Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

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.

Gastrochaena dubia - Flask-shell

Range & Status

A rare and often solitary species found burrowing in sand, sandstone or limestone on the lower shore and shallow sublittoral. It is recorded along the south coast from Cornwall to East Sussex, also from south-west Wales, western Ireland and the Channel Islands. Elsewhere its range extends southwards to the Mediterranean. There are several old records for Cornwall and two relatively recent ones from the Isles of Scilly and St. Mawes. It was found to be fairly common in deep water off the Cornish coast albeit outside the 12-mile limit. (Walker, 1991).


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.