Episode Title:
Sirenix.
Episode Description:
Tritannus and the Trix steal Daphne's Sirenix and gives it to the Trix as Dark Sirenix. Meanwhile, the Winx Club have collected all three gems of Sirenix and obtain the Sirenix power, and they enter the Infinite Ocean. Omnia, the Guardian of Sirenix, tells them they each get a wish but after they have pleased destiny. Tritannus has all of the Selkies' powers, and together with the Trix, he enters the Infinite Ocean as well with Daphne still his captive.
