stock and exercise of warrants offset by loan repayments of $.2 million.

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General Discussion 2010

At December 31, 2010, we had cash and cash equivalents of $.2 million, a decrease of $1.9 million from the December 31, 2009 balance of $2.1 million.

Equity-Related

During January 2010, we entered into individual purchase agreements with certain investors pursuant to which we sold an aggregate of 4,000,000 shares of Odyssey’s common stock and warrants to purchase up to 2,400,000 shares of common stock to such investors. The common stock and warrants were sold as units, with each unit consisting of one share of common stock and a warrant to purchase 0.6 shares of common stock. The purchase price for each unit was $1.565. The warrants have an exercise price of $2.25 per share of common stock and are exercisable in accordance with their terms at any time on or before the close of business on January 29, 2013. The net proceeds to us from the registered direct public offering, after deducting placement agent fees and its offering expenses, and excluding the proceeds from the exercise of the warrants issued in the offering, were $6.1 million.

On February 12, 2010, we issued 500,000 shares of common stock to one institutional investor. The shares of common stock were issued upon conversion of 500,000 outstanding shares of our Series D Convertible Preferred Stock that were originally purchased in January 2007.

On March 18, 2010, we issued 600,000 shares of common stock to one institutional investor. The shares of common stock were issued upon conversion of 600,000 outstanding shares of the Odyssey’s Series D Convertible Preferred Stock that were originally purchased in May 2007.

On April 20, 2010, we issued 600,000 shares of common stock to one institutional investor. The shares of common stock were issued upon conversion of 600,000 outstanding shares of the Company’s Series D Convertible Preferred Stock that were originally purchased in May 2007.

On April 30, 2010, SMM Project LLC was acquired by Dorado Ocean Resources Ltd (DOR) through a stock exchange agreement. We were issued 450 DOR shares in exchange for our surrendered shares in SMM. Additionally, we invested $2 million dollars for 1,200 shares of DOR resulting in a 41.25% ownership of DOR. Under the terms of the Share Subscription Agreement, we have the option to pay for this investment in cash or by providing marine services to DOR over a three-year period.

On May 6, 2010, we issued 1,300,000 shares of common stock to one institutional investor. The shares of common stock were issued upon conversion of 13 outstanding shares of the Odyssey’s Series E Convertible Preferred Stock that were originally purchased in September 2007. The Series E Convertible Preferred Stock was convertible into 100,000 shares common for every one share of preferred. As a result of the conversion, there are no longer any shares of Series E Convertible Preferred Stock outstanding.

On June 3, 2010, shareholders approved the proposal at the annual meeting to amend the 2005 Incentive Stock Plan by adding 3,000,000 shares of common stock to the Plan. An S-8 Registration was filed in August 2010 for the additional shares.

On August 20, 2010, we entered into individual purchase agreements with certain investors to issue and sell promissory notes in the principal amount of $1.8 million and warrants to purchase an aggregate of 270,000 shares of common stock. The notes bear interest at a rate equal to 5.0% per annum, and all principal and accrued interest was due and payable on or before December 18, 2010. The warrants had an exercise price of $2.25 per share of common stock and will be exercisable in accordance with their terms at any time on or before the close of business on August 20, 2013. All the notes were paid in full as of October 18, 2010.

On October 6, 2010, we entered into separate purchase agreements with certain investors to sell 24 shares of Series G 8% Convertible Preferred Stock, par value $0.0001 per share, and warrants to purchase up to 1,800,000 shares of Odyssey’s common stock to such investors. The Series G Preferred stock and warrants were offered as units, with each unit consisting of one share of Preferred Stock and a Warrant to purchase 75,000 shares of common stock. The purchase price for each unit was $250,000. The transaction closed on October 12, 2010, and we sold 20 of the units for cash, and four of the units were issued upon tender of an aggregate of $1.0 million of principal amount of the promissory notes that Odyssey issued in August 2010 by the holders thereof. Accordingly, the net cash proceeds to Odyssey were approximately $5.0 million. See NOTE Q to the Consolidated Financial Statements for further information and the planned accounting for this transaction.

Other Areas

Beginning in late 2009, 2010 and so far in 2011, Odyssey has executed six agreements with clients of Robert Fraser & Partners LLP (RFP) for four shipwreck search projects code named “Firebrand”, “Shantaram” and “Enigma I and II,” and two other follow-up/verification agreements on the projects. These agreements total approximately $14 million for which we have received approximately $12.3 million. We are planning additional projects with RFP in 2011 focusing on mineral exploration (see Operational Projects, Item1.).

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In February 2011, Odyssey closed on a project syndication deal with Galt Resources LLC. Odyssey has received approximately $5.6 million from Galt which represent rights to future revenues of the project Galt selects prior to December 31, 2011. If the project is successful, Galt will recoup their investment plus three times the investment. These amounts will be paid out of proceeds of the project. Galt will receive 50% of the proceeds until this amount is recouped. In addition they will share in the future net proceeds of the project at the rate of 1% for every million invested. The agreement allows Galt to select only one project, and Galt will be allowed to invest up to $10 million total with the permission of Odyssey.

During February 2011, Odyssey entered into a charter agreement with Neptune Minerals PLC (a UK Company) and Neptune Minerals, Inc. (a Nevada Corp.) and Neptune Resources Ltd. (a New Zealand Company) for the Dorado Discovery to supply geological exploration services to Neptune Minerals to explore their tenements in the waters surrounding New Zealand in the first half of 2011. Odyssey expects to receive a minimum of $3 million in cash for the charter services.

Bank Credit Facility

On April 23, 2010, we renewed our $5.0 million revolving credit facility with Fifth Third Bank (the “Bank”). The renewed credit facility has a floating interest rate equal to the “Prime Rate” plus one hundred and fifty basis points (1.50%), requires monthly payments of interest only, and is due in full April 23, 2011. The Company will also be required to pay the Bank an unused line fee equal to 0.50% per annum of the unused portion of the credit line.

The line of credit is secured by approximately 28,500 numismatic coins recovered from the SS Republic shipwreck, which amount will be reduced over the term by the amount of coins sold by the Company. The coins used as collateral are held by a custodian for the security of the Bank. The borrowing base is equal to forty percent (40%) of the eligible coin inventory valued on a rolling twelve-month wholesale average value. The Company is required to comply with a number of customary covenants. At December 31, 2010, the credit line was fully extended. We are currently in negotiations with the Bank to extend the line of credit.

Trends and Uncertainties

Our current 2011 business plan estimates positive cash flow from operation activities, which assumes several of our planned projects are financed through project syndications or other partnership opportunities. One or more of these projected project financing or partnership opportunities may not be realized which may require the need for additional cash. We are also estimating capital expenditure needs of approximately $3.5 million primarily related to specialized equipment necessary for several of our upcoming projects. Based upon our current expectations, we believe our cash position will be sufficient to fund operating cash flows throughout the rest of 2011 taking into account our current cash flow expectations and expected revenues from multiple sources, including projected sales, syndicated projects and potential financing opportunities. Based upon current discussions with Fifth Third Bank, we expect to renew or extend our existing credit facility before termination in April 2011. However, we cannot be assured of our ability to do so and may need to seek additional capital in 2011 to pay off our existing balance. We have experienced several years of net losses resulting in a stockholders’ deficit. Our capacity to generate net income in future periods is dependent upon our success in recovering and monetizing high-value shipwrecks, or to generate income from other projects. While we have recovered more than 17 tons of silver coins and hundreds of gold coins and other artifacts from the “Black Swan” project, we will not have the ability to immediately monetize any recovered cargo unless we are awarded title or a salvage award by the U.S. District Court or negotiate a settlement with other claimants in the case. At the present time, we cannot determine how long that process may take. We have also identified one of our potential high value target shipwrecks, HMS Victory, and at least one of our Robert Fraser shipwreck targets. We may not be able to begin recovery operations on projects as planned or monetize any potential cargo in the short term. If cash flow is not sufficient to meet our projected business plan requirements, we will be required to raise additional capital or curtail expenses. While we have been successful in raising the necessary funds in the past, there can be no assurance that we can continue to do so.

2009 Compared to 2008

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Revenue

In the fourth quarter 2009, expedition charter revenue included compensation to provide project research and shipwreck search and survey services to client companies of Robert Fraser & Partners LLP (RFP) located in the United Kingdom. In 2008, expedition charter revenue included revenue associated with the production of the shipwreck exploration television series Treasure Quest.

Artifact and other revenues for 2009 and 2008 were $1.6 million and $1.7 million, respectively. In 2009 we sold nearly 2,400 silver coins, a 35% increase over 2008. The decrease of $.1 million in artifact sales and other in 2009 primarily related to higher 2008 other revenue which included $.3 million representing the sale of customer lists to our direct marketing partner. In 2009 and 2008, we sold through several independent dealers of which two represented 72% and 69% of total artifact sales, respectively. As of December 31, 2009, we had a remaining inventory of approximately 29,000 silver coins. Our artifact and other and exhibit revenue for 2009 and 2008 was predominantly U.S. domestic-based.

Exhibit revenue was $.6 million and $.5 million in 2009 and 2008, respectively. Odyssey’s SHIPWRECK! Pirates & Treasure is an interactive multi-media exhibit and features hundreds of artifacts recovered from our deep-ocean shipwreck expeditions. In 2009 the exhibit was featured at two locations (Oklahoma City and Charlotte, North Carolina) and three locations in 2008 (Tampa, Detroit and Oklahoma City). Exhibit revenue varied dependent on the type of contract which was either a fixed rental or a per visitor basis.

Expedition charter revenue for fourth quarter 2009 included $.8 million for the sale of research and $1.2 million for shipwreck search and survey services related to the RFP “Enigma” project (see Operational Projects, Item 1). In 2008, expedition charter revenue included $1.9 million of expedition charter revenue related to the television series Treasure Quest.

Cost and Expenses

The primary cost component is from the sale of coins. Cost of sales for coins increased 38% for 2009 versus 2008 primarily because of more coins sold in 2009. However, overall cost of sales increased only 8% due to other miscellaneous charges in 2008. Actual cost as a percentage of coin sales was 44% and 40% in 2009 and 2008, respectively. There is no cost of sales component associated with the themed attraction and expedition charter revenues.

Operations and research expenses were $12.6 million in 2009, compared to $18.6 million in 2008. The $6.0 million decrease, or 32%, was primarily related to a $3.0 million decrease in vessel operating expenses of which $2.4 million related to fewer ship charters utilized in 2009 (which were used in 2008 to supplement our operating schedule in the “Atlas” search area while the Ocean Alert was undergoing repairs), and $.6 million related to other vessel operating expenses primarily fuel, port fees, consumables and provisions. We also had a decrease of $2.5 million in vessel repairs and maintenance expenses due to extensive repairs to both ships in 2008. The remaining decrease in operations and research expenses in 2009 of $.5 million was attributed to lower vessel miscellaneous operating expenses.

Marketing, general and administrative expenses were $9.4 million in 2009 versus $9.8 million in 2008. The decrease of $.4 million was primarily attributable to reduced corporate overhead of $.7 million including professional fees and expenses and depreciation, offset by $.3 million of unfavorable employee-related expenses including share-based compensation and bonuses.

Other Income or Expense

Other income and expense generally consists of interest income on investments offset by interest expense on our revolving credit facility and equipment loans. Beginning in the fourth quarter 2009, it also included the income or loss from our equity investment. Total other expense was $.3 million in 2009 and other income was $.1 million in 2008. The unfavorable difference of $.4 million represented less interest income in 2009 from short-term investments ($.2 million), additional interest expense on our corporate credit facility ($.1 million) and the loss on our equity investment in 2009 ($.1 million).

Income Taxes

We did not record any provision (benefit) for income taxes in 2009 or 2008. Due to the uncertainty surrounding the realization of deferred tax assets resulting from operating loss carryforwards, we recorded a full valuation allowance of $39.7 million against the deferred tax assets as of December 31, 2009 compared to $33.2 million as of December 31, 2008. As required by the Accounting for Income Taxes topic in the Accounting Standards Codification (“ASC”), we have evaluated whether it is more likely than not that the deferred tax assets will be realized. Based on the available evidence, we have concluded that it is more likely than not that those assets would not be realizable without the recovery of high-value shipwrecks (such as HMS Sussex) or successful admiralty proceedings regarding salvage claims to “Black Swan” high value cargo and thus a valuation allowance has been recorded as of December 31, 2009. Our ability to generate net income in future periods is dependent upon our success in recovering and monetizing high-value shipwrecks and our ability to generate expedition charter revenue. We will continue to reassess the need for a valuation allowance during each future reporting period.

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Liquidity and Capital Resources

Discussion of Cash Flows

Net cash used in operating activities in 2009 was $12.6 million. This amount primarily reflected an operating loss of $18.6 million offset in part by non-cash items including depreciation and amortization ($2.3 million), share-based compensation ($2.0 million), loss from equity investment ($.1 million), increase in accrued expenses ($1.4 million) and accounts payable ($.6 million), a decrease in inventory ($.6 million), accounts receivable ($.2 million) and restricted cash ($.1 million) required by our credit facility and building mortgage with Fifth Third Bank. Net cash used in operating activities in 2008 was $21.4 million. This amount primarily reflected an operating loss of $24.8 million offset in part by non-cash items including depreciation and amortization ($2.6 million) and share based compensation ($1.8 million), a decrease in accrued expenses ($1.4 million) and inventory ($.6 million) and an increase in restricted cash ($.8 million) required by our credit facility and building mortgage with Fifth Third Bank.

Cash flows used in investing activities were $1.6 million and $1.4 million for the twelve months in 2009 and 2008, respectively. Cash used in investing activities in 2009 included the purchase of $.8 million of vessel-related property and equipment, $.3 million of capitalized maintenance for major overhaul of the Ocean Alert tail shaft, and $.5 million for our equity investment in SMM Project LLC to pursue opportunities in the exploration of deep-ocean gold and copper deposits. Cash used in investing activities in 2008 primarily reflected purchase of property and equipment, which included capitalized maintenance for major engine repairs and upgrades to the Ocean Alert ($.5 million), the purchase of a building (used primarily as a conservation lab and storage facility) for $1.0 million of which we financed $.8 million (net $.2 million), and $.6 million for property and equipment primarily vessel-related.

Cash flows provided by financing activities for 2009 were $5.7 million which primarily included $5.9 million from the issuance of common stock and exercise of warrants offset by loan repayments of $.2 million. Cash flows provided by financing activities for 2008 were $15.2 million which included $10.8 million from the issuance of common stock and exercise of warrants, $10.0 million from loan proceeds which included $7.5 million from our bank credit facility and $2.5 million from refinancing our corporate office building with Fifth Third Bank, offset by loan repayments of $5.6 million which included $2.5 million repayment on our bank credit facility and $3.1 million for a prior mortgage and equipment loan.

General Discussion 2009

At December 31, 2009, we had cash and cash equivalents of $2.1 million, a decrease of $8.6 million from the December 31, 2008 balance of $10.7 million.

Equity-Related

On January 23, 2009, we received $.8 million from the exercise of warrants to purchase 197,600 shares of Series D Convertible Preferred stock at a price of $4.00 per share. On January 28, 2009, we issued 250,000 shares of common stock to one accredited investor upon conversion of 250,000 shares of Series D Convertible Preferred Stock.

On May 22, 2009, we issued and sold 1,720,000 shares of common stock at a price of $2.965 per share, for an aggregate purchase price of $5,100,000 in cash, pursuant to a Common Stock Purchase Agreement between the Company and three funds managed by two accredited investors. During the three-month period ended June 30, 2009, we issued 4,241,200 shares of common stock to two accredited investors upon conversion of 4,241,200 shares of Series D Convertible Preferred Stock.

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On October 1, 2009, we issued 700,000 shares of common stock to one institutional investor upon conversion of 700,000 outstanding shares of the Series D Convertible Preferred stock. On November 6, 2009, we filed a shelf registration statement with the SEC which was declared effective by the SEC on November 20, 2010. The shelf registration enables us to sell common stock, preferred stock, debt securities, and/or warrants in one or more offerings up to a total dollar amount of $50,000,000.

In November 2009, we invested $500,000 for a 25% interest in SMM Project, LLC (“SMM”) to pursue opportunities in the exploration of deep-ocean gold and copper deposits. SMM purchased a majority interest in Bluewater Metals Pty, Ltd. (“Bluewater”), an Australian company with licenses for mineral exploration of approximately 150,000 square kilometers of ocean floor in territorial waters controlled by four different countries in the South Pacific. The focus will be on the exploration and monetization of gold, silver, zinc and copper-rich Seafloor Massive Sulfide (SMS) deposits through a new business entity, Dorado Ocean Resources (DOR), which has acquired the remaining interest in Bluewater. Odyssey dedicated certain marine assets, including a ship and related marine exploration technology, to the endeavor. For the year ended December 31, 2009, SMM incurred a loss of $210,116 of which $52,529 is allocable to us. This amount is shown in the income statement in Income (loss) from unconsolidated entity.

Robert Fraser Marine Ltd Projects

In November 2009, we entered into agreements to provide project research and shipwreck search and survey services for a project code-named “Enigma” to client companies of RFP. Under the agreements, Odyssey furnished research related to the “Enigma” and its sinking and provided a research vessel, equipment and crew to search a specified area and inspect targets in that area. The contracts provided initial cash payments totaling £2.1 million (approximately $3.5 million) to Odyssey as well as additional payments upon the sale of coins or artifacts from the “Enigma” project.

Off Balance Sheet Arrangements

We do not engage in off-balance sheet financing arrangements. In particular, we do not have any interest in so-called limited purpose entities, which include special purpose entities (SPEs) and structured finance entities.

Indemnification Provisions

Under our bylaws and certain consulting agreements, we have agreed to indemnify our officers and directors for certain events arising as a result of the officer’s or director’s serving in such capacity. Separate agreements may provide indemnification after term of service. John C. Morris, a former officer and director, has indemnification extended during the term of his consulting agreement. The term of the indemnification agreement is as long as the officer or director remains in the employment of the company. The maximum potential amount of future payments we could be required to make under these indemnification agreements is unlimited. However, our director and officer liability insurance policy limits its exposure and enables us to recover a portion of any future amounts paid. As a result of our insurance policy coverage, we believe the estimated fair value of these indemnification agreements is minimal and no liabilities are recorded for these agreements as of December 31, 2010.

Critical Accounting Estimates

The discussion and analysis of our financial position and results of operations is based upon our financial statements, which have been prepared in accordance with accounting principles generally accepted in the U.S. The preparation of these financial statements requires us to make estimates and judgments that affect our financial position and results of operations. See Note A to the Consolidated Financial Statements for a description of our significant accounting policies. Critical accounting estimates are defined as those that are reflective of significant judgment and uncertainties, and potentially result in materially different results under different assumptions and conditions. We have identified the following critical accounting estimates. We have discussed the development, selection and disclosure of these policies with our audit committee.

Long-Lived Assets

As of December 31, 2010, we had approximately $8.3 million of property and equipment and related assets. Our policy is to recognize impairment losses relating to long-lived assets in accordance with the ASC topic for Property, Plant and Equipment. Impairment decisions are based on several factors, including, but not limited to, management’s plans for future operations, recent operating results and projected cash flows.

Realizability of Deferred Tax Assets

We have recorded a net deferred tax asset of $0 at December 31, 2010. As required by the Accounting for Income Taxes topic in the ASC, we have evaluated whether it is more likely than not that the deferred tax assets will be realized. Based on the available evidence, we have concluded that it is more likely than not that those assets would not be realizable without the recovery and rights of ownership or salvage rights of high value shipwrecks and thus a valuation allowance of $46.0 million has been recorded as of December 31, 2010. While we have recovered more than 17 tons of silver and hundreds of gold coins and other artifacts from the Black Swan project, we do not have the ability to monetize the recovered cargo unless we are awarded title or a salvage award by the U.S. District Court or enter into a negotiated agreement with other claimants in the case.

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Artifact Inventory

The value of recovered artifacts in inventory includes the costs of recovery and conservation. The capitalized costs include direct costs of recovery such as vessel and related equipment operations and maintenance, crew and technical labor, fuel, provisions, supplies, port fees, depreciation and may even include fees paid to an insurer to relinquish the insurer’s claim to the recovered artifacts. Conservation costs include fees paid to conservators for cleaning and preserving the artifacts. We continually monitor the recorded aggregate costs of the artifacts in inventory to ensure these costs do not exceed the net realizable value. We use historical sales, publications or available public market data to assess market value.

Allowance for Doubtful Accounts

In determining the collectability of our accounts receivable, we need to make certain assumptions and estimates. Specifically, we may examine accounts and assess the likelihood of collection of particular accounts.

Derivative Financial Instruments

In evaluating fair value of derivative financial instruments, there are numerous assumptions which management must make that may influence the valuation of the derivatives as included in the financial statements.

Contractual Obligations

At December 31, 2010, the Company’s contractual obligations including estimated payments due by period are as follows:

Long-term debt represents the amount due on our existing mortgages. The operating lease represents our vessel charter. The vessel charter has a lease period is March 2010 to February 2013 as well as a ninety-day termination notice clause.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk is the exposure to loss resulting from changes in interest rates, foreign currency exchange rates, commodity prices and equity prices. We do not believe we have material market risk exposure and have not entered into any market risk sensitive instruments to mitigate these risks or for trading or speculative purposes.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The information required by this item appears beginning on page 29.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

We maintain a set of disclosure controls and procedures designed to ensure that information we are required to disclose in reports that we file with or furnish to the SEC is recorded, processed, summarized and reported within the time periods specified by the SEC. An evaluation was carried out under the supervision and with the participation of the Company’s management, including the Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, the CEO and CFO have concluded that the Company’s disclosure controls and procedures are effective to ensure that we are able to collect, process and disclose the information we are required to disclose in the reports we file with the SEC within required time periods.

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Internal Controls over Financial Reporting

Management’s report on our internal controls over financial reporting can be found in the financial statement section of this report. The Independent Registered Public Accounting Firm’s attestation report on management’s assessment of the effectiveness of our internal control over financial reporting can also be found in the financial statement section of this report.

There have been no significant changes in the Company’s internal controls over financial reporting during the quarter ended December 31, 2010 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information concerning Directors and Executive Officers is hereby incorporated by reference to the information under the headings “Election of Directors” and “Executive Officers and Directors of the Company” in the Company’s Proxy Statement (the “Proxy Statement”) for the Annual Meeting of Stockholder to be held on June 1, 2011.

The Company has adopted a Code of Ethics that applies to all of its employees, including the principal executive officer, the principal financial officer and the principal accounting officer. The Code of Ethics and all committee charters are posted on the Company’s website (www.shipwreck.net). We will provide a copy of any of these documents to stockholders free of charge upon request to the Company.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this Item is hereby incorporated by reference to the information under the heading “Executive Compensation” in the Proxy Statement.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

A portion of the information required by this Item pursuant to Item 403 of Regulation S-K is hereby incorporated by reference to the information under the heading “ Security Ownership of Certain Beneficial Owners and Management” in the Proxy Statement.

The information required pursuant to Item 201(d) of Regulation S-K is hereby incorporated by reference to the information under the heading “Equity Compensation Plan Information” in the Proxy Statement.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this Item is hereby incorporated by reference to the information under the heading “Certain Relationships and Related Transactions” in the Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this Item is hereby incorporated by reference to the information under the heading “Independent Auditor Fees” in the Proxy Statement.

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PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

The following documents are filed as part of this Annual Report on Form 10-K:

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INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

ODYSSEY MARINE EXPLORATION, INC.

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MANAGEMENT’S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

The Company’s management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company. With the participation of the Chief Executive Officer and the Chief Financial Officer, management conducted an evaluation of the effectiveness of internal control over financial reporting based on the framework and the criteria established in Internal Control – Integrated Framework, issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this evaluation, management has concluded that internal control over financial reporting was effective as of December 31, 2010.

The Company’s independent auditor, Ferlita, Walsh & Gonzalez, P.A., a registered public accounting firm, has issued an attestation report on management’s assessment of internal control over financial reporting, which is included herein.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors

Odyssey Marine Exploration, Inc. and Subsidiaries

We have audited the accompanying consolidated balance sheets of Odyssey Marine Exploration, Inc. and subsidiaries as of December 31, 2010 and 2009, and the related consolidated statements of operations, changes in stockholders’ equity/(deficit) and cash flows for each of the years in the three-year period ended December 31, 2010, 2009, and 2008. Odyssey Marine Exploration, Inc. and subsidiaries’ management is responsible for these consolidated financial statements. Our responsibility is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the consolidated financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Odyssey Marine Exploration, Inc. and subsidiaries as of December 31, 2010 and 2009, and the results of their operations and their cash flows for each of the years in the three-year period ended December 31, 2010, 2009 and 2008, in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Odyssey Marine Exploration, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2010, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 24, 2011 expressed an unqualified opinion on its internal control over financial reporting.

February 24, 2011

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ON

INTERNAL CONTROL OVER FINANCIAL REPORTING

The Board of Directors

Odyssey Marine Exploration, Inc. and Subsidiaries

We have audited Odyssey Marine Exploration, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2010, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Odyssey Marine Exploration, Inc. and subsidiaries’ management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on Odyssey Marine Exploration, Inc. and subsidiaries’ internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that degree of compliance with the policies or procedures may deteriorate.

In our opinion, Odyssey Marine Exploration, Inc. and subsidiaries maintained, in all material respects, effective internal control over financial reporting as of December 31, 2010, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Odyssey Marine Exploration and subsidiaries as of December 31, 2010 and 2009, and the related consolidated statements of operations, changes in stockholders’ equity/(deficit) and cash flows for each of the years in the three-year period ended December 31, 2010, 2009 and 2008, and our report dated February 24, 2011 expressed an unqualified opinion.

February 24, 2011

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ODYSSEY MARINE EXPLORATION, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

The accompanying notes are an integral part of these financial statements.

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ODYSSEY MARINE EXPLORATION, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

The accompanying notes are an integral part of these financial statements.

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ODYSSEY MARINE EXPLORATION, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY / (DEFICIT)