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ANCHORAGE, AK - JULY 15: A group of surfers ride the Bore Tide at Turnagain Arm on July 15, 2014 in Anchorage, Alaska. Alaska's most famous Bore Tide, occurs in a spot on the outside of Anchorage in the lower arm of the Cook Inlet, Turnagain Arm, where wave heights can reach 6-10 feet tall, move at 10-15 mph and the water temperature stays around 40 degrees Fahrenheit. This years Supermoon substantially increased the size of the normal wave and made it a destination for surfers. (Photo by Streeter Lecka/Getty Images)