Floreana coral  (Tubastraea floreana)

Floreana coral is an azooxanthellate coral, meaning that this species does not have zooxanthellae, the algae that live inside the tissues of some corals and provide the coral with food (3). Corals without zooxanthellae instead feed on zooplankton, capturing these tiny aquatic animals in their outstretched tentacles (5).