Mid St George's Channel

Site overview: This site is located in the Irish Sea, around 23 km offshore from the Llyn peninsula in Wales. It is situated between Irish offshore waters to the west and Welsh territorial waters to the east.
It is a 761km square area rich in wildlife because of its position, with a constant supply of nutrient rich Atlantic water meeting the warmer, shallower Irish Sea. The seabed is largely sand and gravel creating an environment that allows annelid worms, clams and crustaceans to thrive. Sea firs, anemones and sponges are just some of the delicate creatures that are also found here amongst the cobbles. In the waters above, passing whales and dolphins use these waters as a feeding ground. There are a small number of UK vessels known to fish within this area (the estimated cost of this site for these fishers equates to £300 per year). However there is much more fishing taking place in this area from France and the Republic of Ireland.

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


52° 39' 35" North,
5° 16' 1" West

Surface Area

760.70 km2
(293.71 mi.2 )


118.50 km
(73.64 mi.)

Iconic features protected by this site