keyhole limpet

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keyhole limpet

mollusk

Also known as: Fissurellidae

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annotated classification

In gastropod: Classification
…Japan, Australia, and South Africa; keyhole limpets (Fissurellidae) in intertidal rocky areas. Superfamily Patellacea (Docoglossa) Conical-shelled limpets, without slits or holes, found in rocky shallow waters (Acmaeidae and Patellidae). Superfamily Trochacea
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description

In limpet
Keyhole limpets, of the prosobranch family Fissurellidae, have a slit or hole at the apex of the shell, through which water currents (and wastes) exit.
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