The Great Lakes (also called the Laurentian Great Lakes, or the Great Lakes of North America) are a series of interconnected freshwater lakes located primarily in the upper midwest region of North America, on the Canada–United States border, which connect to the Atlantic Ocean through the Saint Lawrence River. Consisting of Lakes Superior, Michigan, Huron (or Michigan–Huron), Erie, and Ontario, they form the largest group of freshwater lakes on Earth, containing 21% of the world’s surface fresh water by volume. The total surface is 94,250 square miles (244,106 km2), and the total volume (measured at the low water datum) is 5,439 cubic miles (22,671 km3). Due to their sea-like characteristics (rolling waves, sustained winds, strong currents, great depths, and distant horizons) the five Great Lakes have also long been referred to as inland seas. Lake Superior is the second largest lake in the world by area, and Lake Michigan is the largest lake that is entirely within one country. The southern half of the Great Lakes is bordered by the Great Lakes Megalopolis.

To study on the picture of the five Great Lakes, and to rotate it 90 degrees, we may find that the Great Lakes shapes like a child from the uphill ski down: Superior is his head (the nose and mouth are very obvious, and the hat waves back), Michigan is an arm (backward swing), Huron is the body (it seems to be wearing armor), Erie and Ontario is a pair of skis. The entire graphic is vivid and living, also reflects the North American’s real life. This is just that God gave North americans a blot during the creation of the world!

In Canadian Environment