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Any member of a class of molluscs (Gastropoda) that includes snails, slugs, and limpets; univalve mollusc.

Various gastropods from different types: black slug (a slug), Haliotis asinina (an abalone), Cornu aspersum (a land snail), Notarchus indicus (a seahare), Patella vulgata (a limpet), and Polycera aurantiomarginata (a nudibranch).

Any member of a class of molluscs (Gastropoda) that includes snails, slugs, and limpets; univalve mollusc.

Cepaea nemoralis: a European pulmonate land snail, which has been introduced to many other countries

Any member of a class of molluscs (Gastropoda) that includes snails, slugs, and limpets; univalve mollusc.

The anatomy of a common air-breathing land snail: much of this anatomy does not apply to gastropods in other clades or groups.