Byriuchyi Island is a spit in the northwestern part of the Azov Sea, expanded southern part of the Fedotova Spit. Together with the narrow northern part of the Fedotova Spit, Byriuchyi Island forms the Utljuk Lyman separating it from the sea from the east. Until 1929, the current Spit was an island, separated from the northern part of the Fedotova Spit by a narrow strait.