Barbie: Mermaidia or Barbie Fairytopia: Mermaidia is a 2006 direct-to-video computer-animated film directed by Walter P. Martishius and William Lau, and produced by Mainframe Entertainment. It is the 7th entry in the Barbie film series, a direct sequel to Barbie: Fairytopia and the 2nd film in the Barbie: Fairytopia series. The film stars Kelly Sheridan as the voice of Elina and Chiara Zanni as the voice of Nori. The plot follows shortly after the events of the previous movie, focusing on a now-full-fledged fairy named Elina and a mermaid named Nori who attempt to rescue Nalu, a merman prince, from the clutches of the evil Laverna. Like all the CGI Barbie films, dolls and toys were produced and released with the film. This was also the last Barbie film to be released on VHS.

Plot

After the events of the first film, Elina is having fun flying with her new wings, along with her friend, Dandelion, and puffball, Bibble, who notices that they are being followed. The person following them is the Sea-Butterfly, who tells Elina that the prince of the merpeople, Nalu, has been captured by Laverna's Fungi henchmen and begs her to help save him, to which Elina agrees.