The sea located between Europe and Asia is the Caspian Sea. It is actually the world's largest enclosed inland body of water, often referred to as a lake due to its salty water content. The Caspian Sea is bordered by five countries: Russia, Kazakhstan, Turkmenistan, Iran, and Azerbaijan. This body of water is significant for its biodiversity, including various fish species, and holds valuable natural resources like oil and gas. Historically, the Caspian Sea has served as a vital transportation route and cultural crossroads, influencing trade dynamics and regional interactions throughout history.