Cerberilla bernadettae is a species of sea slug, an aeolid nudibranch, a marine heterobranch mollusc in the family Aeolidiidae.

[3] All Cerberilla species have a broad foot and the cerata are numerous, arranged in transverse rows across the body.

There are dark brown lines forming an inverted V on the front of the head.

The cerata have a black mark on the upper surface just below the opaque white tip.

The long oral tentacles have a white band on the upper surface and yellow-orange tips.