The Albufera, La Albufera or L'Albufera de València, is a freshwater lagoon and estuary on the Gulf of Valencia coast of the Valencian Community in eastern Spain. It is the main portion of the Parc Natural de l'Albufera de València, with a surface area of 21,120 hectares. The natural biodiversity of the nature reserve allows a great variety of flora and fauna to thrive and be observed year-round. Though once a saltwater lagoon, dilution due to irrigation and canals draining into the estuary and the sand bars increasing in size had converted it to freshwater by the seventeenth century.
The Albufera of Gayanes, is a freshwater lagoon in the municipality of Gayanes (Alicante), Valencian Community, in eastern Spain.

Brownsea Island, also archaically known as Branksea, is the largest of the islands in Poole Harbour in the county of Dorset, England. The island is owned by the National Trust with the northern half managed by the Dorset Wildlife Trust. Much of the island is open to the public and includes areas of woodland and heath with a wide variety of wildlife, together with cliff top views across Poole Harbour and the Isle of Purbeck.

The Curonian Lagoon is a freshwater lagoon separated from the Baltic Sea by the Curonian Spit. Its surface area is 1,619 square kilometers (625 sq mi). The Neman River supplies about 90% of its inflows; its watershed consists of about 100,450 square kilometres in Lithuania and Russia's Kaliningrad Oblast.

Étang de Thau or Bassin de Thau is the largest of a string of lagoons (étangs) that stretch along the French coast from the Rhône River to the foothills of the Pyrenees and the border to Spain in the Languedoc-Roussillon. Although it has a high salinity, it is considered the second largest lake in France.

The lake Hóp is situated in the north of Iceland near Blönduós at the Húnafjörður.

The Inland Sea, sometimes called Qawra in Maltese and also known as Dwejra, is a lagoon of seawater on the island of Gozo linked to the Mediterranean Sea through an opening formed by a narrow natural arch.

Kamieński Lagoon is a lagoon on the Oder River in north-western Poland. It is part of the Dziwna.

Mar Menor is a coastal saltwater lagoon in the Iberian Peninsula located south-east of the Autonomous Community of Murcia, Spain, near Cartagena.

Szczecin Lagoon, also anglicized to Stettin Lagoon, is a lagoon in the Oder estuary, shared by Germany and Poland. It is separated from the Pomeranian Bay of the Baltic Sea by the islands of Usedom and Wolin. The lagoon is subdivided into the Kleines Haff in the West and the Wielki Zalew in the East. An ambiguous historical German name was Frisches Haff, which later exclusively referred to the Vistula Lagoon.

The Veerse Meer is a lagoon in the southwest Netherlands, in the province of Zeeland. It was separated from the North Sea in 1961 by the Delta Works dam system.

The Vistula Lagoon is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles wide, and up to 17 feet 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.