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.
Jubho Lagoon intrusion is taking place, which is stunting the growth of freshwater vegetation. However, the site is still not protected under any environmental legislation or site-specific conservation programme. Few research projects to study the flora and fauna of the region have been undertaken by the Zoological Survey Department of Pakistan and the National Institute of Oceanography. The Coastal Ecosystem Unit of IUCN, Sindh Wildlife Department, and Sindh Environment Protection Agency conduct awareness and conservation activities in the region. Jubho Lagoon Jubho Lagoon is a large shallow brackish lagoon located in Sindh, Pakistan. In May 2011 Jubhoo lagoon was inducted into the