The volunteer crews made best speed to the area, in choppy seas, along with Coastguard Rescue Helicopter 187 and members of Tenby and St Govans Coastguard Rescue teams.
Upon reaching Barafundle, the lifeboats performed a thorough search of the area, while the helicopter and Coastguard teams searched from above.
After exhausting the search area and with nothing found and nobody reported missing, the incident was classed as a false alarm with good intent and all teams were stood down.