A large phylum of invertebrate animals that have a soft, unsegmented body, often enclosed in a calcareous shell, including snails, clams, and octopuses.
The marine biologist studied the diverse range of molluscs found in the coral reef.
molluscnoun
A soft-bodied invertebrate animal, often with a hard shell, belonging to the phylum Mollusca, which includes snails, clams, and octopuses.
The mollusc slowly moved across the rock, leaving a trail of slime behind.