Protecting coral reefs in the high seas

Rising temperatures and harmful practices are pushing coral reefs toward collapse. But when pressures are reduced, these vibrant ecosystems can recover.

25%

of ocean life is supported by coral reefs

90%

of coral reefs could be lost within 30 years without urgent action

Underwater view of a coral reef with plate-like coral formations and small fish swimming in deep blue water.
History
Governance
Advisory
Values
History

Convened by ocean champions

The Coral Reefs of the High Seas Coalition was founded in 2019 by experts in ocean science, policy, law, and communications. As the High Seas Treaty advanced, they came together to identify the most critical high seas biodiversity hotspots for protection - focusing on the often overlooked coral reefs of the mesopelagic ‘twilight’ zone.

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Governance

Stronger together

The Coral Reefs of the High Seas Coalition is directed by Conservation International. Planning teams contribute to strategy, while working groups lead conservation action at prioritized high seas sites. The broader membership supports and participates in these efforts, with all members committing to the Coalition Charter.

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Advisors and supporters

Guided by visionaries

The Coral Reefs of the High Seas Coalition was founded by leading ocean experts, including Sylvia Earle, Kristina Gjerde, Daniel Wagner, and Aulani Wilhelm, who continue to advise our work.
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We are grateful to the Paul M. Angell Family Foundation, Tom and Currie Barron, Alan Eustace, Bloomberg Ocean Fund, the Tiffany & Co. Foundation, and the Blue Nature Alliance for their generous support of our work.

Five women standing indoors in front of a large map showing countries' exclusive economic zones and seamounts.
Values

What we stand for

Optimism: We are passionate about a healthy ocean and confident that, with our members and partners, we can establish the first generation of high-seas marine protected areas that ensure connectivity and resilience.
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Teamwork: We are stronger together. Through shared, coordinated pathways, we can protect and manage exceptional high seas sites.
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Transparency: We communicate openly, showing how we work with governments and communities to protect the high seas.

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How we work

The Coalition brings together scientists, decision-makers and communities to protect coral reefs in the high seas.

Person using tweezers to handle a translucent starfish in a shallow black tray of water.

Science

We study high seas coral reefs to better understand how they function, what lives on them, and why they matter. By building on existing research and carrying out new expeditions using cutting-edge technologies, we generate the science needed to protect these fragile ecosystems.

Silhouette of a person inside a ship's bridge looking out over the ocean during sunset, with a navigation screen displaying a map.

Policy

We turn science into protection. The Coalition engages with Regional Fisheries Management Organizations (RFMOs) and through the UN High Seas (BBNJ) process to advance lasting safeguards for coral reefs.

Three people wearing safety gear examine a liquid sample in a plastic container inside a laboratory or industrial setting.

Community engagement

We build momentum for change by working with communities, regional partners, and ocean leaders. By sharing knowledge, centering regional perspectives, and fostering collaboration, we help drive inclusive action.