A 10-year-old girl has been sexually assaulted by a man while playing on Studland Beach in Swanage.
The assault happened at around 6pm on Friday while the girl played in sand dunes.
The man is described as between 50 and 70 years of age with brown hair and a hair lip.
He was wearing a green jacked and sunglasses and had a backpack.
Anyone who can help find him should ring Dorset Police on 101.