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 Sibhayi Lake Sibhayi Lake Sibhayi, also known as Lake Sibaya, a freshwater lake in South Africa, with a surface area of 64 km². The lake is also wrongly known as Sibaya or Sibayi. The lake is located in the Maputaland, or Umhlabuyalingana, area of KwaZulu-Natal, on the east coast of South Africa. It is part of the Greater St. Lucia Wetland Park and is recognised under the Ramsar Convention as a "Wetland of International Importance" on 28 June 1991. In December 1999, the Greater St. Lucia Wetland Park was declared a UNESCO World Heritage Site, and it was renamed the iSimangaliso