Glannau Penmon

Glannau Penmon - Biwmares

Site of Special Scientific Interest
Location within Wales
Location	West Gwynedd
Grid reference	SH6211778674
Coordinates	53°17′13″N4°04′12″W / 53.287°N 4.070°W / 53.287; -4.070
Interest	Biological and Geological
Area	170.87 hectares (422.2 acres)
Notification	1957

Glannau Penmon - Biwmares is a Site of Special Scientific Interest (or SSSI) in Anglesey, North Wales. It has been designated as a Site of Special Scientific Interest since January 1957 in an attempt to protect its fragile biological and geological elements. ^[1] The site has an area of 170.87 hectares (422.2 acres) and is managed by Natural Resources Wales.

Type and features

This SSSI has been notified as being of both geological and biological importance and the following are considered to be of Special Scientific Interest:

1. Communities of animals and plants of mixed sediment and of muddy gravel shores.
2. Four communities of restricted national distribution:

• Piddocks burrowed into lower shore limestone overgrown with serrated wrack.
• Sponges, sea-squirts and serrated wrack on tide-swept lower shore rock.
• Sponges, sea-squirts, red seaweeds and serrated wrack found on a tideswept mixture of mud, sand, cobbles and pebbles.
• Lower shore muddy gravel inhabited by a diverse group of small marine

worms.
3. Two species-rich communities of marine plants and animals:

• Sponges, sea-squirts and sea-mats on bedrock overhangs.
• Serrated wrack and various animals under lower shore boulders.

4. A succession of ice-age sediments, exposed in the soft coastal cliffs and foreshore at Lleiniog

See also

• List of Sites of Special Scientific Interest in Isle of Anglesey

References

1. Countryside Council for Wales website (Natural Resources Wales since 2013); Archived January 1, 2014, at the Wayback Machine accessdate: 30 December 2013

External links

• Natural Resources Wales website