Underwater diving sites in Poland

Hańcza (; ) is a lake in Suwałki Region, Podlaskie Voivodeship, Poland. It is 311.4 ha large, 4.5 km long and 1.2 km at its widest. It is the deepest lake in Poland with a maximum depth of 108.5 m. The Czarna Hańcza river flows through it.

Deepspot is a deep swimming pool and scuba diving training center, located near Warsaw in Mszczonów, Poland. It held the record for being the deepest swimming pool in the world until June 2021, when the Deep Dive Dubai was opened.

lake in Międzyrzecz County, Lubusz Voivodeship, Poland