Courtown RNLI lifeboat was launched at 7.04 pm on Friday evening to search the waters at Seafield Beach, Ballymoney, but nothing was found.
The launch was activated after Gardai received a call from a concerned member of the public who claimed that something was observed in the water and it was felt it may be a swimmer in distress.
The call came in at 6.54 pm and The D-class from Courtown RNLI was launched at 7.04 pm with RNLI volunteers, Fergus Slevin (Helm) Cormac Kinsella and Tom Dalton onboard.
Alongside the Arklow-Courtown Coastguard unit and local Gardai, the coast was searched, but nothing of concern was found.
It turned out to be a false alarm, but with good intention from the concerned parties.
Sam Kennedy Lifeboat Operations Manager at Courtown RNLI Lifeboat said; “Whilst this turned out to be a false alarm, we encourage members of the public to be vigilant along the coast and to report anything of concern.”