41 Nucella lapillus. Entrapped by Mytilus. Mouth of Mersey Estuary, England. July 2014.

41 Nucella lapillus. Entrapped by Mytilus. Mouth of Mersey Estuary, England. July 2014.

Neighbours of assaulted Mytilus can counter attack of N. lapillus by attaching byssus threads to attacker and tightening them to pull it off its victim and turn it over so its foot is unable to grip the substrate to escape. It subsequently starves to death.