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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.

Lagenorhynchus acutus - Atlantic White-sided Dolphin

Range & Status

This species inhabits cool temperate and sub-arctic waters of the North Atlantic, occurring over a large part of the northern European continental shelf. It is common in UK and Irish waters, with the greatest concentrations in the central and northern North Sea across to north-west Scotland. It also occurs occasionally in southern Ireland, the Irish Sea and the western Channel. (UK Biodiversity Group, 1999.)


Recorded in the region in 1970 (1), 1974 (4), 1981 (1), 1984 (1), 1994 (3), 2003 (1).


No sightings of this species are recorded.


It is listed as of Least Concern. (Hammond et al ., 2008. Lagenorhynchus acutus . In: IUCN 2008. 2008 IUCN Red List of Threatened Species. . Downloaded on 18 March 2009.) It is a UK Biodiversity Action Plan priority species and is protected under ASCOBANS and the Bonn Convention. A UK Biodiversity Grouped Plan species.


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.

Cornish Biodiversity Network. 2017.