Coral reefs contain one quarter of all ocean species

Coral reefs represent one of Earth's most remarkable examples of concentrated biodiversity, hosting an estimated one quarter of marine species despite occupying less than 1% of ocean floor. This disproportionate species richness reflects complex three-dimensional reef structure providing extensive habitats, feeding opportunities, and shelter for diverse organisms. Coral polyps form the reef foundation establishing the structural framework supporting fish, crustaceans, mollusks, echinoderms, and countless other species. Reef biodiversity creates complex food webs and ecological interactions supporting overall function. Beyond ecological importance, coral reefs provide critical ecosystem services: coastline protection from erosion and storms, fishery support for over 500 million people, tourism revenue, and potential pharmaceutical compounds. Over half the world's coral reefs have degraded or been destroyed, threatening dependent species and human populations relying on reef services.