Florent's Guide To The

Tropical Pacific Reefs

Smooth Giant Clam
Tridacna derasa
Smooth Giant Clam
Also known as: Derasa Clam, Southern Giant Clam
Category: Giant Clams
Scientific Name: Tridacna derasa
Size: Up to 20 in. (up to 50 cm)  
Depth: 3-30 ft. (1-10 m)
Distribution: Indo-West Pacific, Australia
Mollusca (Phylum)
└Bivalvia (Class)
 └Cardiida (Order)
  └Cardiidae (Family)
   └Tridacninae (Subfamily)
    └Tridacna (Genus)

Bivalves & Chitons
Giant Clams

Smooth Giant Clam

Giant Clam

Maxima Giant Clam

Flutted Giant Clam

Hippopus Clam

Boring Giant Clam



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© 2025 Florent Charpin