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
Muthupet Lagoon can be observed well with the exposure of oyster beds and roots during low tide. The tidal fluctuations are playing a major role in dispersing the mangrove seeds. Dense mangroves mostly cover the lagoon shore. The islets are found on western side which are submerged during high tide. The salinity is the major environmental factor, controlling zonation of Muthupet mangrove forest. Avicennia marina is the conqueror of the forest which is found as a single dominant species. Southern side (mud flat) separates the lagoon from adjacent sea that also leaves a permanent mouth of lagoon with seasonally opened shallow waterways.