Sea Fan
Sea fans are fan shaped, flexible horny corals. Their main skeletal structure is formed by gorgonin. Sea Fans are a soft coral with calcium carbonate spicules scattered throughout their body. They can be red, purple, yellow, or orange and grow up to six feet tall and five feet wide. Sea fans will anchor themselves in the sand or the mud, unlike other types of coral that attach to hard substrates. Sea fans are mainly found in the Atlantic Ocean, from Bermuda to Curacao. Sea Fans are unique in that they are the one of a very few groups of coral to have a gastrovascular cavity. This allows them to eat larger prey. To feed, the polyps spread out their feathery tentacles to form a net to catch prey. The polyps are inter-connected. One part of the sea fan can support and feed the whole colony, an aspect that is both beneficial and detrimental, as it allows disease to spread quickly throughout the coral.