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
A circum-arctic and north temperate species, also found on coasts further south where local deep water temperatures have a maximum high of 15\fs10 o C. Recorded from west coasts of Scotland and Isle of Man, Cornwall and Channel Islands; recorded from the Isles of Scilly and offshore at Looe and Porthallow on the Lizard Peninsula. A benthic species, mainly found in the shallow sublittoral in clear waters with little sand (Crisp et al ., 1967) that are subject to current movement (Knight-Jones & Knight-Jones, 1977); in transparent tubes forming a coil of approximately 2.5mm diameter on stones and shells; can be locally common. Long term increase in local sediments or suspended matter or increases in summer water temperature may threaten local populations.
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.