Also known as Clam, Mollusc, Rosewater Giant Clam.
Found over coral and rocky reefs and in lagoons.
They feed on plankton.
Variable in colour.
Widespread Indo-West Pacific
Most Bivalves are permanently anchored in fissures or depressions in the rock surface of the reef, some may become covered in algae and other marine life.
Other Bivalves swim free, either by a well developed foot or propelled along by a jet of water from their mantle cavity. Ref: x