North Solent is a 1,186.7-hectare (2,932-acre) biological and geological Site of Special Scientific Interest along the north bank of the Solent between East End and Calshot in Hampshire.

[3] Part of it is in North Solent National Nature Reserve[4] and two areas are Geological Conservation Review sites.

[10] This site has diverse habitats, including mudflats, saltmarshes, beaches, marshes, grassland and woods.

It has rich insect populations and is of international importance for its wintering and migratory wildfowl and waders.

Stone Point is important for studies of Quaternary stratigraphy, and it has many fossils dating to the Eemian interglacial, around 120,000 years ago.