The World Bog Snorkeling Championship has been held along the dense Waen Rhydd Peat bog near Llanwrtyd Wells, in Powys, Wales since 1985. It may be a world championships, but you can see on this video that not all competitors take it seriously. Competitors need to complete a return swim along the 55m bog lap, with no conventional swimming strokes allowed. Goggles and flippers are essential though if you want to go anywhere. A record 84 seconds was set in 2011. See more on the bog snorkelling world championships.