0 any animal that has a soft body, no spine, and is often covered with a shell. Many mollusks live in water: --
Oysters are mollusks, as are snails and cuttlefish.
1 any of a large group of animals that have soft bodies, no spine (= supporting bones), and usually a hard shell: --
The lower marine sediments are composed of three superimposed beds of marine to brackish water clay containing fossil mollusks and capped with peat.
These strata are typically unfossiliferous, except for rare beds containing brackish and marine mollusks.
The spotted eagle ray's specialized chevron-shaped tooth structure helps it to crush the mollusks' hard shells.
The hinges come to a point, a superficial resemblance to most (phylogenetically unrelated) bivalve mollusk shells.
Like most other bivalves, these mollusks are suspension feeders.
Typhlosoles occur in bivalve mollusks, lampreys and some annelids and echinoderms.
Navy divers locate the group of mollusks in the canal system, and use explosives to destroy them.
The oil had a drastic impact on the littoral crab and on the mollusk fauna of the beaches which were contaminated.
