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
Tortuguero Lagoon Tortuguero Lagoon Laguna Tortuguero Natural Reserve is a natural reservoir located between the municipalities of Vega Baja and Manatí in Puerto Rico. The lagoon is one of only two natural reservoirs in the island of Puerto Rico (the other being Joyuda Lagoon), and is home to an ample variety of species. Tortuguero Lagoon Nature Reserve is the only freshwater lagoon in Puerto Rico. It contains about 708 million gallons of water. The reserve was designated in 1979 through a program of Coastal Zone Management PR. It is located between the municipalities of Vega Baja and Manatí. It covers approximately 2.43