Mermaid Melody

Genre: Magical Girl
Season 1: 52 episodes
Season 2: 39 episodes

Lucia, the mermaid princess of the North Pacific ocean, sets out on land to find the boy she saved seven years ago from a tsunami wave, whom she entrusted her pink pearl to. She soon finds him, a surfer named Kaito Domoto. Kaito doesn't recognize her in her human form, but she can't tell him who she really is, or legend has it that she will turn to bubbles. She drops hints to Kaito and tries to convince him that she is the mermaid without actually telling him.

Lucia also goes onto land because she has been told that a group of water demons have invaded the sea, and she must gather all six of the other mermaid princesses along with their pearls to bring back to Aqua Regina, the sea goddess. She eventually joins Hanon and Rina, two other mermaid princesses, to aid her. A mermaid princess's pearls can be turned into a microphone, and when sang through it, it can also be used as a weapon towards villains, causing pain upon them.