Szczecin Lagoon

The Szczecin Lagoon is a shallow estuarine lagoon on the Oder River mouth straddling the German-Polish border, separated from the open Baltic Sea by the islands of Usedom and Wolin. It is an important coastal waterbody supporting fisheries, ports and varied birdlife.

The lagoon links to the Baltic Sea via several straits and channels and receives freshwater inflows from the Oder and tributary rivers, forming a brackish transition zone. Recreational sailing, fishing and birdwatching are common visitor activities along its shores.

The lagoon formed after the last glaciation and has long been an area of navigation and settlement; towns and ports on its margins have historically used it as a sheltered harbour and trade route. Management of water levels, shipping channels and ecological habitats remain important for local economies and conservation.

Geographically it lies on the southern Baltic coast between Germany’s Mecklenburg-Vorpommern and Poland’s West Pomeranian region, bounded to the north by the islands that separate it from the open sea.

• Ecology and navigation: The lagoon is an important shallow-water ecosystem that supports fisheries, salt marshes and migratory birds; seasons and tides affect navigability and wildlife activity.
• Access and seasonality: Major ports and towns on the lagoon's shores provide access for recreational sailing, fishing and coastal tourism; summer offers the best weather for boating.