TWO swimmers raising funds for Children in Need on Friday had to be rescued by Ramsey lifeboat after getting into difficulties.
They had been attempting to swim from the end of the stone pier at the entrance of Ramsey harbour to the beach when they were overcome by the cold sea.
The duo sought shelter between the pillars of the pier, only to be chilled further by a brisk wind and sea spray.
An RNLI spokesman said the tide was incoming and the pair had no hope of getting ashore.
A third charity swimmer had made it to the beach where a support team was waiting and it was realised the other swimmers were in real danger. The lifeboat was launched within minutes to rescue the stranded duo.
Members of Ramsey's volunteer RNLI crew recovered the two extremely cold casualties who were taken into the wheelhouse of the lifeboat and wrapped in blankets.
On arrival at the harbour the two swimmers were transferred to an ambulance and taken to hospital and were released later that evening.
They were shaken by their ordeal but otherwise unharmed.
Volunteer sea safety officer with Ramsey RNLI station Gordon Dickens said: "It was a happy ending for this well intentioned group and I wish them well in their efforts to raise money for their chosen charity.
"Around our coasts hundreds of swimmers enter the chilly winter sea and raise thousands of pounds for numerous charities, including the RNLI, which is a wonderful effort, but we also advise they don't put themselves at risk in the process.
"Swimmers are reminded never to under estimate the effects of a cold sea and subsequent heat loss through wind chill which can drop body temperature alarmingly in a short time.
"If planning an open water swim, our advice is to stay close to the shore where the water tends to be slightly warmer and wear a brightly coloured swimming cap and appropriate clothing so that you can be spotted in the waves.
"Most importantly, have continuous shore backup with warm towels and beverages.
"Supporters on the shore should never be afraid to make that vital emergency phone call if they think that any of their team is in difficulty.
"And finally, why not introduce yourselves to your local RNLI station? We can advise you on the sea temperature, weather forecast and local conditions and you can let us know when your event is planned."