Deep-sea Corals

Unlike their shallow-water counterparts, deep-sea corals live in dark, cold parts of the ocean beyond the reach of sunlight. They don’t rely on algae or photosynthesis for survival—instead, they filter-feed on tiny organic particles that sink from surface waters. These corals grow slowly, often over centuries, and form bioherms—multi-generational coral structures that provide valuable records of past ocean conditions. Their polyps are typically larger due to less crowding. Found mainly on seamounts and rocky surfaces, deep-sea corals are key to understanding ocean ecosystems, biodiversity, and long-term environmental change.

By Kristen M. Kusek, Tim Silva :: Originally published online November 6, 2007