Battle of Vistula Lagoon and the Poles and the Prussian Confederation seized the initiative in the Thirteen Years' War. The war itself ended with the signing of the Second Peace of Toruń in 1466 and the incorporation of Royal Prussia, including Gdańsk and Elbląg into Poland. The battle was first described by the contemporary Polish chronicler Jan Długosz. The battle is described in several works of historical fiction, among them "Znak Salamandry" ("Sign of the Salamander") by Jerzy Piechowski, "Skruszona Potęga" ("A Crumbled Power") by Kazimierz Traciewicz and "Bałtyckie Orły" ("Eagles of the Baltic") by Józef Wójcicki. Battle of Vistula Lagoon The Battle of
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