Pagham Harbour is a natural harbour in West Sussex. It is south of the city of Chichester and near the towns of Pagham and Selsey.
Whether it is a bay or estuary is a debateable point.
It is a biological Site of Special Scientific Interest, a Local Nature Reserve, a Special Protection Area, and a Ramsar site. Its shingle spit is further designated a Geological Conservation Review site. In spring or autumn rare migratory birds can often be seen. Pagham Harbour Local Nature Reserve covers 1,450 acres of salt marsh, mudflats, farmland, copses, lagoons, reed beds and shingle beaches.
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