[yt] Martin Strel is not an athlete. He is a fifty-plus, big bellied Slovenian man who drives whilst drunk and eats horse burgers. He's also and endurance swimmer, conquering the worlds largest rivers the Mississippi, the Danube and the Yangtze to draw attention to environmental issues. Journeying with his English speaking son Borut and director John Maringouin, he sets out to swim the Amazon, facing obstacles including carnivorous fish, rapids and toxic water pollution. Big River Man is a character study filled with humour, an edge-of-your-seat thrilling adventure and an awareness raising environment documentary that delivers on all fronts.

Big River Man is a 2009 Sundance film festival award winner

http://www.mirror.co.uk/news/top-stories/2009/08/23/man-swims-the-entire-length-of-the-amazon-115875-21616720