Treshnish Isles

Site overview: These isles are a remote chain of uninhabited islands and skerries situated in south-west Scotland. They support a breeding colony of grey seals, which make up just under 3% of annual UK pup numbers.

Designation Status
Last Updated
6 June 2017
MPA Type
Special Area of Conservation
MPA Purpose
areas which have been identified as best representing the range and variety within the European Union of habitats and (non-bird) species listed on Annexes I and II to the Directive


56° 30' 3" North,
6° 24' 26" West

Surface Area

19.61 km2
(7.57 mi.2 )


19.40 km
(12.06 mi.)

Iconic features protected by this site


  • Reefs


  • Grey seal (Halichoerus grypus)