• Norwegian: -


The tubercles of the O. muricata are almost spherical, in contrast to the pointed tubercles of the similar Onchidoris proxima. The body length does not exceed 2 cm. The color is usually translucent white or pale yellow.


It is frequently seen on algae in the subtidal zone, feeding on the bryozoans. It has been registered down to 200 meters depth.


This species has an East Atlantic distribution, from the White Sea and Greenland to France.