Blue-rayed limpet – Patella pellucida
Photo and text: Vebjørn Karlsen
The blue-rayed limpet can be found on the eastern Atlantic coast from Portugal up to Norway and Iceland. For some strange reason it cannot be found outside Belgium and the Netherlands and not in the Baltic Sea. It lives primarily on kelp but also on seaweed and rocks. Can be found down to 30 m. It is very common here in Saltstraumen.
It can grow up to 15 mm and is easily recognized by its translucent amber colour and its blue spots running in lines across the top of the shell. The blue-rayed limpet is a hermaphrodite and reproduction happens during the winter when it realizes eggs and sperms into the water. The fertilized maggots swim around free for a short time before they found rock or some kelp.