Coordinates: 54°28′59″N 18°57′31″E / 54.48306°N 18.95861°E / 54.48306; 18.95861
Gdańsk Bay or the Bay of Gdańsk or Danzig Bay (Polish: Zatoka Gdańska; Kashubian: Gduńskô Hôwinga; Russian: Гданьская бухта, Gdan'skaja bukhta, and German: Danziger Bucht) is a southeastern bay of the Baltic Sea. It is named after the adjacent port city of Gdańsk in Poland and is sometimes referred to as a gulf.
The western part of Gdańsk Bay is formed by the shallow waters of the Bay of Puck. The southeastern part is the Vistula Lagoon, separated by the Vistula Spit and connected to the open sea by the Strait of Baltiysk.
The bay is enclosed by a large curve of the shores of Gdańsk Pomerania in Poland (Cape Rozewie, Hel Peninsula) and the Kaliningrad Oblast of Russia (Sambian Peninsula). The coast of the bay features two very long sandspits, the Hel peninsula and the Vistula Spit. The first one defines the Bay of Puck, the latter one defines the Vistula Lagoon.
The maximum depth is 120 meters, and it has a salinity 0.7%.
Gdańsk ( /ɡəˈdænsk/ or /ɡəˈdɑːnsk/; Polish: [ˈɡdaɲsk]; German: Danzig, pronounced [ˈdantsɪç]) is a Polish city on the Baltic coast, at the center of the country's fourth-largest metropolitan area.
The city lies on the southern edge of Gdańsk Bay (of the Baltic Sea), in a conurbation with the city of Gdynia, spa town of Sopot, and suburban communities, which together form a metropolitan area called the Tricity (Trójmiasto), with a population of over 800,000. Gdańsk itself has a population of 455,830 (June 2010), making it the largest city in the Pomerania region of Northern Poland.
Gdańsk is Poland's principal seaport as well as the capital of the Pomeranian Voivodeship. It is also historically the largest city of the Kashubian region. The city is close to the former late medieval/modern boundary between West Slavic and Germanic lands and it has a complex political history with periods of Polish rule, periods of German rule, and extensive self-rule, with two spells as a free city. It has been part of modern Poland since 1945.