The Coast Guard rescued 15 people who got into difficulty swimming off the Donegal coast yesterday afternoon.
Ten people had to be airlifted from Magher- oarty pier to Letter- kenny Hospital for treatment.
The Irish Coast Guard said the Malin Head Coast Guard Rescue Coordination Centre received several calls alerting them to the incident and organised the rescue of the group.
"A Coast Guard Helicopter (R118) has airlifted 10 people to hospital in Letterkenny," it said in a statement.
"Fifteen people got into difficulty while swimming from Magheroarty pier this afternoon.
"The operation was co-ordinated by the Malin Head Coast Guard Rescue Coordination Centre, who received a number of emergency calls reporting persons in difficulty off the coast.
"On-scene support was also provided by the Tory Ferry Queen of Aran and Mulroy Coast Guard Unit.
"All 15 casualties were rescued and 10 were airlifted to Letterkenny Hospital by R118 Coast Guard Helicopter.
"A Coast Guard spokesperson acknowledged that this was a very lucky outcome and thanked the public for speedily alerting the Coast Guard Rescue services.
"The rescue helicopter crew deserve special commendation for their efficient."
It has been reported that the swimmers were from a local Irish college and had been taking part in a group activity.