The incident happened off Wexford's Hook Head this evening.
The father of four in his forties was taking part in an underwater search for a fisherman who went missing from a trawler off the Saltee Islands yesterday morning.
The alert was raised shortly after noon today as he returned to the surface after a dive.
He was treated by colleagues at the scene and airlifted to University Hospital Waterford where he has since been pronounced dead.
Teen Arrested After Dangerous Driving On N11 Bray
Gardaí saw a car going the wrong way in the southbound carriageway after 3am yesterday morning.
Amhrán na Laoch Provides Potential Gateway For Wicklow Songwriters
Whether you’re based in Bray, Greystones, Arklow, Blessington, or the wider county, this is a chance to put Wicklow’s Irish-language songwriting on the national map – with radio play, press coverage, mentoring, and a Gael Linn release to back it up.
Wicklow Ready For National Heritage Week With Treasure Trove Of Events
Love Pours Out For Little Acorn Café, Baltinglass Amid Closure
The much-loved Wicklow business is closing in less than two weeks.
Wicklow Player Scoops €500,000 EuroMillions Prize
Garden of Ireland gambler strikes gold
8:00pm - 10:00pm
Love Songs on the Coast
Light rain shower
High: 25°C | Low: 18°C
Sunny intervals
High: 25°C | Low: 17°C
Sunny intervals
High: 28°C | Low: 17°C
Light rain shower
High: 29°C | Low: 16°C
Light rain shower
High: 29°C | Low: 17°C