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.
San Elijo Lagoon Rancho Santa Fe inland and the Pacific Ocean to the west. The Reserve encompasses an area of 915 acres. The lagoon is the terminus of the Escondido Creek watershed which covers an area of 54,112 acres. The water in the lagoon comes from the Escondido Creek watershed and the Pacific Ocean. The Reserve is managed by the California Department of Fish and Game, County of San Diego. and San Elijo Lagoon Conservancy. Within its 915 acres there are 6 plant communities; coastal strand, salt marsh, riparian scrub, coastal sage scrub, freshwater marsh, and mixed chaparral. There are more than 300