Photo of Animalia: Giant Clam (species: Tridacna gigas) (Lizard Island Field Guide)

Tridacna gigas at 21 m depth off South Island, Lizard Island Group (30 Jan 2016). This is a very deep record for this species in the area and it may have rolled down the slope during a cyclone. The mantle is unusual in that it has no obvious markings.

© Anne Hoggett