Lucia is the new girl at school. She and her sister run a public bath that's all the rage. When Lucia meets a terrific-looking surfer boy, there's just one little problem: Lucia is a mermaid-not just any mermaid, but a princess on an important mission to save the seven seas from an evil force bent on taking control of the marine world. Such a responsibility doesn't leave much time for romance. But Lucia vows to protect her world and win the heart of handsome Kaito. (Source: Del Rey) https://myanimelist.net/manga/423/Pichi_Pichi_Pitch__Mermaid_Melody https://www.mangaupdates.com/series/lws0lt6/pichi-pichi-pitch I was able to find the complete manga in a cbz format on archive.org. They seem to be scans of the official English translation that was published. Another anidex upload from my friend.