Slender, sinuous, translucent body, tinted orange-red, lacks any opaque pigment marks. Wrinkled, translucent rhinophores (1) coloured as body with distinct white apical zone. Head coloured as body but oral tentacles (2) paler. Pale mottling in contents of digestive gland in cerata (3) might be mistaken for surface pigment.

Menai Strait, Wales, September 2009.