Loch of Stenness SAC

Status: Designated


Site overview

This site is made up of coastal lagoons, including the largest brackish lagoon in the UK. The soft mud here supports mats of green algae and large numbers of burrowing worms. In the more salty areas of the lagoon, clumps of mussels live. 

MPA Type

Special Area of Conservation

Special Areas of Conservation (SACs) are strictly protected sites designated under European legislation. They contribute both to the UK MPA network and set up to protect habitat types and species considered to be most in need of conservation at a European level (excluding birds).

Designation date

1 October 1996

Surface Area

7.93 km2 (3.06 mi.2)


22.35 km (13.89 mi.)

  • Lagoons (Coastal lagoons)

Did you know?…

An area over 9 times the size of Wales is now in marine protected areas in the UK, but less than 1% is considered by MCS scientists to be well managed

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