1. Onchidoris bilamellata. Juvenile, length 7mm. Dark brown gills and basal half of rhinophore. Dark brown dorsal panel stops behind rhinophores, leaving a pale area in front. Low water spring tide, Mersey Estuary. September 2010.
2. Onchidoris bilamellata. Juvenile, length 7mm. Dark brown gills and basal half of rhinophore. Dark brown dorsal panel stops behind rhinophores, leaving a pale area in front. Low water spring tide, Mersey Estuary. September 2010.

Onchidoris bilamellata. Juvenile, length 7mm. Dark brown gills and basal half of rhinophore. Dark brown dorsal panel stops behind rhinophores, leaving a pale area in front. Low water spring tide, Mersey Estuary. September 2010.