David Fleetham / Coral-boring scallop (Pedum spondyloideum) with colourful mantle. Yap, Micronesia.

Georgette Douwma / Coral clam (Pedum spondyloideum) close up of mouth, Lembeh Strait, Sulawesi, Indonesia.

Franco Banfi / Coral clam (Pedum spondyloideum) Maldives, Indian Ocean

Franco Banfi / Coral clam (Pedum spondyloideum) close up, Maldives, Indian Ocean

Franco Banfi / Bivalve scallop (Pedum spondyloideum) inside a coral covered with purple sponge, Maldives, Indian Ocean

Juergen Freund / Close up of lips / mouth of a Coral clam (Pedum spondyloideum) Indo-pacific

Doug Perrine / Mantle of Coral clam / scallop {Pedum spondyloideum} visible in coral, Flinders sea, Coral sea, Australia

Juergen Freund / Coral Clam in the Pacific off Phillippines

David Fleetham / Close-up of the brightly coloured mantle and rows of minute eyes on a coral-boring scallop (Pedum spondyloideum / spondyloideum), Mabul Island, Malaysia.

Pete Oxford / Coral Clam (Pedum spondyloideum), Fiji

Juergen Freund / Coral clam {Pedum spondyloidum} Philippines

David Fleetham / Close up of mantle and eyes of the Coral scallop (Pedum spondyloideum), Fiji, Pacific Ocean.