Miroslava Šafránková
The Little Mermaid
Radovan Lukavský
King of All Seas
Petr Svojtka
Prince of the Southern Empire
Marie Rosůlková
Grandmother
Milena Dvorská
Witch
Libuše Šafránková
Princess from the Neighboring Empire
Jiří Ornest
Prince's Aide
Dagmar Patrasová
Little Mermaid's First Sister
Jiřina Krejčíková
Queen of the Blue Sea
Alexej Okuněv
King of the Ice Sea
Jaroslava Schallerová
Queen of the Ice Sea
Milan Hein
King of the Yellow Sea
Jana Švandová
Queen of the Yellow Sea
Jan J. Vágner
Prince of the Sea of the Setting Sun
Jiří Světlík
King of the Black Sea
Andrea Čunderlíková
Queen of the Black Sea
Petr Skarke
King of the Yellow Sea (voice)
Petr Svoboda
Prince of the Sargasso Sea
Shizuka Ishikawa
Oriental Princess
Dana Kubálková
European Princess
Venuse Samesová
Black Princess
Milena Steinmasslová
Hispanic Princess
Jaroslav Heyduk
Ceremonial of the Neighboring Empire
Vladimír Pospíšil
Ship Captain
Jindřich Narenta
Counselor
Hana Talpová
Queen
Josef Vondráček
Old Fisherman
Karel Anderle
Fencer
Pavel Vlasák
Fencer
Jiří Flíček
Guest on the Golden Ship
Miroslav Krejča
Guest on the Golden Ship
Pavel Robin
Guest on the Golden Ship
Milan Pěkný
Guest on the Golden Ship
Miloš Švarc
Guest on the Golden Ship
Jan Pohan
King of the Neighboring Empire
Inka Čekanová
Queen of the Neighboring Empire
Pavel Jiras
Fisherman
Jan Gottlieb
Fisherman's Son
Pavel Šmok
Conductor
Bert Schneider
Underwater Ceremonial
Karel Engel
Experienced Sailor
Zdeněk Srstka
Sailor
Miroslav Jíra
Sailor
Jaroslav Klenot
Sailor
Jiří Klenot
Sailor
Ivana Maříková
Girl
Marta Richterová
Prince Mother's Lady-in-waiting
Vladimír Fürst
Nobleman
Klára Frydrychová
Child of the King of the Blue Sea
Peter Bamidele Jzirein
Black Princess Company
Joseph Ig Nigeria Eboreime
Black Princess Company
Pavel Rímský
King of the Ice Sea Company
Zdeněk Boubelík
Dancer
Eva Boubelíková
Dancer
Petr Novák
Esquire
Karel Schumpeter
Diver
Luděk Munzar
Narrator (voice)