Where Is the Biggest Saltwater Lake In the World and How Was the Caspian Sea Formed?
The Caspian Sea, which is a saltwater lake that borders Russia, Kazakhstan, Turkmenistan, Azerbaijan, and Iran, covers 143,244 square miles (371,000 sq km), and is the biggest saltwater lake in the world. The Caspian Sea is a remnant of the ancient Paratethys Sea just like the Black Sea, and became landlocked about 5.5 million y