It’s Gorgeous Things Found Underwater Day!
Giant Clams
Photo: Sami SarkisThe largest mollusks on Earth, adult giant clams permanently affix themselves to surfaces such as sand or coral reef rubble. The behemoths are capable of reaching 4 feet (1.2 meters) long and weighing more than 500 pounds (227 kilograms). They can live a hundred years or more in the wild.