What!! Yes this man is riding his bike through a 2m deep bog, wearing a snorkel. It must be the World Mountain Bike Bog Snorkelling Championships!
Llanwrtyd Wells in Wales is hosting the contest. Bikes are specially prepared with a lead filled frame and water filled
tyres to make sure they grip on to the bottom.
And snorkeller-cyclists wear special weighted down belts to avoid floating off the bike.
But Natalie Bent, 25, from Aylesford in Kent seems to be swimming rather than cycling.
And she's still smiling - but she seems to have lost her bike! On Sunday, there's a Bog Triathlon - we can't wait!