DVD Region 4. With the entire Magical realm in peril, can the Winx Club succeed on their most challenging quest yet - to attain the power of Sirenix and defeat the evil Tritannus in an undersea battle? With help from the Selkies, their newfound friends, Bloom, Stella, Aisha, Flora, Tecna and Musa take us on a deep-sea thrill ride in this spine-tingling conclusion to Season 5 of Winx Club! . Actors: Isabella Murad. Director: 0 . Languages: English . Subtitles: 0 . Running Time: 141 minutes approx . Discs: 1