1. Janolus hyalinus. Length 15mm. Brown dorsum marked with opaque white flecks which concentrate in places into patches of white; two in front of rhinophores resemble false eyes. Floating in water’s edge, LWS, Menai Strait. April 2011.
2. Janolus hyalinus. Length 15mm. Brown dorsum marked with opaque white flecks which concentrate in places into patches of white; two in front of rhinophores resemble false eyes. Floating in water’s edge, LWS, Menai Strait. April 2011.

Janolus hyalinus. Length 15mm. Brown dorsum marked with opaque white flecks which concentrate in places into patches of white; two in front of rhinophores resemble false eyes. Floating in water’s edge, LWS, Menai Strait. April 2011.