The Caspian Sea is the world's largest inland body of water
Bordered by five countries, the Caspian Sea is a massive saline basin that blurs the line between lake and sea, containing forty percent of the world's total lacustrine waters.
The Caspian Sea occupies a staggering 143,000 square miles, making it larger than the Great Lakes combined. While it is technically an endorheic lake because it has no natural outlet to the ocean, its vast size and brackish water give it the characteristics of a true sea.
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