People living at a seashore town are frightened by reports of an unknown creature called "the sea devil". Nobody knows what it is, but it's really the son of doctor Salvator. The doctor performed surgery on his son and now young Ichtiander can live under water. This gives him certain advantages, but also creates a lot of problems.
Владимир Коренев
as Ichtyandr Salvator
Анастасия Вертинская
as Gutiere Baltazar
Михаил Козаков
as Pedro Zurita
Анатолий Смиранин
as Old Baltazar
Николай Симонов
as Prof. Salvator
Владлен Давыдов
as Olsen
Юрий Медведев
as street vendor of fish
Александр Захаров
as policeman
Kirill Laskari
as dancer in a pub
Nina Bolshakova
as singer
Тито Ромалио
as newspaper delivery boy
