On the outer surface of the shells, note whether the exterior texture is smooth, or is roughened … See more

The soft-bodied animal that creates the shell is a mollusk, so it is related to clams, oysters, snails, slugs, squids, and octopus. Bivalves, such as mussels, clams, and oysters, ar… See more

Freshwater clams, usually called fingernail clams or pea clams, are usually much smaller (¾ inch or less), more circular, with the umbo about the same distance from front and b… See more