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a mollusk
Snails are gastropods. The word snail is a common name for almost all members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word snail is used in a general sense, it includes sea snails, land snails and freshwater snails.
Class GastropodaSomething else. They are members of the mollusk class of Gastropoda.
legsa
A stingray is a mollusk
false, I think, slugs are in mollusk class and do not have multi section body
There are many which might have oval or close to oval shells, but one that comes to mind quickly is the cowry, some of which are nearly perfectly olive shaped (Class Gastropoda, Family Cypraeidae).
Clams, oysters, and mussels are in the shellfish family, under the subheadings of mollusks and bivalves. Mollusks include abalone and scallops as well as clams, oysters, and mussels. Bivalves are any creature with a soft body that lives between two hinged shells.
Cephalopods
A squid is in the PHYLUM Mollusca (Mollusk) CLASS Cephalopodae, the ORDER Teuthoidea
Clams: Phylum: Mollusca (Mollusk), class - Bivalvia
cephalopods