Interesting facts about the Caspian Sea + Tourist Photos
The Caspian Sea is a remnant of the ancient Paratethys Sea, part of the Tethys Ocean that existed 50 million to 60 million years ago. At that time, the Tethys Ocean was connected to the Atlantic and Pacific oceans, according to WorldLakes.org. Over millennia, continental platforms shifted, and the Tethys Ocean lost its connections to other oceans. 
