Great Lakes Waterway River between Huron and Erie. Usually, one or more U.S. Coast Guard icebreakers help keep the water passage open for part of the fall and early winter, although shipping usually ceases for two to three months thereafter. The Great Lakes Waterway is co-administered by the governments of Canada and the United States of America. The waterway allows passage from the Atlantic Ocean to the inland port of Duluth on Lake Superior, a distance of and to Chicago, on Lake Michigan, at . Together with the Saint Lawrence Seaway, the Waterway allows both ocean-going vessels and the ore, grain and coal-bearing
Duluth, Minnesota along the Duluth waterfront. The Great Lakes Aquarium is in the Duluth Waterfront Park. A freshwater aquarium, it features animals and habitats found in the Great Lakes Basin and other freshwater ecosystems such as the Amazon River. The aquarium houses 205 different species of fish, birds, reptiles, amphibians and mammals. It is one of the few aquariums in the United States to focus on freshwater exhibits. The 16-acre Lake Superior Zoo offers year-round recreational activities and features animals from around the world, including Amur tigers, snow leopards, African lions, brown bears, kangaroos, and gray wolves, plus a variety of birds,