The Moors, Bishop's Waltham is a Site of Special Scientific Interest. It is a nationally (if not a European) significant tract of alkaline wetland and open waters located south of the Chalk outcrop in southern Hampshire at the head of River Hamble displaying a good diversity of habitat types, plant and animal communities and rare species. As a result, not only is the majority of the site designated as a Site of Special Scientific Interest (SSSI) under the UK Wildlife and Countryside Act, but also as a Nature Conservation Review (NCR) site, in recognition of its special national interest.