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
Missolonghi Lagoon Missolonghi Lagoon The Missolonghi Lagoon (, "Limnothalassa Mesolongiou") is a shallow lagoon located in the south of Aetolia-Acarnania, Western Greece. It is connected to the Gulf of Patras, a bay of the Ionian Sea. Its length is approximately 15 to 20 km along with its width, its shape resembles a triangle. The deepest depth is 5 to 6 m, other than the largest part in which its depths does not pass over half a metre and it contains seaweeds. Several islands surround the lagoon Near to the coasts, the depth is only 10 cm and it is a swampy area