A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I".
Weston-in-Gordano SSSI is a 12.55 hectare geological Site of Special Scientific Interest near the village of Weston in Gordano, North Somerset, notified in 1993.
Many parts of Wales are protected areas, according to a number of designations. They include three national parks, and five Areas of Outstanding Natural Beauty.
Beddmanarch–Cymyran is a site of special scientific interest (SSSI) on the Welsh island of Anglesey extending to just over 900 hectares, and centred on the Cymyran Strait. It was first notified in 1961 for its coastal botanical and ornithological interest. The site is also a marine protected area as it includes intertidal areas and contains marine components.
Clegir Mawr is a Site of Special Scientific Interest (SSSI) in the community of Cylch-y-Garn in the north-west of the island of Anglesey, Wales. It is a stony coastal headland with an area just under 10 hectares and has been designated principally because of the occurrence of the spotted rock-rose which is a nationally rare plant and also the county flower of Anglesey.
Corsydd Llangloffan is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since February 1992 in an attempt to protect its fragile biological elements. The site has an area of 56.7 hectares and is managed by Natural Resources Wales.
Dyffryn Gwaun 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 1954 in an attempt to protect its fragile biological elements. The site has an area of 25.36 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.
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.
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.
Waun Fawr, Puncheston is a Site of Special Scientific Interest in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since March 1995 in an attempt to protect its fragile biological elements. The site has an area of 8.26 hectares and is managed by Natural Resources Wales.
Wyndrush Pastures is a Site of Special Scientific Interest south-east of the village of Redberth, just south of the A477, and around five km (3.1 mi) to the north-west of the coastal town of Tenby in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since October 1999 in an attempt to protect its fragile biological elements. The site has an area of 45.5 hectares and is managed by Natural Resources Wales.
Cors Bodwrog is a mesotrophic mire and a Site of Special Scientific Interest in Anglesey, North Wales. It has been designated as a Site of Special Scientific Interest since January 1961 in an attempt to protect its fragile biological elements. The site has an area of 87.28 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.
Glannau Rhoscolyn is a Site of Special Scientific Interest in Anglesey, North Wales, and extends along the west coast of Holy Island, Anglesey for approximately 6.5 km (4.0 mi). It has been designated as a Site of Special Scientific Interest since January 1961 in an attempt to protect its fragile biological and geological elements. The site has an area of 145.49 hectares and is managed by Natural Resources Wales.
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.
Llyn Bodgylched is a Site of Special Scientific Interest in Anglesey, North Wales, to the west of Beaumaris. It has been designated as a Site of Special Scientific Interest since January 1968 in an attempt to protect its fragile biological elements, mainly a swamp. The site has an area of 16.37 hectares and is managed by Natural Resources Wales.
Aber Taf is a large Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales, and forms part of the Carmarthen Bay and Estuaries Special Area of Conservation.
Milford Haven Waterway, is a Site of Special Scientific Interest (SSSI) on Milford Haven Waterway in Pembrokeshire, South Wales, designated since 2002. The site is protected for a wide range of reasons, including its geology, marine environment and ecosystems, and to protect a diversity of flora and fauna.
