A diver was treated at Craigavon Hospital after suffering compression sickness in Donegal.
The man was airlifted on Sunday by Coast Guard helicopter off Fanad Head. He was treated what is commonly known as ‘the bends’.
The experienced diver is said to be making a good recovery after the incident.
A Coast Guard spokesman said the alarm was raised around 3.30pm on Sunday and the Sligo 118 helicopter rushed to the scene.
The diver was among a group who were diving off the wreck of HMS Audacious.
The war ship was sunk by a German mine off the Co Donegal coast in October 1914.