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
Crystal Lake (Davenport, Florida) Crystal Lake (Davenport, Florida) Crystal Lake is one of a large number lakes of the same name in the world, including six others in Polk County, Florida. This lake is west of Davenport, Florida, and north of Haines City, Florida. It has a surface area and is shaped like a backwards comma. Crystal lake, a natural freshwater lake, is in a hilly area and is northwest of the intersection of Sanders Road and US Highway 27. It is in the vicinity of a large housing development and a fountain has been placed in it. On the east Crystal Lake is