Friends and family have paid tribute to the young man who died while kayaking in the Wicklow mountains.
Shane Murphy (21) was with a group on the Inchavore River when his kayak capsized and he got into difficulty.
His friends made distress calls to the Wicklow Mountain Rescue Team and the Glen Imaal Red Cross Mountain Rescue Teams who were then helped by the Irish Coast Guard.
Shane was eventually located and pulled from the river, and two of his fellow kayakers administered CPR before a rescue helicopter arrived.
However, he had already been underwater for around 45 minutes.
Shane's friends who had performed CPR were also taken aboard the helicopter and treated for hypothermia.
CPR continued to be administered, but he was pronounced dead at Tallaght Hospital shortly after midnight on Thursday.
Shane, from Baldoyle, north Dublin, was a second-year student at Colaiste Dhulaigh, where he was enrolled in the outdoor education programme.
The college principal said last night that it was "with deep regret" that they had learned of Shane's death.
"We are deeply shocked and saddened by the loss of Shane, and offer our sympathy to his family," said Mary Hickie.
Last night tributes poured in to Shane's Facebook page, with those who knew him best paying their respects.
One friend wrote: "Such a genuine, down-to-earth guy without a bad bone in his body."
Another friend posted: "Throughout all my years in song and dance you never failed to make me laugh, and you always had time for everybody. Rest in peace Shane."
It is believed that Shane's brother Stephen is flying back from Australia to be with his family.
Shane leaves parents Louise and Ray, siblings Alex, Leigh and Stephen and girlfriend Becky. His funeral Mass will take place at the Church of St Laurence O'Toole, Baldoyle, at 10am on Monday.