 The Arctic chart prepared by Durham University explicitly illustrates the extent of the uncontested Exclusive Economic Zones of the five states bordering the Arctic Ocean, and also the relatively small expanse of remaining "high seas" or totally international waters at the very North of the planet.Canada ratified UNCLOS on 7 November 2003 and had through 2013 to file its claim to an extended continental shelf., Canada had announced that it would file a claim which includes the North Pole.