Western part of the sea, which is more saline, hosts three forms of Acartia clausi, as well as Centropages ponticus, meroplankton and larvae of gastropoda, bivalvia and polychaete.
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Gastropod shell morphology is usually quite constant among individuals of a species, and with exceptions, fairly constant among species within each family of gastropoda.
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Snails and slugs and their relatives
(gastropod) a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes
The Gastropoda or gastropods are a large taxonomic class within the molluscs, a class of animals that are more commonly known as snails and slugs. ...
(gastropod) a class of molluscs which includes snails slugs and sea-hares, having a distinct head, with eyes and tentacles and often have a single shell.
(Gastropod) ( gas - troh - pod) A generic term for animals belonging to the class Gastropoda. A single coiled shell and a single muscle mass for locomotion characterize them. Snails and slugs are gastropods.
(Gastropod) A member of the Class Gastropoda, a group of asymmetrical molluscs in which the foot is broad and flat, the mantle undivided, the shell in one piece, usually conical. Includes the limpets, whelks, and other snail-like molluscs.
(Gastropod) A member of the largest class of phylum Mollusca Characteristics generally include: a foot upon which the rest of the body (called the visceral mass) sits, a well-developed head, a protective one-piece shell, and body torsion - where most of the visceral mass is twisted anticlockwise ...
(Gastropod) A mollusc with one shell.
(Gastropod) A soft-bodied animal, which is often protected by a shell. Marine gastropods include sea snails, sea hares, limpets, abalones, turbans, and tritons.