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Tubastraea sp. cup coral
Author/Photographer/Artist: Nick Hobgood
Source: wikipedia
Uploaded: 2011-09-06 11:36:55
Keywords: Stony coral, Scleractinia

Tubastraea sp. cup coral with extended polyps at night. During the day the polyps retract into a hard cup like structure at its base.

License: GFDL - Gnu Free Document License