Caspian Sea another option. Caspian Sea The Caspian Sea is the world's largest inland body of water, variously classed as the world's largest lake or a full-fledged sea. It is an Endorheic basin (a basin without outflows) located between Europe and Asia, to the east of the Caucasus Mountains and to the west of the broad steppe of Central Asia. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the west, Iran to the south, and Turkmenistan to the southeast. The Caspian Sea is home to a wide range of species and may be best known for
Black Sea Lowland Plateau, Podillia Upland, Dnieper Upland, Zaporizhian Ridge, Azov Upland. Azov, Crimean, and Bugeac lowlands consider to be extension of the Black Sea Lowland and its regional extremities. Black Sea Lowland is an accumulative, weakly divided plain which being part of the greater Eastern European Plain gradually slopes towards the Black Sea and the Sea of Azov. Black Sea Lowland Black Sea Lowland is a major geographic feature of the Northern Pontic region and the East European Plain. It almost completely within the Southern Ukraine covering half of its territory. The lowland is located along the northern shores of Black Sea.