Vistula Lagoon million. However, major ecological considerations stand in the way. For example, mammal migration along the lagoon could be disrupted. Also, the inflow of brackish waters from the Baltic sea could result in serious unbalancing of the lagoon's freshwater ecosystem. From 1772 until 1918, the lagoon was part of the Kingdom of Prussia, which had become part of the German Empire in 1871. Between 1920 and 1946 it was split between Germany and the Free City of Danzig. At present state since 1945 its eastern part belongs to Russia (formerly USSR), Poland has 43.8% of its area at lagoon's western side.
Battle of Vistula Lagoon The cities' ships on the other hand, came out of the river into the lagoon and formed themselves into a crescent formation. Despite having fewer ships, the Prussians (as more experienced sailors) were victorious. They gained control of the Vistula. Among the captured knights was Hans Hetzel, the komtur of Memel (Klaipėda). As a result of the battle, Mewe capitulated to Polish forces in 1464, and the Teutonic Navy was eliminated as a viable force. A number of mercenaries in the Order's service, including Bernard Szumborski, left the Teutonic side and signed an independent peace treaty with the Polish king,