Understanding Ocean Acidification in the Caribbean
The rich biodiversity of U.S. Caribbean waters makes this region one of exceptional ecological and socioeconomic importance. However, increasing ocean and coastal acidification is threatening ecosystem health and the vital services these environments provide. Cari-CAN improves awareness of ocean acidification and collaboration to drive informed actions that support adaptation and mitigation in the face of this growing threat.
What Happens When Oceans Change
The acidity of Caribbean waters is increasing as carbon dioxide from the atmosphere enters the sea. This chemical shift alters the balance that marine life depends on to survive and thrive.
Coastal Marine Ecosystems Face Multiple Stressors
The U.S. Caribbean hosts diverse coastal ecosystems, such as coral reefs, seagrass meadows, and mangroves, that are essential for fisheries, recreation, and coastal protection. These have been severely threatened by natural and human-caused disturbances, including storm events, urban runoff, heat waves, Sargassum inundations and ocean acidification.
Impacts of Ocean and Coastal Acidification in the U.S. Caribbean
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Weaker Coral Reefs
Ocean acidification weakens coral skeletons and the natural “cement” that holds reefs together, making them more fragile and easier to break down. This leaves coastlines more exposed to waves and storm surge.
Vulnerable Shellfish
Higher acidity reduces the ability of conch, lobster, and other shellfish to build strong shells and increases juvenile mortality and predation.
Changes to Food Webs
Changes in plankton growth and composition can alter the entire marine food web.
Fisheries at Risk
Dissolving reefs, declines in shellfish, and disruptions to food webs can reduce fish stocks, threatening fishing livelihoods and local economies.
Loss of Ecosystem Services
Ocean acidification weakens ecosystems that provide key services, such as coastal protection and carbon storage, increasing the risks of erosion, flooding, and storms.
Jeopardizes Ecotourism
Degradation of coral reefs and declining biodiversity reduce the quality of underwater activities and can adversely affect ecotourism revenue across Caribbean islands.
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The Science of Ocean and Coastal Acidification
Discover how rising CO₂ is changing ocean chemistry and impacting marine life, ecosystem, and the economy.
Monitoring Ocean and Coastal Acidification
Find how to track ocean acidification changes and trends
Educational Resources for All Audiences
Find easy-to-use resources to learn, teach, and take action
