The Battle of Blue Waters (Lithuanian: Mūšis prie Mėlynųjų Vandenų, Belarusian: Бітва на Сініх Водах, Ukrainian: Битва на Синіх Водах) was a battle fought at some time in autumn 1362 or 1363 on the banks of the Syniukha river, left tributary of the Southern Bug, between the armies of the Grand Duchy of Lithuania and the Golden Horde.

Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral.They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb.Adjacent cells are joined by small pores. Their distinguishing feature is their well-developed horizontal internal partitions (tabulae ...