Soft-shell clams (American English) or Sand gaper (British English/Europe), scientific name Mya arenaria, popularly called "steamers", "softshells", "piss clams", "Ipswich clams", or "Essex clams", are a species of edible saltwater clam, a marine bivalve mollusk in the family Myidae.

a culinary term for crabs that have recently molted their old exoskeleton and are still soft.

Any turtle of the family Trionychidae, such turtles having a carapace that has no scutes and is leathery and pliable at the sides.