Barbie Fairytopia: Mermaidia (2006)

Elina, a winged flower-fairy, faces a new threat when her friend Nalu, the merman prince, is captured by the wicked Laverna’s henchmen. Laverna seeks the powerful Immunity Berry, which would grant her control over all Fairytopia. To save Nalu and protect her world, Elina teams up with Nori, a reluctant but brave mermaid who initially distrusts outsiders. Together, with the help of her faithful pet Bibble, Elina ventures into the depths of Mermaidia.