Texture The flesh on your fish should ... at a recommended temperature of 40°F (4°C) Open Mollusk Shells The freshness of shellfish such as muscles, clams, and oysters is determined by their ...

A retractable foot, a siphon for sucking up water, powerful muscles, and ... a kind of mollusk that's encased in a shell made of two valves, or hinging parts. And that shell comes in all different ...