A massive giant clam, Tridacna gigas, grows on a shallow coral reef in Raja Ampat, Indonesia.

alcyonacea animal animal themes animals in the wild anthozoa aquatic beautiful beauty in nature biodiversity bivalve clam cnidaria color image colorful coral coral reef coral triangle day dock ecology ecosystem endangered species environment giant clam gorgonian growth habitat healthy heterodont horizontal indo pacific ocean indonesia jetty large living organism marine biology mollusk multi colored nature new guinea no people outdoors papua photography pier raja ampat reef reefscape remote location sea sea life seascape soft coral southeast asia species symbiosis symbiotic relationship tranquil scene tridacna tridacna gigas tridacninae tropical climate undersea underwater variation water wilderness wildlife zoology