Gdynia Aquarium (Polish: Akwarium Gdyńskie) is a public aquarium and sea museum operated by the National Marine Fisheries Research Institute in Gdynia, Poland.
Previously called the Oceanographic Museum and Sea Aquarium of the Sea Fisheries Institute in Gdynia (1971-2003), the aquarium has a zoological garden status and is situated along Aleja John Paul II on the South Pier.
Exhibitions presented within the museum are on oceanography and hydrobiology, while the aquarium contains both sea and freshwater flora and fauna.
In 2007 a Wet Room was opened - a place where one can put their hands into an open-top aquarium tank and touch fish.
The Marine Education Section was expanded with a Preschool Room full of soft marine toys, which is very frequently visited by the youngest school children.