Young specimen, 8 mm long, with opaque white dorsal line not yet extending to the full length of the tail. Slender, almost linear, cerata about as long as the width of the body, held at varying angles across each other.
1: wrinkled, translucent whitish, slightly yellowish rhinophores.
2: oral tentacles arise from the upper surface of the head.
3: internal pink jaw a forward pointing ‘V’.
4: propodial tentacle protruding about 17% of body width.
Menai Strait, Wales. September 2011.