1. Janolus hyalinus. Length 15mm. Translucent cerata shade hyaline green basally. Cerata extend across anterior and posterior to completely surround brown dorsum. Floating in water’s edge, LWS, Menai Strait, Wales. April 2011.
2. Janolus hyalinus. Length 15mm. Translucent cerata shade hyaline green basally. Cerata extend across anterior and posterior to completely surround brown dorsum. Floating in water’s edge, LWS, Menai Strait, Wales. April 2011.

Janolus hyalinus. Length 15mm. Translucent cerata shade hyaline green basally. Cerata extend across anterior and posterior to completely surround brown dorsum. Floating in water’s edge, LWS, Menai Strait, Wales. April 2011.