These limpet gastropods are often abundant on intertidal rocky shores where they graze surfaces using specially hardened teeth capped with iron oxide. Do not confuse with similarly shaped shells of Siphonariidae. This species is highly variable in shape and colour pattern.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
