* H2O: Just Add Water (2006-2010): This Australian TV show features Claire Holt, Phoebe Tonkin, and Indiana Evans as the main characters.
* H2O: Mermaid Adventures (2012-2013): This spin-off series features the same concept with a new cast, including Lucy Fry, Ivy Latimer, and Carrie Galvin.
Please clarify the title of the film/show you are referring to, and I can provide you with the cast information.