Odyssey Marine Exploration Files Amended Registration Statement

Note: Odyssey Marine Exploration now trades on the NASDAQ® Stock Market under the symbol OMEX.

Odyssey Marine Exploration Files Amended Registration Statement

Tampa, FL - September 13, 2005 - Odyssey Marine Exploration (AMEX: OMR), a leader in the field of deep-ocean shipwreck exploration, announced today the Company filed an amendment to its S-3 registration statement, originally filed on March 29, 2005.

Today's amended filing does not register any new shares beyond those sought-to-be registered in the March 2005 S-3 filing. Today's filing has been updated to include information such as the status of the Company's new shipwreck attraction in New Orleans, current common stock outstanding, as well as incorporated information from the latest Form 10-Q filing for the quarter ended June 30, 2005.

For more information, please review the newly amended S-3 registration statement currently accessible through the Company's corporate website - shipwreck.net - or the SEC's public filings website.

About Odyssey Marine Exploration

Odyssey Marine Exploration is an American Stock Exchange Company (Ticker symbol: OMR) with several shipwreck projects in various stages of development throughout the world including the "Atlas" and Sussex projects. Additional information about Odyssey, its projects and equipment is available at shipwreck.net.

For more information, please contact John McNeilly, manager of corporate communications, at 813-876-1776 (ext. 2553).

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The Company believes the information set forth in this Press Release may include "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933 and Section 21E of the Securities Act of 1934. Certain factors that could cause results to differ materially from those projected in the forward-looking statements are set forth in "Risk Factors," and "Business" in the Company's annual report on Form 10KSB/A for the year ended December 31, 2004, which has been filed with the Securities and Exchange Commission.