A sea cannot be be an island !?
Caspian sea and black sea
Caspian sea is really a lake.THE BLACK SEA
The CAUCASUS MOUNTAINS run from the Black Sea to the Caspian Sea.
The Mediterranean Sea is located south of the Black Sea. The Caspian Sea is located east of the Black Sea and the Red Sea is also located south.
Caucasus Mountains separate the Black Sea and the Caspian Sea.
The Black sea and the Caspian sea separate Eastern Europe and Western Asia.
The mountains that are between the black sea and the Caspian sea is the caucasus The Caucasus Mountains
Adriatic, Mediterranean , Baltic, Agean, Sea of Japan, the Red Sea , Arabian Sea, Caspian and Black Sea.
The Black Sea is well to the north of the Caspian Sea. The Mediterranean Sea is to the west if that helps any.
The Black Sea
Mediterranean Sea, Red Sea, Black Sea, Caspian Sea, Arabian Sea, Persian Gulf/Aral Sea.
Mediterranean Sea, Red Sea, Black Sea, Caspian Sea, Arabian Sea, Persian Gulf/Aral Sea.