Fan Coral on Dungus Reef

Photo copyright Tim Nicholson.
Taken on Dungus Reef in the Egyptian Red Sea.
Fan Coral

Sea fans are gorgonian corals. They grow at right angles to the prevaling current, their tentacles straining microscopic particles of food from the water.

Further Reading
Invertebrate Zoology, by Robert D Barnes, Brooks Cole, 2003 ISBN 0-0302-6668-8