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.
Missolonghi Lagoon Missolonghi Lagoon The Missolonghi Lagoon (, "Limnothalassa Mesolongiou") is a shallow lagoon located in the south of Aetolia-Acarnania, Western Greece. It is connected to the Gulf of Patras, a bay of the Ionian Sea. Its length is approximately 15 to 20 km along with its width, its shape resembles a triangle. The deepest depth is 5 to 6 m, other than the largest part in which its depths does not pass over half a metre and it contains seaweeds. Several islands surround the lagoon Near to the coasts, the depth is only 10 cm and it is a swampy area