Vistula Lagoon of the Ests". Over three hundred years later, in the first half of the 13th Century, the name of Vistula Lagoon occurs in deeds issued by Teutonic Order in Latin version as Mare Recens (1246 - "mare" - a pool or lake or sea and "recens" - fresh) in contrast to the contemporary name for the Baltic Sea - Mare Salsum (Salty Sea). Then in 1251 we find record about Mare Recens et Neriam (Frisches Haff and Frische Nehrung, now Vistula Spit) and finally in 1288 Recenti Mari Hab (Haff) which as one can see corresponds with later German "Frisches
Rekawa Lagoon Kirama-oya river (Tangalu-oya river) that enters the lagoon at the sea ward end of the inlet canal is the main freshwater supply. Apart from the main freshwater inflow, there are two small freshwater streams function only in rainy season and provide surface runoff from the catchment. The total hydro-catchment of the lagoon outlet is about . Shrimp fishery is one of the main livelihoods among the lagoonal community. However this supports the people only during the shrimp fishery season which extends from October to April. The most abundant shrimp species in Rekawa lagoon and commercially most important shrimp species is