What drives a couple to spend three months swimming across an ocean?
For French adventurers Matthieu Witvoet and Chloe Leger Witvoet, it’s equal parts passion, endurance and a love for the sea.
This November, they’ll dive off Cape Verde, near Africa, and begin a staggering 3,800-kilometre relay swim to Guadeloupe in the French Caribbean.
The plan is audacious: six hours each in the water, every day, taking turns while their catamaran drifts at night.

They’re chasing two world records — the longest female ocean crossing and the longest relay swim “with drifting.”
“This is ultra-swimming, and that is what we like to do,” says Leger.
An Epic Swim For The Planet
Their résumé backs it up — Gibraltar, the Seine, and Marseille to Barcelona are already under their belts.
But the Atlantic? That’s another beast entirely.
They’ve been training up to four hours a day to toughen their bodies, ready for 23-degree waters and weeks without a solid night’s sleep.

A four-person crew, including a nurse, will support them. But this isn’t just a stunt — it’s a lesson plan.
Over 63,000 children have signed up to follow their journey and learn about ocean biodiversity.
In a world drowning in bad news, it’s refreshing to see two people literally going the distance for the planet.