Tropical Pacific Reefs

Smooth Giant Clam

Tridacna derasa

Location: Great Barrier Reef, Australia

Scientific Name: Tridacna derasa

Also known as: Derasa Clam, Southern Giant Clam

Category: Giant Clams

Size: Up to 20 in. (up to 50 cm)

Depth: 3-30 ft. (1-10 m)

Distribution: Indo-West Pacific, Australia