Pagham Harbour is a coastal nature reserve located in West Sussex, England. It is known for its diverse habitats, including mudflats, salt marshes, and lagoons, which support a variety of wildlife. The area is particularly important for birdwatching, attracting many migratory birds throughout the year. The harbour is part of the Pagham Harbour Local Nature Reserve and is managed by Natural England. Visitors can enjoy walking trails and observation points, making it a popular destination for nature enthusiasts. The reserve plays a crucial role in conservation efforts, helping to protect the unique ecosystems found in the region.