Authorities in Belgium launched a rescue operation after a couple were spotted 'struggling' in the sea - only to find they were making love.
The alert was raised after a man from De Panne spotted the couple with his binoculars and contacted the coastguard, reports Het Nieuwsblad.
A Sea King rescue helicopter from a military base in Koksijde, a lifeboat and local police officers were all drafted in to help the couple.
But when the two swimmers were finally 'rescued' they complained there was nothing wrong with them and they had never been in any danger.
The 23-year-old girl, from Waterloo, was wearing only her partner's boxer shorts while the man, also 23, was completely naked.