The story of a beautiful mermaid who gave up a kingdom for her beloved prince.
| Actor | Role |
|---|---|
 Fumie KashiyamaMarina (voice) | Marina (voice) |
 Mariko MiyagiFritz the Dolphin (voice) | Fritz the Dolphin (voice) |
 Tarō ShigakiPrince (voice) | Prince (voice) |
 Ichiro NagaiWhistler (voice) | Whistler (voice) |
 Kenichi OgataOval Shark (voice) | Oval Shark (voice) |
 Haruko KitahamaWitch (voice) | Witch (voice) |
 Miyoko AsoMermaid Crone (voice) | Mermaid Crone (voice) |
 Kazuko SugiyamaMarina's Sister (voice) | Marina's Sister (voice) |
 Kazuko SawadaJemmy the Cat (voice) | Jemmy the Cat (voice) |
 Nana YamaguchiPrince's Mother (voice) | Prince's Mother (voice) |
 Rihoko YoshidaSuomi Princess (voice) | Suomi Princess (voice) |
 Kaneta KimotsukiCrab / Conch (voice) | Crab / Conch (voice) |
 Kosei TomitaDuke the Whale (voice) | Duke the Whale (voice) |
 Hidekatsu ShibataMermaid King (voice) | Mermaid King (voice) |