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 Idyl Lake Idyl Lake Idyl, an oval-shaped lake, is a natural freshwater lake in northeast Winter Haven, Florida. This lake has a surface area. Much of its surface area is swamplike and it has at least a few floating islands. Lake Idyl is bordered on the north and west by residences, on the northeast by a citrus grove, on the southwest by woods, on the south by Colony Club Mobile Home Estates and on the southeast by woods. This lake provides no public access, as it is completely surrounded by private land. A canal, not navigable, leads from the east side