Who knew snow kayaking was a sport? People compete during a snow kayak downhill race near Otepaa, January 26, 2013. (Ints Kalnins via Photos: Sports Day In Pictures – Denver Post Media Center)

Mallory Franklin trains at the Lee Valley White Water Centre, the venue for the canoe slalom event at the London 2012 Olympic games, in Waltham Cross, England on January 18, 2012. (Photo by Leon Neal) (via Boston.com)

Racing the raging Green River (Photo by Matthew Rond) (via CNN Photos)

Austia’s Corinna Kuhnle paddles her way to victory in the women’s K1 at the ICF Canoe/Kayak Slalom World Championships in Cunovo, Slovakia, on Saturday, Sept. 10. (Photo by Radovan Stoklasa) (via NBC Sports)

Competitors paddle in a heat of the K4 500m race of the Flatwater Kayaking and Canoeing World Championships in Szeged, Hungary. (via SI.com)

A canoeist takes part in testing the Olympic course in Essex, UK. (via Leading Off: Pictures of the Week - Photos - SI.com)

Dustin Urban of the U.S. flips during the quarterfinals at the ICF Freestyle World Championships in Plattling, Germany. (via Leading Off: Pictures of the Week - Photos - SI.com)

Whitewater (by seamesse)

Kayak Polo: Virada Esportiva 2009 (by Mauro: Entre sprints e cerveja)

Olympian Scott Shipley paddles down rapids during the training session for the U.S. Slalom Kayaking Championships in Charlotte. (via SI.com - Photo Gallery - The Year’s Most Interesting Pictures)