Allt Penycoed Stream Section is a Site of Special Scientific Interest in Carmarthenshire, Wales. It is protected by law and has been designated as an SSSI since April 1985 in an attempt to protect rare or unique features or species within it. The site has an area of 1.62 hectares and is managed by Natural Resources Wales.
Arfordir Abereiddi is a Site of Special Scientific Interest (SSSI) in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 2002 in an attempt to protect its fragile biological and geological elements. The site has an area of 63.74 hectares and is managed by Natural Resources Wales.
Allt Pontfaen - Coed Gelli-fawr is a Site of Special Scientific Interest in Pembrokeshire, South Wales which starts at Allt Pontfaen and finishes at Coed Gelli-fawr. It has been designated as a Site of Special Scientific Interest since January 1954 in an attempt to protect its fragile biological elements. The site has an area of 73.12 hectares and is managed by Natural Resources Wales.
Cwm Dewi is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 2010 in an attempt to protect its important geological elements. The site has an area of 22.02 hectares and is managed by Natural Resources Wales.
Dwrhyd Pit is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 1957 in an attempt to protect its fragile geological elements. The site has an area of 0.18 hectares and is managed by Natural Resources Wales.
Esgyrn Bottom is a Site of Special Scientific Interest in Pembrokeshire, South 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. The site has an area of 49.9 hectares and is managed by Natural Resources Wales.
Felin Llwyngwair is a Site of Special Scientific Interest near Newport in Pembrokeshire, South Wales. It was designated a SSSI in October 2000 to protect its fragile biological elements. The site has an area of 0.01 hectares and is managed by Natural Resources Wales.
Jeffreyston Pastures is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 1996 in an attempt to protect its fragile biological elements. The site has an area of 15.72 hectares and is managed by Natural Resources Wales.
Newport Cliffs is a Site of Special Scientific Interest lying a little to the north of Newport in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 1954 in an attempt to protect its fragile biological elements. The site has an area of 48.23 hectares and is managed by Natural Resources Wales.
Park House Outbuildings, Stackpole is a Site of Special Scientific Interest in Pembrokeshire, South Wales, 4 kilometres (2.5 mi) south of Pembroke, and is of special interest as the largest known nursery roosts of lesser horseshoe bats Rhinolophus hipposideros in Pembrokeshire. It has been designated as a Site of Special Scientific Interest since February 1998 in an attempt to protect its fragile biological elements. The site has an area of 0.01 hectares and is managed by Natural Resources Wales.
Portheiddy Moor is a Site of Special Scientific Interest a little to the east of Abereiddy 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.
Robeston Wathen Quarries is a Site of Special Scientific Interest in Pembrokeshire, South Wales, immediately to the north of the village of Robeston Wathen. It has been designated as a Site of Special Scientific Interest since January 1967 in an attempt to protect its fragile geological elements. The site has an area of 1.64 hectares and is managed by Natural Resources Wales.
Stackpole Quay - Trewent Point is a cliff on the Castlemartin Peninsula of South Pembrokeshire, South Wales and is a Site of Special Scientific Interest (SSSI). It has been designated as a SSSI since January 1977 in an attempt to protect its fragile biological and geological elements. The site has an area of 64.15 hectares and is managed by Natural Resources Wales.
Strumble Head - Llechdafad Cliffs is a Site of Special Scientific Interest (SSSI) in Pembrokeshire, South Wales. It has been designated as a SSSI since January 1954 in an attempt to protect its fragile biological and geological elements.
Trefeiddan Moor is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 1966 in an attempt to protect its fragile biological elements. The site has an area of 21.61 hectares and is managed by Natural Resources Wales.
Fferam Uchaf is a Site of Special Scientific Interest in Anglesey, North Wales, for its exposures of Llanvirn (Ordovician) rocks. It has been designated as a Site of Special Scientific Interest since October 2001 in an attempt to protect its fragile Geological elements. The site has an area of 1.05 hectares, is managed by Natural Resources Wales, and is 1.5 km (0.93 mi) north-east of Llanddeusant.
Henborth is a Site of Special Scientific Interest in Anglesey, North Wales. It has been designated as a Site of Special Scientific Interest since October 1989 in an attempt to protect its fragile geological elements. The site has an area of 10.96 hectares and is managed by Natural Resources Wales.
Llanbadrig - Dinas Gynfor is a Site of Special Scientific Interest 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 geological elements. The site has an area of 26.49 hectares and is managed by Natural Resources Wales.
Afon Seiont is a Site of Special Scientific Interest in West Gwynedd, Wales. It is protected by law and has been designated as a Site of Special Scientific Interest since July 1997 in an attempt to protect rare or unique features or species within it. The site has an area of 6.4 hectares and is managed by Natural Resources Wales. This site is designated due to its geological qualities. In Wales, geological sites range from quarries to rocky outcrops and massive sea-cliffs. 30% of SSSIs in Wales are notified for geological and geomorphological features.
Smarts Quarry is a Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales, designated in 1987 for its geological features.
