Hydrozagadka

Józef Nowak

as Jan Walczak / As

Zdzisław Maklakiewicz

as Doctor Plama

Roman Kłosowski

as Prince Maharaja

Wiesław Gołas

as Taxi Driver

Wiesław Michnikowski

as Professor Milczarek

Iga Cembrzyńska

as TV Presenter / Waitress

Wiesława Mazurkiewicz

as Flower Seller

Emilia Nowak

as Belly Dancer

Ewa Szykulska

as Jola

Jerzy Dobrowolski

as Interpreter

Jerzy Duszyński

as Frątczak

Bolesław Kamiński

as Little Man

Czesław Lasota

as Walczak's Friend

Franciszek Pieczka

as Sailor

Wojciech Pokora

as Walczak's Friend

Wojciech Rajewski

as Walczak's Friend

Witold Skaruch

as Walczak's Friend

Jerzy Turek

as Watchman

Zygmunt Apostoł

as Walczak's Friend (uncredited)

Andrzej Kondratiuk

as Ferry Driver (uncredited)

Tomasz Lengren

as Man at Party (uncredited)

Tadeusz Pluciński

as Jurek (uncredited)

Zbigniew Sawan

as Porter (uncredited)

Kazimierz Stankiewicz

as Maharaja's Wife (uncredited)

Jarosław Świtoniak

as Scientific Worker (uncredited)

Michał Żołnierkiewicz

as Scientific Worker (uncredited)

Marian Łącz

as Party Guest (voice) (uncredited)

Jan Suzin

as Scientific Worker (voice) (uncredited)