• Norwegian: -

Characteristics:

It may be confused with O. muricata, but has more pointed tubercles of varying size. The color varies from white to light yellow. It can reach a body length of 2,5 cm.

Habitat:

It is frequently seen on algae in the subtidal zone, feeding on the Bryozoan Electra pilosa. It has been registered as deep as 60 meters.

Distribution:

This northern species has a circumpolar distribution, both in the Pacific and Atlantic Oceans. In Europe it is registered on Greenland, the British Isles, around Iceland and in Norway.