



Researchers in Shenzhen calculated that fully restoring the world's oyster reefs, over 80% of which have been degraded or destroyed by pollution, overharvesting, and climate change, could generate roughly $12 trillion a year in combined ecological and economic value. The figure, dubbed 'Gross Ecosystem Product' or 'ecopotential,' bundles water filtration, carbon capture, and shoreline stabilization together with straightforward seafood trade revenue.
The United States alone could see $25 billion annually from fully restored reefs, the study found, with nine other countries including China, Australia, and Japan identified as additional hotspots. Currently reefs occupy just 10% of the roughly 114,000 square miles of suitable habitat worldwide.
The researchers acknowledge that 90% of suitable sites would need full restoration and 80% would require ongoing protection to get there, and that climate change itself is expected to shrink the total ecopotential over time. Effective solutions, they note, require pollution management and reduced human pressure across entire watersheds, not isolated reef projects.
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