Water Safety Ireland is appealing to swimmers and people taking part in water activities to take extra care over the festive season.
It follows the death of a swimmer in his thirties earlier this week at the Hawk Cliff bathing area on the Vico road in Killiney.
The Irish Coastguard were alerted on Wednesday afternoon, and Dun Laoghaire RNLI arrived at the scene and took the swimmer from the water to Coliemore Harbour, where medics were waiting.
But efforts to resuscitate the man failed.
TV's Brendan Courtney Helps Launch Wicklow Town Memory Café For People With Dementia
Calls For Support For Wicklow Bus Operators Amid Fuel Costs Rise
Bonjour Wicklow! French Travel Show Highlights Garden County as a 'Beautiful Escape'
Never-Say-Die Wicklow Hurlers Earn Kehoe Cup-League Double With Stirring Comeback Win
Have Your Seen Elizabeth?