Deben Estuary SSSI is a 981.1-hectare (2,424-acre) biological Site of Special Scientific Interest (SSSI) covering the River Deben and its banks 12 kilometres from its mouth north of Felixstowe to Woodbridge in Suffolk. It is a Ramsar internationally important wetland site and a Special Protection Area under the European Union Directive on the Conservation of Wild Birds. It is also in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty. It partly overlaps two geological SSSIs, Ferry Cliff, Sutton and Ramsholt Cliff.
Alde–Ore Estuary is a 2,534 hectare biological and geological Site of Special Scientific Interest which stretches along the Suffolk coast between Aldeburgh and Bawdsey, and also includes parts of the Alde, Ore and Butley Rivers. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty, and is a Grade I Nature Conservation Review site, a Special Area of Conservation, a Ramsar internationally important wetland site, and a Special Protection Area under the European Union Directive on the Conservation of Wild Birds. It includes two Geological Conservation Review sites, "Orfordness and Shingle Street" and "The Cliff, Gedgrave", and two nature reserves managed by the Suffolk Wildlife Trust, Alde Mudflats and Simpson's Saltings. The coastal part of the site is Orfordness-Havergate, a National Nature Reserve, and Orford Ness is managed by the National Trust, while Havergate Island is managed by the Royal Society for the Protection of Birds.
Crag Farm Pit, Sudbourne is a 4.8-hectare (12-acre) geological Site of Special Scientific Interest east of Sudbourne in Suffolk. It is a Geological Conservation Review site, and within the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Gedgrave Hall Pit is a 0.65-hectare (1.6-acre) geological Site of Special Scientific Interest in Gedgrave, south of Saxmundham in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Neutral Farm Pit, Butley is a 1.1-hectare (2.7-acre) geological Site of Special Scientific Interest in Butley, east of Woodbridge in Suffolk. It is a Geological Conservation Review site, and is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Red House Farm Pit is a 0.5-hectare (1.2-acre) geological Site of Special Scientific Interest east of Wickham Market in Suffolk. It is a Geological Conservation Review site, and in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Richmond Farm Pit, Gedgrave is a 0.57-hectare (1.4-acre) geological Site of Special Scientific Interest south-west of Orford in Suffolk. It is a Geological Conservation Review site, and is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Valley Farm Pit, Sudbourne is a 0.5-hectare (1.2-acre) geological Site of Special Scientific Interest north of Orford in Suffolk. It is a Geological Conservation Review site, and in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Bawdsey Cliff is a 17.4-hectare (43-acre) geological Site of Special Scientific Interest north-east of Felixstowe in Suffolk. It is a Geological Conservation Review site, and is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Aldeburgh Brick Pit is a 0.9-hectare (2.2-acre) geological Site of Special Scientific Interest in Aldeburgh in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Aldeburgh Hall Pit is a one hectare geological Site of Special Scientific Interest in Aldeburgh in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Crag Pit, Aldeburgh is a 0.2-hectare (0.49-acre) geological Site of Special Scientific Interest in Aldeburgh in Suffolk. It is a Geological Conservation Review site, and within the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Round Hill Pit, Aldeburgh is a 0.5-hectare (1.2-acre) geological Site of Special Scientific Interest in Aldeburgh in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Sudbourne Park Pit is a 1.1-hectare (2.7-acre) geological Site of Special Scientific Interest between Orford and Chillesford in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Pakefield to Easton Bavents is a 735.4-hectare (1,817-acre) biological and geological Site of Special Scientific Interest which stretches along the Suffolk coast between Lowestoft and Southwold. It includes three Geological Conservation Review sites, and part of the Benacre National Nature Reserve. An area of 326.7 hectares is the Benacre to Easton Bavents Lagoons Special Area of Conservation, and 470.6 hectares is the Benacre to Easton Bavents Special Protection Area under the European Union Directive on the Conservation of Wild Birds. The site is also partly in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Crag Pit, Sutton is a 0.7-hectare (1.7-acre) biological Site of Special Scientific Interest north of Shottisham in Suffolk. It is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Ferry Cliff, Sutton is a 2.8-hectare (6.9-acre) geological Site of Special Scientific Interest in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Ramsholt Cliff is a 2.1-hectare (5.2-acre) geological Site of Special Scientific Interest north-west of Ramsholt in Suffolk. It is a Geological Conservation Review site, and it is in the Suffolk Coast and Heaths Area of Outstanding Natural Beauty.
Rockhall Wood Pit, Sutton is a 5.3-hectare (13-acre) geological Site of Special Scientific Interest west of Shottisham in Suffolk. It is a Geological Conservation Review site both for its quaternary and neogene deposits.
