Northern Waters of the Caspian Sea42.0N 50.0E
The northern section of the Caspian Sea is colored bright green by algal growth and sediments from the Ural River (top center) and the Volga River (upper left quadrant). The deltas of both rivers are extensive wetlands, although that of the Volga has experienced significant losses due to industrial and agricultural use of the area.
As one moves southward towards the end of the Caucasus Mountains, along the border of Russia and Azerbaijan, the waters of the sea gradually become clearer.
Across from the mountains, on the eastern shore of the sea in Turkmenistan, Karabogas Bay is separated from the rest of the Caspian by a narrow ridge. The waters of the bay appear lighter, as the bay is shallower, has a higher salinity, and contains more salt deposits.