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Which river flows into the Sea of Azov?
Sea of Azov is a small and shallow sea, sometimes regarded as a northern extension of the Black Sea. Two large rivers, Don and Kuban, flow into it, and so the sea has low salinity and a high amount of biomass (such as green algae) that affects the water colour. It was known in Ottoman Turkish as the Balük-Denis ("Fish Sea") from its high productivity.