1. Cuthona caerulea. Length 4mm. Olive green digestive gland. Only vestiges of orange bands below blue band. Apical orange is internal orange cnidosac plus orange surface pigment. LWS, Menai Strait, Wales. March 2012
2. Cuthona caerulea. Length 4mm. Olive green digestive gland. Only vestiges of orange bands below blue band. Apical orange is internal orange cnidosac plus orange surface pigment. LWS, Menai Strait, Wales. March 2012

Cuthona caerulea. Length 4mm. Olive green digestive gland. Only vestiges of orange bands below blue band. Apical orange is internal orange cnidosac plus orange surface pigment. LWS, Menai Strait, Wales. March 2012