While the term “coral” may conjure up images of sunny tropical reefs in warm, shallow waters — over half of all known coral species actually live in deep, dark waters. Found all over the world, deep-sea corals provide habitat complexity to the ocean floor, just as trees turn an otherwise flat, open plain into a varied environment. In the deep ocean, coral communities can essentially serve as important ecosystems unto themselves. Dive into the resources below and explore the diversity of life in these deep-sea ecosystems.