It is known that the Black & Mediterranean Seas completely evaporated long before the appearance of Homo Sapiens. Both seas lose water by evaporation faster than water replenishment from by rain fall & input from rivers. To maintain current sea levels, the Black Sea requires input from the Mediterranean & the Mediterranean requires input from the Atlantic Ocean. However, knowledgeable historians & geologists are aware that the Black Sea partially evaporated after Homo Sapiens built primitive villages below the current sea level. The remains of such villages have been discovered (not sure when) circa 200 feet below the current level of the Black Sea. The straights between the Mediterranean & the Black sea closed long enough to result in the evaporation. Water is persistent The Noah flood story is likely due to the above historic events.