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
Waituna Lagoon Waituna Lagoon The Waituna Lagoon is on the southern coastline of the South Island of New Zealand. It forms part of the Awarua Wetland, a Ramsar site that was established in 1976. The lagoon is an important habitat for resident and migratory birds with seventy three different species being recorded. The expansion in the area of "Leptocarpus" rushes that has been observed over a 47-year period in the lagoon have been attributed to artificial openings of the lagoon to the sea, and the increase in sedimentation. The lagoon is largely unmodified by human activity but there are elevated nutrient levels