Sites of Special Scientific Interest

SSSIs – Sites of Special Scientific Interest – are the most important sites for Wales’ natural heritage. They are highly protected to safeguard the range, quality and variety of habitats, species and geological features in all parts of Wales. They are the cornerstones of conservation work, protecting the core of our natural heritage.

There are more than 1,000 SSSIs in Wales, covering about 12% of the country’s surface area.  They are notified by CCW.

Why are SSSIs important?

Many SSSIs support wildlife and habitats which are internationally important. Some are also designated under other schemes too, recognising them as the very best examples of natural heritage sites in Wales, the UK and Europe.

Natural sites include coastline, freshwater, upland and lowland sites and range from small fens or sand dunes to woodlands and vast reaches of mountain. They contain important types of land, plants and wildlife. Geological sites range from quarries to rocky outcrops and massive sea-cliffs.

How SSSIs are protected

Each SSSI is protected by law from damage through development or unsuitable management or activities.  They are also protected through working partnerships and agreements with owners and others who use the sites.

SSSIs and their owners

CCW must tell landowners exactly where every SSSI is and explain why it is protected. CCW co-operates with the owners and offers advice, information and, sometimes, financial support.