Tubastraea diaphana (Dana, 1846)

Distribution: 

Common in the Solitary Islands Marine Park. Distributed throughout the Indo-Pacific region. In Australia recorded from Jurien Bay in Western Australia, around the tropical north of the continent and south to Sydney on the east coast.

Ecological Notes: 

Usually found in caves or under overhangs, or on shaded walls. Depth to 40 m.

Additional Notes: 

Dark green colonies usually have their polyps retracted during the day. 

References: 

Veron, J.E.N., Corals of Australia and the Indo-Pacific. Angus and Robertson Publishers, 1986. Pp. 580.