This slug has a series of dark red-brown spots on a background of opaque white to pale or rich dark red-brown. There is a white line around the body and it has chocolate brown rhinophores ("antennae"), the gill and foot is white. A very distinctive animal. It is smooth and soft to the touch.

Rocky reefs in semi-sheltered to open shores. Under boulders durring the day.

Sponges,

When irritated it discharges a thick milky white fluid. An uncommon slug, becoming rarer.

Coastal Marine Inverts Vol 1
Photo Credit: Rod Morris. Photos available at www.rodmorris.co.nz