A 52-year-old Irish holidaymaker drowned at Inatel beach in Albufeira, Portugal, in front of his partner.
Two Portuguese locals also got into difficulties trying to help but were rescued alive by lifeguards.
The Irish tourist could not be saved despite lifeguards performing CPR, and his partner received support from psychologists.
The sea was rough at the time, with strong swells and rocky bottoms creating dangerous conditions for swimmers.