Bivalves twin shells

Giant Clam (Tridacna maxima) with commensal blue/cyan algae embedded in flesh, providing oxygen while absorbing nutrients from the clam.
Giant Clam (Tridacna maxima) with commensal blue/cyan algae embedded in flesh, providing oxygen while absorbing nutrients from the clam. colour color blue cyan wave wavy coral reef buried embedded mouth smile Molluscs single one alone lonely isolated individual bivalve bivalves shell shells mollusc molluscs hinge hinged colour color colourful colorful vibrant vibrent vibrint blue cyan yellow lips mantle mantel shell armor armour armoured armored protect protected protection hard sheild shield home house shelter sheltered safe safety secure security secured sheltering |Giant Clam (Tridacna maxima)

Penguin Wing Oyster (Pteria penguin) on gorgonian sea fan.
Penguin Wing Oyster (Pteria penguin) on gorgonian sea fan. Bivalvia single one alone lonely isolated individual bivalve bivalves shell shells mollusc molluscs hinge hinged protude protubance spine |Penguin Wing Oyster (Pteria penguin)

Giant Rock Scallop (Crassadoma gigantea) covered in ascidians Pink Mouth Hydroids (Ectopleura marina) and sponges.
Giant Rock Scallop (Crassadoma gigantea) covered in ascidians Pink Mouth Hydroids (Ectopleura marina) and sponges. Gastropoda single one alone lonely isolated individual hide hiding hidden conceal concealed bury buried concealing hid cover covering covered camouflage camoflage camouflaged camoflaged hidden hiding hide cryptic colour color colourful colorful vibrant vibrent vibrint white pink yellow mauve purple gold golden grip grab gripping grabbing hold holding grasp grasping grasped held |Giant Rock Scallop (Crassadoma gigantea)

Townsend's Scallop (Chlamys townsendi) with gorgonians on deep reef.
Townsend's Scallop (Chlamys townsendi) with gorgonians on deep reef. Bivalvia bivalve bivalves shell shells mollusc molluscs hinge hinged sponge orange colour color colourful colorful vibrant vibrent vibrint vertical |Townsend's Scallop (Chlamys townsendi)

Rock Scallop (Crassodoma gigantea) covered in encrusting sponge.
Rock Scallop (Crassodoma gigantea) covered in encrusting sponge. Bivalvia single one alone lonely isolated individual bivalve bivalves shell shells mollusc molluscs hinge hinged sponges lip lips oyster scollop grip grab gripping grabbing hold holding grasp grasping grasped held camouflage camoflage camouflaged camoflaged hidden hiding hide cryptic |Rock Scallop (Crassodoma gigantea)

Fluted Giant Clam (Tridacna squamosa)
Fluted Giant Clam (Tridacna squamosa) Bivalvia bivalve bivalves shell shells mollusc molluscs hinge hinged armour armor armoured armored ridge ridged ridges |Fluted Giant Clam (Tridacna squamosa)

Giant Clam (Tridacna sp.) Detail of inlet opening in mantle.
Giant Clam (Tridacna sp.) Detail of inlet opening in mantle. Bivalvia line lines lined stripe stripes striped patterns pattern band bands banded soft delicate fragile breakable bivalve bivalves shell shells mollusc molluscs abstract open opening inlets vertical |Giant Clam (Tridacna sp.)

Fluted Giant Clams (Tridacna squamosa) with Cabbage Coral (Turbinaria reniformis)
Fluted Giant Clams (Tridacna squamosa) with Cabbage Coral (Turbinaria reniformis) Bivalvia two pair couple together duo paired partner partners twin partnership bivalve bivalves shell shells mollusc molluscs hinge hinged soft delicate fragile breakable |Fluted Giant Clams (Tridacna squamosa)

Giant Clam (Tridacna maxima) Detail of inlet vent.
Giant Clam (Tridacna maxima) Detail of inlet vent. Bivalvia bivalve bivalves shell shells mollusc molluscs hinge hinged line lines lined stripe stripes striped patterns pattern band bands banded entry enter valve open opening vertical |Giant Clam (Tridacna maxima)

Electric Clam (Limaria orientalis)
Electric Clam (Limaria orientalis) Bivalvia single one alone lonely isolated individual bivalve bivalves shell shells mollusc molluscs hinge hinged colour color colourful colorful vibrant vibrent vibrint red blue cyan orange tassel tassell tasell tasells tassells tassels tassillated tasillated tassilated tasilated tassle tasslle tassilles tassles whiskers whiskered beard bearded beards whisker barbel barbell barbels barbells |Electric Clam (Limaria orientalis)

Burrowing Clam (Tridacna crocea) growing out of Porites coral.
Burrowing Clam (Tridacna crocea) growing out of Porites coral. Bivalvia single one alone lonely isolated individual colour color colourful colorful vibrant vibrent vibrint mauve purple blue lip lips home house shelter sheltered safe safety secure security secured sheltering nest corals bivalve bivalves mantle single one alone lonely isolated individual line lines lined stripe stripes striped patterns pattern band bands banded |Burrowing Clam (Tridacna crocea)

Townsend's Scallop (Chlamys townsendi) covered in encrusting ascidian.
Townsend's Scallop (Chlamys townsendi) covered in encrusting ascidian. Bivalvia bivalve bivalves shell shells mollusc molluscs hinge hinged camouflage camoflage camouflaged camoflaged hidden hiding hide cryptic colour color colourful colorful vibrant vibrent vibrint orange |Townsend's Scallop (Chlamys townsendi)

Coral Scallop (Pedum spondyloideum) in Porites Coral.
Coral Scallop (Pedum spondyloideum) in Porites Coral. Bivalvia single one alone lonely isolated individual colour color colourful colorful vibrant vibrent vibrint blue purple lips mouth |Coral Scallop (Pedum spondyloideum)

Flame File Shell (Ctenoides ales) or Electric Clam.
Flame File Shell (Ctenoides ales) or Electric Clam. Bivalvia Limoida Limidae bivalve bivalves shell shells mollusc molluscs hinge hinged single one alone lonely isolated individual colour color colourful colorful vibrant vibrent vibrint red orange lip lips lipped tassel tassell tasell tasells tassells tassels tassillated tasillated tassilated tasilated tassle tasslle tassilles tassles whiskers whiskered beard bearded beards whisker barbel barbell barbels barbells |Flame File Shell (Ctenoides ales)