An edible mollusk is a type of aquatic invertebrate that can be consumed as food. The four crossword solutions for this term are MUSSEL (6 letters), SCALLOP (7 letters), ABALONE (7 letters), and CLAM (4 letters). Mussels are bivalve mollusks with two hinged shells, while scallops are also bivalve mollusks but have a fan-shaped shell. ABALONE are univalve mollusks with a single spiral shell, and clams are also univalve mollusks with two shells that are held together by a hinge. All four of these mollusks are edible and can be found in various parts of the world.