Solution:The Caspian Sea is the world’s largest inland sea. It is the world’s largest lake with a total area of approximately 371000 sq. km. Caspian Sea is the world's largest water body that is enclosed or bordered by land on all sides. This massive lake is located between Asia and Europe.The sea's name derives from the ancient Kaspi peoples, who once lived in Transcaucasia to the west. It is an endorheic basin (drainage basin without an outflow).It covers a total surface area of about 386,400 sq.km. and is about 1,200 km long and 320 km wide.
The sea is also known for its abundance of energy resources (oil and natural gas reserves in offshore fields and onshore on the coast of the sea). It is the source of most of the world's caviar.