Tridacna gigas

…diversification, with the giant clam, Tridacna gigas, a spectacular example. Another example of the Pacific’s richness in species is found among the tunas: six species (one of them endemic) roam the tropical reaches of the Pacific, furnishing more than half of the world’s tuna catch.

…in the giant clam (Tridacna gigas) of the Pacific and Indian oceans.

…of South Pacific coral reefs, Tridacna gigas, which may be more than 137 centimetres (54 inches) in length and weigh 264 kilograms (582 pounds). Such an animal may have a life span of about 40 years.