Guba – a Russian Pomor word for sea gulfs with a river mouth penetrating deep into the land. Is widely spread in the north of the European part of Russia in Siberia and the Far East. Gs. are usually named after a river flowing into them, for instance, Kolymskaya Guba and Khromskaya Guba in the East Siberian Sea. In such gulfs the influence of rivers is very big: the bed has the traces of river depositions, the water is desalted to a great extent and is very different from the sea water in color.