Hard Coral Structure with Giant Clam Underwater close-up of hard coral formations with giant clam nestled between coral, taken in tropical reef environment Underwater close-up

A giant clam on a coral reef.

A giant clam on a coral reef opens and closes its shell.

What is Coral Bleaching and What Causes It - Fight For Our Reef

What Is Coral Bleaching? Causes, Impacts & Action for the Great Barrier Reef

What is Coral Bleaching? | Office of National Marine Sanctuaries