Limpets

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These gastropods are aquatic snails with conical shells and a strong muscular foot. The graze on algae growing on rocks using what is called a radula, which consists of rows of tiny teeth that scrape food from surfaces.  Limpets can have 100 rows of teeth, but only use the outermost 10 when feeding.  Those rows of teeth wear down and are replaced every 12-48 hours!

Gently insert your fingernail under the edge of a limpet shell and you might feel the limpet pull itself closer to the rock for protection.

Not all snails that look like limpets are considered “true” limpets, but because of their similar appearance, they are often called by that name.

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