25 Steromphala cineraria with unpigmented body. Menai Strait, Wales. April 2011.

25 Steromphala cineraria with unpigmented body. Menai Strait, Wales. April 2011.

White ground colour with no dark pigment. White cephalic tentacle without usual dark rings. Yellow snout without any dark marks. White epipodial tentacle (visible at rear) without usual dark rings. Cephalic lobes between cephalic tentacles without dark pigment.