A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

A Coconut Octopus (Amphioctopus marginatus), a species that gathers coconut and mollusk shells for shelter, Lembeh Strait, Sulawesi, Indonesia, Southeast Asia, Asia

A giant clam along with a myriad of hard and soft corals compete for space on the substrate of Darwin's Wall, Palau, Micronesia, Pacific

A huge giant clam, Tridacna gigas, grows on a shallow coral reef amid the tropical islands of Raja Ampat, Indonesia.

A massive giant clam, Tridacna gigas, grows on a shallow coral reef in Raja Ampat, Indonesia.

A colorful soft coral adorns a giant clam, Tridacna sp., growing on a healthy reef in Raja Ampat, Indonesia.

Fiji, Indo-Pacific sergeant major egg mass on the shell of a giant tridacna clam (Tridacna gigas).

Bear paw Clam (Hippopus hippopus) on detrital background. Rare in some areas of the lagoon due to overfishing. New Caledonia.