PRINCE William last night led a rescue mission to save a 16-year-old girl who got into difficulties off the Welsh coast after being alerted by surfers.
The Duke of Cambridge piloted the RAF Sea King helicopter while his colleagues winched the teenager to safety from the off Silver Bay, Anglesey.
The schoolgirl, thought to be from Hertfordshire, had been trying to help her 13-year-old sister and both were taken to hospital in Bangor for a check-up.
After pulling the older girl aboard, the RAF team started searching for her younger sister before they were told she was safe on the shore.
A rescuer said : "She had scrapes, was very cold, shocked and had swallowed water. She had been in serious difficulties and was very lucky."
Earlier yesterday, the helicopter had been called to people thought to be in trouble in the sea at Rhosneigr but they managed to reach the shore safely.
Prince William qualified as an RAF search and rescue captain at the end of May after serving as a co-pilot.
After his wedding to the Duchess of Cambridge, the couple set up home in Anglesey where No 22 Squadron is based.
His duties have prevented him from carrying out royal engagements and he was absent at the Closing Ceremony of London 2012.
But earlier this week, it emerged his superiors were looking at ways of allowing him to continue working while making time for more appearances in his royal capacity.
The Prince may be allowed to work as a part-time helicopter instructor rather than working shift patterns with the rest of the rescue crews.
His wife and brother have stood in for more senior members of the Royal Family on recent occasions.