mol·lusc molluscs in AM, use mollusk A mollusc is an animal such as a snail, clam, or octopus which has a soft body. Many types of mollusc have hard shells to protect them
A member of a varied group of invertebrates that secrete calcium carbonate to form shells The shells may be external and obvious (as in snails and mussels) or internal and small (as in slugs)
An invertebrate animal lacking an external skeleton, but possessing an external shell lined with a specialized epidermal membrane called the mantle (much reduced in some species, such as the squids)
common name for members of a phylum (sub-section of the animal kingdom) of soft-bodied animals, with bodies usually covered by a hard external shell Some molluscs, like the octopus, do not possess a shell
An aquatic, soft-bodies invertebrate that lives in a shell, found either in seawater or freshwater If it has only one shell (e g the abalone shell), it is univalve If it has two shells connected by a hinge, it is an oyster or bivalve mollusc