Juergen Freund / Cultured Golden South Sea pearls of the Pearl oyster (Pinctada maxima) Jewelmer pearls, Philippines

Juergen Freund / Bivalve mollusc lives in crevices in colonies of living hard corals. Only the the shell opening and mantle are visible, along with the minute eyes along its margin, West New Britain, Papua New Guinea.

Juergen Freund / Details of Thorny oyster (Spondylus varius) with "eyes" in its mantle edge near the shell, New Ireland, Papua New Guinea

Juergen Freund / Divers 'encouraging' Giant clams (Tridacna sp) to spawn by injecting serotonin into the clams. Sperm and eggs are collected and fertilised and larvae are cultured for clam farming. Sempoma, Sabah, Bor...

Juergen Freund / Details of shell, eyes and mantle of Variable thorny oyster (Spondylus varians / varius) Batangas, Philippines

Juergen Freund / Thorny oyster (Spondylus sp) camouflaged on coral reef, Komodo NP, Indonesia.

Juergen Freund / Thorny oyster (Spondylus sp) close up mantle and eyes, Bali, Indonesia.

Juergen Freund / Erik Koti cleans his farmed Giant clams (Tridacna maxima) and (Tridacna derasa) Solomon Islands, July 2010.

Juergen Freund / Honeycomb oyster (Hyotissa hyotis) on coral reef, Raja Ampat, West Papua, Indonesia.

Juergen Freund / Details of a thorny oyster (Spondylus varians / varius) with "eyes" in its mantle edge near the shell, New Ireland, Papua New Guinea

Juergen Freund / Variable thorny oyster (Spondylus varians / varius) and featherstar on coral reef, Misool, Raja Ampat, West Papua, Indonesia, January

Juergen Freund / Close up of siphon of a Giant clam (Tridacna sp) Misool, Raja Ampat, West Papua, Indonesia.

Juergen Freund / Close up of siphon of a Giant clam (Tridacna sp) Misool, Raja Ampat, West Papua, Indonesia.

Juergen Freund / File shell / flaming scallop (Lima sp) Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Thorny oyster (Spondylus varians / varius) and featherstar on coral reef, Misool, Raja Ampat, West Papua, Indonesia, January

Juergen Freund / Detail of mantle of Giant clam {Tridacna gigas} Indo-pacific

Juergen Freund / Bivalve found in a dead coral head (Pocillipora verrucosa) as part of Barcode of Life project, Coral Reef census, Lizard Island, Queensland, Australia, April 2008

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

Juergen Freund / Mantle of Giant clam {Tridacna gigas} on seabed, Indo-pacific

Juergen Freund / Syphon of Giant clam {Tridacna gigas} on seabed, Indo-pacific

Juergen Freund / Syphon of Giant clam {Tridacna gigas} on seabed, Indo-pacific

Juergen Freund / Giant clam {Tridacna gigas} on seabed, Indo-pacific

Juergen Freund / Giant clam {Tridacna gigas} on seabed, Indo-pacific

Juergen Freund / Clam {Tridacna sp} encrusted with corals, Indo-pacific

Juergen Freund / Detail of syphon of Giant clam {Tridacna gigas} Indo-pacific

Juergen Freund / Siphon of Giant clam (Tridacna sp) Philippines

Juergen Freund / Juvenile Giant clam (Tridacna sp) held in hand on commerical clam farm, Palau, Micronesia

Juergen Freund / Giant clam (Tridacna sp) in breeding pool on commerical clam farm, Palau, Micronesia

Juergen Freund / Juvenile Giant clams (Tridacna sp) in bucket on commerical clam farm, Palau, Micronesia

Juergen Freund / Juvenile Giant clams (Tridacna sp) in breeding pens on commerical clam farm, Palau, Micronesia

Juergen Freund / Shallow coral reef with Giant clam {Tridacna sp} and snorkeler, Papua New Guinea

Juergen Freund / Penshell {Pinna carnea} in seagrass on seabed Caribbean sea

Juergen Freund / Diver and Giant clam {Tridacna gigas} Great Barrier Reef, Australia