Topic summary
Soft-shell clam

Soft-shell clams (American English) or Sand gaper (British English/Europe), scientific nameMya arenaria, popularly called "steamers", "softshells", "piss clams", "Ipswich clams", or "Essex clams", are a species of edible saltwater clam, a marinebivalvemollusk in the family Myidae.
Right and left valve of the same specimen: