1. Rostanga rubra. Line of buoyant faeces being ejected from brown tubular anus. Erect gills arise from three prone brown arms originating from base of anus. Mantle orange with sparse scattered reddish brown spots. Menai Strait, Wales. February 2013.
2. Rostanga rubra. Line of buoyant faeces being ejected from brown tubular anus. Erect gills arise from three prone brown arms originating from base of anus. Mantle orange with sparse scattered reddish brown spots. Menai Strait, Wales. February 2013.

Rostanga rubra. Line of buoyant faeces being ejected from brown tubular anus. Erect gills arise from three prone brown arms originating from base of anus. Mantle orange with sparse scattered reddish brown spots. Menai Strait, Wales. February 2013.