But, what is Mermaid Melody?

Lucia (or Luchia) is Mermaid Princess of the North Pacific Ocean, sets out to land to find the boy she saved from a shipwreck seven years ago, to who she had entrusted with her pink pearl. She eventually finds the boy: a surfer named Kaito Domoto. But Lucia has another form on land, a human form that Kaito doesn't recognize. She cannot tell Kaito who she really is because in mermaid folklore, if she tells a human who she really is, Lucia would turn into bubbles. She tries to convince Kaito into figuring out who she really is.

At the same time, Lucia has been told that a group of water creatures have invaded the marine world and she must gather the six other Mermaid Princesses and their pearls to bring back the legendary goddess, Aqua Regina, to stop them. To fulfill this, she joins forces with Hanon and Rina, Mermaid Princesses who came up to dry land, use their pearls, turn into singing idols, and use their voices as an offensive power.


Kaito and Lucia in her Mermaid Princess form.