1. Our Slavic ancestors called the Baltic Sea Varangian.
2. In the Baltic Sea, the tides are almost not felt - the water level changes by a couple of tens of centimeters, which is significantly lower than in most other seas.
3. The Altian Sea is considered quite calm in terms of waves - here they rarely exceed three meters in height even in bad weather. However, waves higher than ten meters were also observed.
4. The northern part of the Baltic Sea freezes in winter. A similar picture is observed in the Sea of ​​Japan.
5. The ecological situation in the Baltic Sea leaves much to be desired, since after the Second World War, here, on the seabed, chemical weapons burials were arranged. The past years have not been in vain - water gradually corrodes containers with chemicals, and toxic substances begin to seep out.
6. A gas pipeline is laid along the bottom of the Baltic Sea - the famous Nord Stream.
7. Estonians call the Baltic Sea Western, and the Germans, Swedes and Finns - East.
8. There is an amazing place on the Danish coast of the Baltic Sea - the so-called "Troll Forest", a park where once planted trees are intricately curved. The reason for this transformation of tree trunks is still not completely clear.
9. The Baltic Sea borders on the North Sea, but the waters of these seas practically do not mix. The reason for this is their different density.
10. More gold is dissolved in the waters of the Baltic Sea than in any other sea.