Littorinidae
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Lit·to·rin·i·dae
Definition of Littorinidae
: a large nearly cosmopolitan family of snails (suborder Taenioglossa) that have broad conical shells with round aperture and horny operculum, that are chiefly littoral in salt water or brackish or fresh water and are remarkably resistant to desiccation, and that feed on algae
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