Lake Superior other Great Lakes fish, populations have also been affected by the accidental or intentional introduction of foreign species such as the sea lamprey and Eurasian ruffe. Accidental introductions have occurred in part by the removal of natural barriers to navigation between the Great Lakes. Overfishing has also been a factor in the decline of fish populations. Lake Superior Lake Superior (; ), the largest of the Great Lakes of North America, is also the world's largest freshwater lake by surface area, and the third largest freshwater lake by volume. The lake is shared by the Canadian province of Ontario to
Lake Lulu Lake Lulu Lake Lulu is a natural freshwater lake in Winter Haven, Florida. The lake has a surface area and has a somewhat irregular oval shape. It is bounded on the north and northeast by private residences. It has no eastern or western sides, as the lake's shore comes to a point on those two sides. At the eastern point, it is bounded by West Lake Eloise Drive and about beyond that is Lake Eloise. The entire south side of the lake is lined with a swampy area and a dense growth of trees. On the northwest, Lake Lulu is