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
Confined to the south-western coasts of Europe, including south-west Britain. It is local, but certainly under-recorded.
Widely reported when sought.
Habitat & Ecology
An intertidal species, living primarily deep in rock crevices well down the shore in the
Fucus zone and very occasionally under rocks on firm silt or gravel.
Its situation is generally safe from human pressures. Local disturbance of isolated rocks and stones is damaging, as is oil pollution.
No active measures probably needed.
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.