North St George's Channel Extension

Site overview: Methane gas leaks out of the seabed here and forms carbonate slabs. They support a rich mixture of species including ross worms, sponges and horse mussels.
At risk:  ! This site is at risk, it currently is not designated as a Marine Protected Area - but should be. Decision makers in England will determine in 2017 if this site should be protected, make sure your voice is heard. Take action to ensure this site becomes a properly protected area.

Designation Status
Last Updated
6 June 2017
MPA Type
Marine Conservation Zone
MPA Purpose
to protect nationally important marine wildlife, habitats, geology and geomorphology


53° 26' 29" North,
5° 5' 59" West

Surface Area

1,383.85 km2
(534.31 mi.2 )


228.48 km
(141.97 mi.)

Iconic features protected by this site