Coral Reefs

Called the “rain forests of the sea,” coral reefs are important ocean ecosystems that support a quarter of all marine organisms despite covering less than one percent of the sea floor.

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A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States.

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Deep-sea Corals

It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft) below the ocean’s surface, where the water is...