The Spits of the Sea of Azov are narrow strips of land in the Sea of Azov which can be as long as 112 km (Arabat Spit, the world's longest spits), 45 km (Fedotov Spit), 31 km (Achuevsk Spit), 30 km (Obitochna Spit) and 23 km (Berdyansk Spit). Their total length exceeds 300 km which is larger than the width of the sea (about 180 km). Most of the spits were formed as a result of deposition of sand, silt and shells by the river flows into the Azov Sea bays.