Black Keyhole Limpet

Scutus unguis

Black Keyhole Limpet

Despite the name this is a sea slug rather than a true limpet, with a small white internal shell almost hidden under a broad black mantle. It grazes algae on rocky shores and reefs from the tide line down to around 37 metres, the fleshy mantle folding over the shell as it moves.

Taxonomy: Animalia › Mollusca › Gastropoda › Lepetellida › Fissurellidae › Scutus

Species data via the World Register of Marine Species (WoRMS), AphiaID 216284.

FAQ

How deep does the Black Keyhole Limpet live?
The Black Keyhole Limpet (Scutus unguis) is typically found at 0–37 m.
Is the Black Keyhole Limpet dangerous to divers?
The Black Keyhole Limpet is harmless to divers.