It was just a normal day on Friday at La Teste-de-Buch, in Arcachon, until a group of around ten youths wearing clothes headed across the nude zone and walked among the naked beach goers.
But instead of taking off their swimwear and getting a full body tan like the others, the group "acted provocatively" around some of the naked women at the beach, reported France Bleu radio.
The Sud Ouest newspaper added the men had "staring" at the women, a clear breach of France's nude beach etiquette.
Their behaviour prompted other beach goers to confront the men, telling them to either "get nude or get lost".
The brawl kicked off at a beach to the west of Bordeaux. Photo: GoogleMaps
The argument escalated into a fight of clothed versus unclothed, with punches thrown, sand flung in people's eyes, and insults hurled left and right, according to reports.
With plenty of witnesses on hand, it wasn't long before someone alerted the authorities and a unit of the riot control CRS police raced onto the beach in a four-wheeler to calm the scene.
Two of the alleged aggressors, both from nearby Bordeaux, were caught by police after attempting to flee the scene, only to be let free later in the day.
A police investigation continues.
The recent boom in younger naturists visiting French nude beaches comes, unfortunately, with many stories about other undesirable visitors.
Earlier this month, for example, a 40-year-old British man was charged with "capturing and possessing images of child pornography" after taking a large number of photos of young women and girls at a nudist beach in southern France.