The Black Sea is a sea in Eurasia between Europe, ...

The Black Sea is a sea in Eurasia between Europe, Caucasus, and Anatolia. Many big rivers connect to the Black Sea, like the Don, Danube, and Dnieper rivers.

It is connected to the Atlantic Ocean through the Mediterranean Sea, Aegean Sea, and many straits. 90% of the sea has no oxygen. The water is saltwater but less salty than the ocean. During the last ice age, the Black Sea was a freshwater lake.