"This is a very interesting individual. The colour of the rhinophores (basal part pink and apical part black) indicates it cannot be Phyllidiella pustulosa (in which the rhinophores are always entirely black)."
Comment from Richard Willan
This is a very interesting individual. The colour of the rhinophores (basal part pink and apical part black) indicates it cannot be Phyllidiella pustulosa (in which the rhinophores are always entirely black).