Vistula Lagoon Vistula Lagoon The Vistula Lagoon (; or "Kaliningradskiy Zaliv"; ; ) is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from Gdańsk Bay by the Vistula Spit. It is now known as the Vistula Bay or Vistula Gulf. The modern German name, "Frisches Haff", is derived from an earlier form, "Friesisches Haff". The lagoon is a mouth of a few branches of the Vistula River, notably the Nogat, and the Pregolya River. It is connected to
Lagoon in Mexico, which is actually the third largest lake by area in the country. The brackish water lagoon may be thus explicitly identified as a "coastal lagoon" ("laguna costera"). In Portuguese the same usage is found: "lagoa" may be a body of shallow sea water, or a small freshwater lake not linked to the sea. Lagoon is derived from the Italian "laguna", which refers to the waters around Venice, the Lagoon of Venice. "Laguna" is attested in English by at least 1612, and had been Anglicized to "lagune" by 1673. In 1697 William Dampier referred to a "Lagune or Lake