At the end of October 2016 it was observed the enormouse anomalous development of cyanobacteria Anabaena flos aquae and Anabaena spp. on the surface of Dnieper river near Kyiv (Kiev) Ukraine. The main explanation of this effect was water pollution in the Dnieper river. The waves, wind and river currents made fantastic pictures from algaes on the Dnieper river surface. The cycle of my photos devoted to presentation of this phenomenon. I have obcerved this and share with You.