The nature park is "one of the best places to see the wildlife of Poole Harbour" and "a fabulous wildlife area at the commercial heart of Poole." Its salt marshes and mudflats attract a wide variety of wetland birds. The bay is divided into northern and southern areas by the
South West Main Line from
London to
Weymouth which crosses it on an embankment. The northern area is particularly sensitive due to the number of birds that use it to feed and roost. The nature park includes
Upton Country Park, with
Upton House and
Pergins Island, as well as trails that run around the bay. These include the
Castleman Trailway, Walk No. 6 of the
Poole Harbour Trails and the
Poole Heritage Cycle Route. South of the marina in the southwest corner of the bay is the
Hamworthy Creeks Nature Reserve. == Habitats ==