Assessing the role and importance of deep-sea corals and associated fauna in the ocean ecosystem has become a main research topic for many governments and scientific institutions. Deep-sea corals are of crucial importance to biodiversity in the ocean. They are suitable habitats for fish and invertebrates, serving as feeding areas for many aggregating species, a shelter from predators, a nursery for juveniles and a substrate for benthic species.1 Deep-sea corals can occur as small colonies or in dense clusters, forming vast reefs or mound complexes several kilometers in width and tens of meters high.1 They are found worldwide, distributed in depths ranging from 100 to 3,000 meters, and in different settings, such as continental shelves, slopes, canyons and seamounts, in which a sensitive equilibrium between submarine bottom currents and sedimentary inputs supports their aggregation.
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