Southern giant clam
- kingdom: Animalia
- phylum: Mollusca
- class: Bivalvia
- order: Cardiida
- family: Cardiidae
- genus: Tridacna
- species: Tridacna derasa
Nouméa
South Province
New Caledonia
Ngereklmadel
Ngatpang
Palau
Puerto Galera- Sabang
Mimaropa
Philippines