Distribution and status
Abundant. Found from the Lofoten Islands in the north to the north coast of the Mediterranean.
Ecology and behaviour
Found through-out the littoral zone and into the shallow sublittoral. It is found on stony/rocky bottom, often on the underside of stones lightly embedded in sand and gravel in rock pools. It feeds by grazing material from the rock surface using its radula
Key identification features
- Girdle relatively coarsely ornamented with rounded granules
- Coarse ornamentation of the valves but not linear
- Girdle often displays a two-tone banding
Taxon version key
[NBNSYS0000176059]
Size: Up to about 28mm long. Shape: Relatively narrow girdle with the shell making up 75% of the width. Valves are relatively tall with a very distinct keel.