Aeolidiella glauca
Body translucent white and pale orange with scattered, small light freckles. No white ‘Y’ or triangular mark on head. Cerata not flattened; have uniform diameter for most of length, colour varies with diet. Apices of cerata are white. Rhinophores translucent orange with no dark pigment marks. Internal eyes visible at base of rhinophores. Distance between oral tentacles at base about same as thickness of single tentacle base.
Length 23 mm. Menai Strait, Wales. April 2011.