Deep-sea soft corals (Callogorgia spp.) are abundant foundation species (species which built main reef structure), often occurring as extensive fields of colonies in the upper bathyal region of the deep sea and found between 650 – 3280 feet deep. Colonies of soft corals create habitat for a wide variety of animals. They, often serve as nursery habitats for scyliorhinid catsharks and have mutually beneficial relationships with ophiuroid brittle stars. Read more about the deep sea soft corals here.