Also known as Bioeroding Scallop, Boring Bivalve, Boring Pectinid Bivalve, Coral Clam, Coral-boring Scallop, Iridescent Clam, Iridescent Scallop, Molluscs, Pectinid Bivalve, Pectinid Scallop, Scallops.
These fragile shells with their brightly coloured mantle and minute eyes along the margin, are found buried deep into coral recesses for protection against predators over lagoon reefs.
They feed on plankton.
Length - 5cm
Depth - 0-26m
Widespread Pacific Ocean
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: https://www.sealifebase.ca/summary/Pedum-spondyloidaeum.html