Black Sea....

Satellite view of the Black Sea	The Black Sea (known as the Euxine Sea in antiquity) (Greek: Μαύρη Θάλασσα or Εύξεινος Πόντος, Turkish: Kara Deniz) is an inland sea between southeastern Europe and Asia Minor. It is connected to the Mediterranean Sea by the Bosporus and the Sea of Marmara, and to the Sea of Azov by the Strait of Kerch.
The name 'Black Sea' (initially Pontos Axeinos, "inhospitable sea", later renamed Pontos Euxeinos, "hospitable sea" to gain the sea's good favor) was coined by the Ancient Greek navigators, because of the unusual dark color, compared with the Mediterranean Sea. Visibility in the Black Sea is on average approximately 5 meters (15 feet), as compared to up to 35 meters (100 feet) in the Mediterranean. The land at the eastern end of the Black Sea, Colchis (now Georgia), marked for the Greeks an edge of the known world.
While it is agreed that the Black Sea has been a freshwater lake (at least in upper layers) with a considerably lower level during the last glaciation, its postglacial development into a marine sea is still a subject of intensive study and debate. There are catastrophic scenarios such as put forward by William Ryan and Walter Pitman as well as models emphasizing a more gradual transition to saline conditions and transgression in the Black Sea. They are based on different theories about the level the freshwater lake had reached by the time the Mediterranean Sea was high enough to flow over the Dardanelles and the Bosphorus. On the other hand, a study of the sea floor on the Aegean side shows that in the 8th millennium BCE there was a large flow of fresh water out of the Black Sea.
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