Bo Jakobsen
Benny (voice)

Jesper Klein
Tadpole (voice)

Peter Belli
Octopus (voice)

Jytte Abildstrøm
Dagny (voice)

Otto Brandenburg
Lobster Boy (voice)

Rolf Krogh
Ornithologist (voice)

Povl Dissing
First Pirate (voice)

Per Goldschmidt
Second Pirate (voice)

Aya
Mermaid (voice)

Maia Årskov
Mermaid (voice)

Trille
Mermaid (voice)

Christian Sievert
Crab (voice)

Allan Botschinsky
Seahorse (voice)