The Caspian Sea is the largest lake in the world, which is why it is called the sea The Caspian Sea or the khazar Sea is limited from north to the Russia, from the south to Iran, from the west to Azerbaijan and from the east to the Turkmenistan and Kazakhstan republics.

Caspian latitude and longitude are 1204 and 204 km, and the area is 436000 square kilometers.

The Caspian Sea is about 28 meters below the free water level and its average depth is about 180 meters.

The Caspian Sea is very important for fishing, and its sturgeon has a global reputation.

About 300 tons of caviar is slaughtered annually and about 90% of the caviar in the world is also obtained from the sea.

There are about 100 species of fish in the sea, and currently only about 15 species are exploited.