What is a "clam"?

A clam is a bivalve mollusk that lives in both marine and freshwater environments. They have a two-part hinged shell that they can open and close for protection. Clams are filter feeders, using their gills to extract food particles from the surrounding water. They are known for their ability to burrow into the sediment or attach themselves to rocks or other surfaces. Clams come in a variety of species and sizes, ranging from small ones found along sandy beaches to larger ones harvested for culinary purposes. They are a popular seafood delicacy enjoyed in various cuisines around the world.