What is this?

Looking at Wikipedia I quote:

“Bog snorkelling is a sporting event in which competitors complete, in the shortest time possible, two consecutive lengths of a water-filled trench cut through a peat bog. Competitors must wear snorkels and flippers and complete the course without using conventional swimming  strokes, relying on flipper power alone. A wetsuit is not compulsory, but is often worn.”

I only looked this up because there is a channel identity thing for BBC1 which has bog snorkeling in it. Not having heard of it before, and not knowing that it was a sport I was fascinated by the idea. Its odd what humans get up to. Apparently it’s held in Wales, Ireland, Sweden and Australia?