The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.
Range & Status
This species is readily confused with Mytilus edulis and occurs intertidally on open coasts in high energy environments around south-west England, from south Devon, Cornwall and north Devon to south-west Wales. It also occurs on the southern and western coasts of Ireland and on the Sussex coast. On the coast of France it extends westward from Cherbourg and south to the Mediterranean. This Mediterranean Mussel is most commonly found on the north coast of Cornwall, especially in the Padstow area.
I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.
The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.