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.
Grand Lagoon Grand Lagoon Grand Lagoon ( , ) is a freshwater lagoon of elevation on Bulgarian Beach, Hurd Peninsula in eastern Livingston Island, in the South Shetland Islands, Antarctica. Formed by Rezovski Creek and separated from sea by a moraine of elevation near . Surmounted by Pesyakov Hill. On the northeast side of the lagoon is the helipad of the Bulgarian base, and on its southwest side — the designated embarkation area and a shed hosting the base's Zodiac inflatable boats. A descriptive name, established in use at the time of approval. The midpoint of the lagoon is located at .