The Colt coral is a soft, branching coral that is found in Indo-Pacific coral reefs. It does not have the calcium carbonate skeleton of the reef building corals. It is a hardy aquarium species and is commonly cultured. Like other corals, its tissues are home to photosynthetic algae known as zooxanthellae which provide the coral with oxygen and nutrients.
Named for their appearance, which can resemble a baseball glove, the Leather coral, or Toadstool coral is found in various shades of brown, green, or yellow with white or gold polyps. It can be difficult to identify leather corals because many of them are similar in appearance. As they grow older, they develop a folded appearance. Like other soft corals, Leather corals incorporate tiny, single celled algae, known as zooxanthellae in their tissues.
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