|Song of Healing|
|Air Date||August 7, 2004|
|Previous episode:||Next episode:|
|Star Labyrinth||Love Detectives|
The King of the Squids, Somegorō, asks the Mermaid Princesses for help as his people are being terrorized by the Black Beauty Sisters.
- The Mermaid Princesses transform faster and their songs are more powerful when they are older.
- Somegorō almost died in that episode.
- It is revealed thet the songs of the Mermaid Princesses have so powerful healing abilities, that can revive dead people.