Wyville Thomson Ridge SAC

Status: Designated


Site overview

This site gets its name from a rock ridge situated in the Atlantic Ocean at the northern end of the Rockall Trough. It is approximately 20km wide and 70km long. It is thought to have been formed by the ploughing movement of icebergs through the seabed at the end of the last ice age. Sponges, cup and soft corals, featherstars, brittlestars, sea urchins, sea cucumbers and sea spiders all live here. 

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 August 2010

Surface Area

1,740.63 km2 (672.06 mi.2)


211.73 km (131.56 mi.)

  • Reefs

    Areas where the bedrock, stable boulders and cobbles or structures created by animals arise from the surrounding seabed. They attract and provide a home to a huge variety of plant and animal life.

Did you know?…

Over 170 parliamentarians from across the political spectrum signed up to our Marine Charter calling for a network of ‘marine protected areas’ in UK Seas

Over half a million people have voiced their support for ‘marine protected area’ designation in the UK through our campaigns

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