30 amazing facts about the Caspian Sea

The Caspian Sea is a unique ecosystem with no outlet to the world ocean, except for the Volga River. It is considered to be the largest lake in the world, which combines the salinity of the sea and the characteristics of the sea in terms of its subterranean nature.

This article features the following interesting facts about the Caspian Sea:

  1. It is the largest landlocked water system on Earth.
  2. The third deepest place in the world: Baikal (Russia) – 1620 meters, Tanganyika (Africa) – 1435 meters, Caspian Sea – 1025 meters;
  3. The average depth is about 208 meters;
  4. The recorded wave size in the Caspian Sea is 11 meters;
  5. There is no current in the Caspian Sea, but the amount of water in the sea is unstable. Over three thousand years, water level changes reached 40 meters. For now, it remains unknown where the Caspian water goes;
  6. Hazara has 130 rivers. About 70% of the sewage in the sea comes from Russia’s largest river, the Volga (3530 km long);
  7. There are 50 islands inthe Caspian Sea . The largest island belonging to the territory of Turkmenistan is Ogurjaly Island;
  8. There are large and small bays along the coast. Most of the 16 bayshere were formed millions of years ago;
  9. The first people lived on the shores of the Caspian Sea 75,000 years ago;
  10. Complete renewal of sea water occurs once every 250 years ;
  11. Lake Garabogaz Bay is the largest and most unique bay of the Caspian Sea. Its salinity reaches 200%;
  12. The Caspian Sea is estimated to be 6 millionyears old;
  13. The main source of the formation of the Caspian, Black, Azov seas and the Aral Sea, as well as the Hungarian Lake Balaton, is the Tethys Ocean, which was here in ancient times ;
  14. During the centuries of history, the Caspian Sea has been called by different peoples with different names. This sea was called Jurjan by the Egyptians, Sihai by the Chinese, Kolzum by the Iranians, Vorukasha by the Indians, Kukkuz by the Turkmen, and Aturav by the Kazakhs.
  15. The sea is located on the border between Asia and Europe;
  16. Caspian coast is located in 5 countries – Turkmenistan, Russia, Kazakhstan, Azerbaijan and Iran;
  17. Until the 2000s, 90% of the world’s black caviar productioncame from the Caspian Sea;
  18. The first reliable map containing detailed information of the Caspian Sea wascreated in 1719 after the expedition of Bekovich-Cherkassky;
  19. In 1921, experienced fishermen caught a beluga weighing 1,200 kilogramsfrom here ;
  20. The Caspian sea is very rich in oil and gas;
  21. The largest seaport on the territory of the Caspian Sea is located in Baku;
  22. The northern part of the sea is considered the deepest;
  23. Due to water instability, the appearance of the Caspian Sea is constantly changing. At high tide the sea joins the Black Sea;
  24. In winter, the northern part of the sea freezes and covers the water with ice;
  25. According to the current results, the amount of oil and gas reserves in the sea is defined as 6.5 billion tons ;
  26. Hazard icebergs are extremely rare. The last movement of the extraordinary ice pack was recorded here in December 2020;
  27. Plates believed to be parts of Sabail Palace (1234) were found at the bottom of the sea. “Bail stones” are stored in the Shirvansha Museum of Baku;
  28. About 1,800 species of animals live in the sea and its coastal areas, and more than 700species of plants grow here.
  29. The Caspian sea urchin is endemic to the sea. Unfortunately, the number of these unique marine mammals has declined significantly in recent years.
  30. August 12is International Caspian Sea Day.