Lake Superior National Marine Conservation Area is a National Marine Conservation Area (NMCA) on the north shore of Lake Superior in Ontario, and is a unit of the national park system. Established on September 1, 2015, it is the largest freshwater marine protected area in the world.Although national marine parks and a reserve had been created previously, and managed as NMCAs, this was the first area in Canada to be designated a "National Marine Conservation Area" as defined by the Marine Conservation Areas Act. Plans to create it were first announced by Canadian Prime Minister Stephen Harper on October 25, 2007, in Nipigon, Ontario. The area is a unit of Canada's national park system administered by Parks Canada.The conservation area extends 140km eastward from Thunder Bay, from Thunder Cape in the west, at the tip of Sleeping Giant Provincial Park, to Bottle Point in the east, and stretches southward to the Canada-US border, linking with Isle Royale National Park. The Nipigon River and Lake Nipigon lie to the north.
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