1. Cuthona caerulea. Juvenile, length 3mm. Lateral white pigment. Grey-brown digestive gland almost hidden by fully developed three bands of orange and blue pigment. Interior of head rose pink. Tail lifted off substrate. LWS, Menai Strait, Wales. Sept. 2011
2. Cuthona caerulea. Juvenile, length 3mm. Lateral white pigment. Grey-brown digestive gland almost hidden by fully developed three bands of orange and blue pigment. Interior of head rose pink. Tail lifted off substrate. LWS, Menai Strait, Wales. Sept. 2011

Cuthona caerulea. Juvenile, length 3mm. Lateral white pigment. Grey-brown digestive gland almost hidden by fully developed three bands of orange and blue pigment. Interior of head rose pink. Tail lifted off substrate. LWS, Menai Strait, Wales. Sept. 2011