Caspian Sea

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Caspian Sea Shallow salt lake, the world's largest inland body of water. The Caspian Sea is enclosed on three sides by Russia, Kazakstan, Turkmenistan and Azerbaijan. The s shore forms the n border of Iran. It has been an important trade route for centuries. It is fed mainly by the River Volga; there is no outlet. The chief ports are Baku and Astrakhan. It has important fisheries. Area: c.371,000sq km (143,000sq mi).