Top 1 in Top 10 largest lakes on the planet you may not know.
The Caspian Sea is actually a lake by land entirely, not affiliated with the sea and other oceans. Around the Caspian Sea covers the territory of 5 countries: Azerbaijan, Iran, Kazakhstan, Russia and Turkmenistan. The Volga River, the longest river in Europe, is the main water source of the Caspian Sea.
The Caspian Sea is the largest lake in the world, with a water surface of about 371,000 km², nearly five times the size of Lake Superior. The reservoir 78,200 km of water by volume, about 3.5 times the water compared to the whole year the large lake after it.