Tags: Site Of Special Scientific Interest.
Portheiddy Moor is a Site of Special Scientific Interest (or SSSI) in Pembrokeshire South Wales. It has been designated as a Site of Special Scientific Interest since July 1987 in an attempt to protect its fragile biological elements: a diverse example of grazed fen-meadow with springs swamp and tall fen amongst extensive flushed communities. The site has an area of 9.5 hectares and is managed by Natural Resources Wales.