Because the Black Sea is not isolated from other seas and is a permanent sea.
A Russian Inland Sea is ARAL
After the geology terminology the Black Sea is not an inland Sea.
The Black Sea
This is the Black Sea.
The Baltic Sea is a brackish inland sea.
Yes, the Caspian Sea is the largest inland sea.
Adriantic sea, Black sea, Sea of Ozov, Caspian Sea, White Sea, Baltic Sea, Sea of Marmara are some of the landlocked seas in Europe. We can observe these things on a physical map of Europe. Landlocked seas are the water bodies that are surrounded by water by all the sides.
There is only one inland sea in Europe: the Caspian Sea. Many mistake the Black Sea for being an inland sea, but in fact, it is connected to the Mediterranean Sea.
Inland Sea, is the body of water separating Honshū, Shikoku, and Kyūshū, three of the main islands of Japan. It serves as an international waterway, connecting the Pacific Ocean to the Sea of Japan.
There's 3 seas around Turkey : Mediterranean Sea,Black Sea and Aegean Sea. There is also one inland sea called Sea of Marmara which has connections with Aegean and Black Sea.
The Black Sea is an inland sea bounded by Europe, Anatolia and the Caucasus.There is no such thing as the Yellow, Red or Blue Sea.However, the sea can be called the 'Blue Sea'.
Main-Danube Canal