Also known as Cockscomb Oyster, Foam Oyster, Giant Coxcomb Oyster, Giant Honeycomb Oyster, Honeycomb's Oyster, Razor Oyster, Rock Oyster, Saltwater Oyster, True Oyster, Wrinkled Oyster, Zigzag Oyster.
Found attached to coral, rocks and shipwrecks, over coral faces and walls of lagoons and coastal reefs. These oyster's are often heavily overgrown with organisms
They feed on plankton.
Length - 25cm
Depth - 0-50m
Widespread Western Central Atlantic, Indo-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. (edit) Ref: https://en.wikipedia.org/wiki/Giant_honeycomb_oyster