Exploring the world's most dangerous and inspirational waterways, from white water rafters taking on undefeated rapids on the Congo River to Antarctic waters' frozen fist. From mammoth canals to ferocious seas, the world's waterways are vital to life on Earth. They are also arenas for trailblazers, criminals and adrenaline junkies. These 10 extreme waterways are dangerous, relentless and shocking.
