Arctic Archipelago Disagreement over the passages' status has raised Canadian concerns about environmental enforcement, national security, and general sovereignty. Hans Island, in the Nares Strait east of Ellesmere Island, is a territory currently contested between Canada and Denmark. The archipelago extends some longitudinally and from the mainland to Cape Columbia, the northernmost point on Ellesmere Island. It is bounded on the west by the Beaufort Sea; on the northwest by the Arctic Ocean; on the east by Greenland, Baffin Bay and Davis Strait; and on the south by Hudson Bay and the Canadian mainland. The various islands are separated from each other
Hudson Complex to the east. The Fury and Hecla Strait, between Baffin Island and the Melville Peninsula, is the transition to the Lancaster Sound marine ecoregion to the northwest. Hudson Complex The Hudson Complex is a marine ecoregion in Canada, part of the Arctic marine realm. The Hudson Complex includes Hudson Bay and smaller James Bay to the south, as well as the Foxe Basin, Hudson Strait and Ungava Bay. The Canadian mainland surrounds the Hudson Complex on the west and south, and Baffin Island on the north. Straits connect the Hudson Complex to other marine ecoregions to the northwest and east.