Studland beach is 2.5 miles (4kms) of wide, soft, pale sand with cool shallow water on one side and National Park grassy dunes and heathland on the other. Studland is a catch-all name but locals know the beaches as Shell Bay (near the ferry), thru Middle Beach and ending at Knoll Beach, near the grand Knoll Hotel. At Knoll beach there are beach huts, a café and car parking.
Nudists, mostly male, hang around one section of the dunes but are reasonably discreet and inoffensive.
The Southwest Coast Path starts at the ferry and runs along Studland beach, up to Old Harry Rocks and over the Purbeck Hills to Swanage, then another 640 miles at the last count…
And one more thing: unlike many best beaches in England, Studland is easy to reach via the Sandbanks ferry (across Poole Harbour neck), with car parks at various locations.