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.
Habitat & Distribution
This species has a preference for muddy sand and coarser deposits of shell with small stones at depths between 20-100m. A southern species at its northern limit in British waters. Once thought to be restricted to several small populations in the western English Channel it has, in recent years been found to be somewhat more widespread. It is now known from the eastern end of the English Channel as far east as Kent, south-west Wales, the Irish Sea (Isle of Man/Cumbria), north-west Cornwall and south-west Ireland. Elsewhere it is known from the Canary Islands and Madeira.
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.