The Great Slave Lake, in Canada's Northwest Territories, is named after a group of Athabascan-speaking Indians called the Slave or Slavey. For nearly half the year, the ice on Lake Ysyk is thick enough to hold trucks and cars; every day in the winter, several hundred vehicles take a shortcut from Yellowknife to Dettah. O'Higgins/San Martín Lake is 836 meters deep in the Patagonian Andes. The Caspian Sea is 1,025 meters deep and has up to 1,000 fish species. Lake Nyasa has 15% of all freshwater fish species on the planet.
The Baikal seal is the world's only freshwater seal species. It is unknown how the seals got to Lake Baikal, which is hundreds of kilometers inland, from the seafloor.
