Detectives have issued a facial recreation from a human skull pulled from the North Sea last year in the hope of identifying the mystery woman.
The skull was discovered by a fishing boat around 150 miles off the coast of Peterhead, Aberdeenshire, on 15 May 2024.
Police Scotland said forensic work has confirmed the skull belongs to a woman who was under the age of 50.
Her death is being treated as unexplained as extensive enquiries continue.
Officers have issued an image of a facial reconstruction of the woman, created by experts at the University of Dundee, and hope that someone may recognise her.
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Detective Sergeant Emma Wright said: “Enquiries continue to identify this woman and establish what happened to her.
“We hope sharing this facial reconstruction will assist with our investigations and help reunite her with her family.”