Deep-water corals are a type of coral that lives in the deeper, colder waters of the world’s oceans, typically at depths of 30 meters or more. They are found in every ocean on Earth and can occur at depths of up to 7,000 meters. Deep-water corals are often found on seamounts, underwater mountains that rise from the ocean floor, and can also be found on the slopes of continental shelves. Like their shallow-water counterparts, deep-water corals are important habitat for a variety of marine species and are a key component of deep-sea ecosystems. However, they are less well-known and studied than shallow-water corals, in part because they are more difficult to access due to their deep-water habitat.