or the Putrid Sea, a lagoon communicating with the Sea of Azoff, on the N.E. coast of the Crimea. It is separated from that sea by a narrow strip of land, stretching for the length of 70 miles from S.E. to N.W., and only leaving one opening, the Strait of Yenichti, near the northern extremity of the lagoon. Its whole length is about 110 miles, and its breadth varies from 2 to 15, the western coast being very much indented. The Salghir, the chief river of the Crimea, falls into the Sivash. The depth of the lagoon is very small; and the water, which is muddy, gives rise in summer to very unhealthy exhalations.