As the map is lacking, logically, in accordance to the locations of these seas, it will the Sea of Okhotsk that would not be labeled.
The Adriatic Sea, Black Sea, and North Sea are surrounding Europe, while the Sea of Okhotsk is in the easternmost part of Asia.
The Adriatic Sea is located between the Appenine Peninsula and the Balkan Peninsula, having roughly northwest-southeast direction of stretching.
The Black Sea is part of the border between Europe and Asia. It is located between the Balkan Peninsula, Asia Minor, the Caucasus, and Crimea.
The North Sea is located between the British Isles, Scandinavia, and the northern parts of Western Europe.
The Sea of Okhotsk, on the other side, is far away from Europe. This sea is located in the far east, being located between Siberia, Kamchatka, Sakhalin, and Hokkaido.
