A schoolgirl was rescued by Prince William after she was swept out to sea while trying to help her sister.
The second-in-line to the throne piloted the Sea King helicopter while his RAF team-mates winched the 16-year-old to safety off Silver Bay, Anglesey.
After the teenager was safely aboard, the team began searching for her 13-year-old sister, only to be told she was already safely ashore.
A rescuer said: "She had scrapes, was very cold, shocked and had swallowed water. She had been in serious difficulties and was very lucky."
The girls had been body boarding when they encountered a rip tide and got into difficulty. Both were taken to hospital for checks after the incident.
The RAF said it was one of its 'fastest and shortest' operations, taking 38 seconds to arrive at the scene.
Flight Lieutenant Wales, as William is known in the RAF, was on duty when his crew was called out from the nearby RAF Valley airbase.
Two surfers waved and pointed to the rocks where the girl was in difficulty to catch the rescuers' attention.
William qualified as a RAF Search and Rescue pilot in September 2010. He qualified as a Captain in June.