What is the world's largest type of clam?

The world's largest clam is the giant clam (Tridacna gigas), which can grow up to 4 feet (1.2 meters) long and weigh over 500 pounds (225 kilograms). These massive clams are found in the shallow waters of coral reefs in the South Pacific and Indian Oceans, and are known for their unique appearance and impressive size.

Giant clams are filter feeders, meaning they obtain their nutrients by filtering water through their gills and trapping plankton and other small organisms. They are also known for their symbiotic relationship with algae, which live inside their tissues and provide them with nutrients through photosynthesis.

Despite their large size, giant clams are considered vulnerable due to overfishing and habitat destruction. They are protected in many countries, and efforts are being made to conserve their populations and prevent their extinction.