|Primary inflows||Atlantic Ocean|
|Basin countries||United Kingdom|
|Max. length||2 km (1.2 mi)|
Whitesand Bay (Cornish: Porth Senan, meaning cove at Sennen) is a wide sandy bay near Land's End in west Cornwall, England, United Kingdom. It stretches for one mile between the headlands of Pedn-mên-du and Aire Point. and contains the village of Sennen Cove. It is also a landing point for the Atlantic Crossing 1 international telecommunications cable.
Whitesand Bay beach is popular with surfers. At high tide, the beach is divided into two: Sennen Cove Beach to the south (more popular for its size, facilities and surf schools), and Gwynver Beach to the north (more popular for its typically better surfing waves and walking distance of Trevedra Farm campsite). At the south end, at Sennen Cove, there are toilet facilities, a surf shop, a restaurant, and two car parks, one in a large field above the cliff, and another beside the beach. Dogs are banned on the beach from Easter Day to 1 October every year. The South West Coast Path runs along the dunes behind the beach.
The west facing bay is backed by a 38 hectares (94 acres) dune system which has developed from a limited supply of sand trapped within the shelter of the headlands, Pedn-mên-du (in the south) and Aire Point. The dunes contain the only British population of the shield bug Geotomus punctulatus which was first recorded here in 1864. G. punctulatus is a southern European species and associated with sparsely vegetated areas of loose sand and feeds on lady's bedstraw (Galium verum).
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