A teenager (14) was rushed to hospital with critical head injuries after a sailing accident off the coast of Cork.
The boy was rushed to Cork University Hospital where his condition is believed to be improving.
It is understood that the accident occurred off the coast of Skibbereen in Co Cork on Saturday morning when a sailing boom hit the youngster in the head.
A coastguard operation was overseen by Valentia Coastguard at the request of the National Ambulance Service.
Rescue 117 helicopter was tasked to attend the scene from Waterford at 11.20am on Saturday morning.
Units from Schull coastguard and Toe Head coastguard were involved in the operation.
Meanwhile, in Dublin a man (53) was rushed to hospital with serious head injuries after a kite-surfing accident off the coast of Sutton.
The man was kite-surfing when he was pulled into the sea wall and the alarm was raised around 4pm on Saturday evening.
It is hoped that he will make a full recovery.
In a third separate incident a coastguard helicopter from Shannon was dispatched to Inis Mór when a female diver taking part in the red Bull Cliff Diving event suffered spinal injuries.
The helicopter brought the woman to hospital in Galway city, arriving at 12.15 on Saturday