Detectives hope a new digital recreation of a man's face could help them work out who he was - 18 months on from his highly decomposed body being found in a remote mid Wales reservoir.
The discovery of the man, who was wearing nothing but a £200 XXL wetsuit, sparked extensive police searches and international appeals, but no loved ones have ever come forward.
Specialists at a Liverpool university have now used photographs, dental records and CT scans of the man's skull to reveal he had "striking facial features", including an overbite.
Det Insp Anthea Ponting of Dyfed-Powys Police said she hoped the new images might finally solve the "unusual" mystery of the man in the wetsuit.
"Ultimately we're trying to do as much as we can to identify and return him to any family members that are out there who may be missing him," she said.
