One of the worldês most popular water sports, whitewater canoeing involves paddling a canoeing on a whitewater river. While it may sound like an extreme sport, whitewater canoeing can be enjoyed by everyone from beginners to experts. Some courses are actually quite relaxing and very forgiving to less skilled paddlers. Others are very physically and technically demanding. Whitewater rivers are graded from the gentle Grade I to the severe Grade VI. It can be a competitive sport with slalom gates, or it can be purely a recreational activity to see how your canoeing skills fair against rough water. .