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 recently been revalidated as being a separate species from the Tompot Blenny Parablennius gattorugine and, due to the confusion over identification, has probably been somewhat under-recorded in the British Isles. It is fairly widespread on exposed western coasts of Ireland and Scotland. There is also a record from Northern Ireland. In Cornish waters it has been found on the Manacles Rocks off the Lizard Peninsula and in at least five sites in the Isles of Scilly. Elsewhere it is known south to the Atlantic coasts of Spain and Portugal, the Mediterranean, Madeira and the Canary Islands.
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.