Similar term(s): mollusc.
Mollusks are a large group of soft-bodied invertebrates that are widespread in
salt water, freshwater, and terrestrial habitats. Examples of mollusks include
snails, clams, squids, octopus, and cuttlefish.
Most mollusks have a muscular foot and a hard, calcareous outer shell
protecting their soft body, but some, as in the squid and octopus, lack this
type of shell.
Sea snails are an example of aquatic mollusks
Source: Canada's Arctic Sea
To read about this term in context:
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