According to satellite data, there are over 100 million lakes in the world that are larger than one hectare (2.47 acres). The largest lakes, which rival the size of entire countries, are becoming increasingly rare.
One might assume the world's greatest lakes to be quite similar, however their attributes vary greatly, from depth to saline content. Furthermore, the ranking of the world's greatest lakes is fluid, as human activity has the potential to change a vast body of water into a desert in a single generation.
The Caspian Sea is by far the largest lake on the planet, with a name that alludes to a time when it was joined to the ocean some 11 million years ago. Kazakhstan, Russia, Turkmenistan, Azerbaijan, and Iran share this vast saline lake, which is roughly the same size as Japan.
The basin, which covers 371,000 km2, is expected to have 48 billion barrels of oil beneath the surface.
In addition, the Caspian Sea is one of Asia's deepest lakes. The Caspian Sea, at 1,025 meters, is Asia's second-deepest lake after Lake Baikal, which has a maximum depth of 1,637 meters.
The sea is home to the beluga sturgeon, a fish whose eggs are used to make a very expensive food called caviar. Large amounts of oil have been found under the Caspian Sea.
Because it is not connected to any other seas, the water is extremely salty. This means that the salts and nutrients that enter the Caspian Sea via rivers and rain are accumulated there.
Source: VisualCapitalist.com, dkfindout.com, rlist.io
