Like oysters and mussels, clams are bivalves, a kind of mollusk that's encased in a shell made of two valves, or hinging parts. And that shell comes in all different sizes. There are small clams ...

Depending on the type, clams range in color from white to brown to grey. Mussels are more whimsical in appearance, with a ...

The clam uses a tiny foot to burrow into the seafloor as it grows. Its shell can end up several feet down, with only its neck poking up into the water. Called siphons, these necks, double-barreled ...