The sea hare primarily eats green algae such as Ulva sp.
Although Dolabrifera brazieri is usually speckled green, the sea hare is quite variable in colour, ranging from a light water yellow to a dark purple brown.
This large Dolabrifera species, which grows to about 15 cm long, differs from the tropical Dolabrifera dolabrifera by its much larger size and the presence of large smooth, conical tubers all over its body.
The lseahare is often found in rock pools and other intertidal areas, often under rocks, where the lumpfish lays a very recognisable egg mass that is attached to rocks as a flat, zigzag-shaped band.
The dorsal surface has expandable, compound, pointed papillae. The head has two pairs of curled tentacles, the front pair is both chemosensory and tactile and is used to "smell" chemicals in the water and to feel objects.
The pair behind the eyes, the rhinophores, are the main chemosensory organs used to "smell" food.
When there is danger or disturbance, Dolabrifera brazieri emits a white liquid.
Synonym: Dolabrifera jacksoniensis Pilsbry, 1896