Granules on girdle have a mealy appearance on Boreochiton ruber
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Boreochiton ruber (Linnaeus, 1767)
Boreochiton ruber collected Isle of Skye 2013.
It occurs from the Barents and White Seas in the north, around the coasts of Norway, Sweden, Greenland and as far south as the Azores. It is found on all shores around Britain and Ireland.
The map provided here shows the distribution of the species based on Conchological Society data.
Occurs from low water to depths of 300m but never in high densities. It feeds by grazing material from the rock surface using its radula. Rocky bottoms but also pebbles on sand.
Size: Up to about 21mm long. Shape: Relatively narrow girdle with the shell making up 75% of the width. Valves are rounded with a moderate keel.