This nudibranch seems to exist in two forms, one with long cerata and the other with short cerata. The cerata are arranged in up to 12 neat clusters with 4 cerata per cluster. The form with short cerata is almost colourless, with yellow-brown digestive gland and faint creamy rings on the cerata. The form with long cerata, on the other hand, has bluish-white pigment over the ceratal surfaces, and yellowish tips to the cerata, oral tentacles and rhinophores. The foot is broad, with well-developed propodial tentacles. In mature specimens the rosette-like structures of the ovotestis show clearly through the transparent back. Grows to about 23mm in length.