Caspian Sea
The sea has a surface area of 371,000 km (143,200 sq mi) (not including the detached lagoon of Garabogazköl) and a volume of 78,200 km(18,800 cu mi). It has a salinity of approximately 1.2% (12 g/l), about a third of the salinity of most seawater.
Volga–Baltic Waterway
The Volga–Baltic Waterway, formerly known as the Mariinsk Canal System (Russian: Мариинская водная система), is a series of canals and rivers in Russia which link the Volga River with the Baltic Sea via the Neva River. Volga–Baltic Waterway connects the biggest lake on Earth, the Caspian Sea to the World Ocean. Its overall length between Cherepovets and Lake Onega is .