Two Odyssey Marine Exploration Autonomous Benthic Mini Landers Successfully Deployed in the Cook Islands' EEZ

Odyssey Marine Exploration, Inc. (NASDAQ:OMEX), an ocean exploration leader engaged in critical mineral resource development, today announced the successful deployment of its two Autonomous Benthic Mini Landers (ABML) in the Cook Islands' exclusive economic zone (EEZ). This milestone marks the first deep-sea deployment of custom systems engineered by Develogic GmbH for Odyssey.

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Odyssey Marine Exploration successfully deployed two Autonomous Benthic Mini Landers (ABML) in the Cook Islands' Exclusive Economic Zone. The systems, engineered by Develogic GmbH for Odyssey, will collect in situ environmental data from ~4,900 meters depth to build long-term datasets supporting the Cook Islands Seabed Minerals Authority's scientific and environmental management programs.

The ABMLs will collect in situ environmental data to help build long-term datasets on benthic ecosystems in the region. An array of sensors will continuously collect data critical to understanding the seafloor environment. These sensors will measure turbidity, conductivity, oxygen, temperature, sound, and pressure. The systems will remain on the seafloor at around 4,900 meters before recovery in 2026. All data will be shared with the Cook Islands SBMA (Seabed Minerals Authority) and placed in the public domain. This will support the SBMA's ongoing work to understand the environment of the Cook Islands' seabed mineral resources.

"The successful ABML launches represent a tangible step forward—government, science, and industry working together to produce open, high-quality data to support sound decision making for ocean resources," said Mark Gordon, Chairman and CEO of Odyssey Marine Exploration. "The Cook Islands have prioritized responsible management of one of the world's largest polymetallic nodule resources. Drawing on decades of subsea experience, Odyssey brings a proven, proprietary approach—combining advanced data methods with purpose-built technology."

Hans Smit, CEO of Moana Minerals, Ltd., a subsidiary of Ocean Minerals, LLC (OML), said, "We are pleased to see the growth in ocean research and to be collaborating with Odyssey on the ABML program in the Pacific, particularly within the Cook Islands. Each expedition enhances our collective knowledge of Marae Moana's deep-sea environment. It also supports informed stewardship that maintains a balance between ecological protection and opportunities benefiting Cook Islanders."

The systems were successfully deployed on October 7, 2025, from a research vessel working nearby. Representatives of the SBMA and the Cook Islands National Environment Service sailed alongside international scientists. Recovery is planned for early 2026 by the RV Anuanua Moana, operated by Kiva Marine Ltd., a subsidiary of OML.

In addition to the ABML program, Odyssey is invested in two Cook Islands seabed minerals exploration license holders, CIC and OML (whose subsidiary Moana Minerals holds a license), aligning our research investments with long-term value creation for Cook Islanders and partners.

About Odyssey Marine Exploration

Odyssey Marine Exploration, Inc. (NASDAQ:OMEX) is a global leader in ocean exploration with over 30 years of experience. The company is committed to the sustainable and responsible discovery, validation, and advancement of seafloor critical mineral projects. Its diversified portfolio spans subsea phosphate deposits for fertilizers and polymetallic nodules for battery metals—addressing global priorities from food security to energy and technology innovation. Offering comprehensive research, marine operations, and regulatory compliance support, Odyssey works with governments and seafloor rights holders worldwide. Odyssey develops its projects in collaboration with a global network of partners, academics, and industry professionals who share its commitment to environmentally sound solutions for obtaining minerals that address present and future global challenges. Learn more at www.odysseymarine.com.

Forward Looking Information

Odyssey Marine Exploration 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" in Part I, Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2024, which was filed with the Securities and Exchange Commission on March 31, 2025. The financial and operating projections as well as estimates of mining assets are based solely on the assumptions developed by Odyssey that it believes are reasonable based upon information available to Odyssey as of the date of this release. All projections and estimates are subject to material uncertainties and should not be viewed as a prediction or an assurance of actual future performance. The validity and accuracy of Odyssey's projections will depend upon unpredictable future events, many of which are beyond Odyssey's control and, accordingly, no assurance can be given that Odyssey's assumptions will prove true or that its projected results will be achieved.

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Liz Shows

Odyssey Marine Exploration, Inc.

(813) 876-1776

[email protected]