Phylla

Phylla is a Selkie and she is the gatekeeper of Earth's ocean portal.

Appearance
She has yellow skin and a cyan and yellow body-tail. She wears a yellow hat with a ruffly blue ribbon, accompanied by a red translucent shawl. The symbol on her forehead is shaped like heart with curly lines coming out of its bottom. This symbol is orange.

Personality
Phylla seems to be determined to keep Gate between Earth and Andros safe. Like other Selkies, she is easily frightened by bigger creatures like King Neptune or Tritannus. She only speaks in third person and with proper nouns. She also has showed some courage as she told Tritannus that she will return and defeat him.

Season 5
Phylla is the first Selkie to appear in the season. When an oil spill occurred near Gardenia, she and one of the guardians of Andros noticed the oil underwater. Phylla tried to stop it with her powers, but the toxic was stronger than her magic and went through the Gate to Andros.

Phylla and the Andros guardian followed through the gate, meeting immediately with Lemmy, gatekeeper of the Andros gate, and another Andros guardian. Lemmy tried to help Phylla stop oil again, but the oil just kept its travel towards the Prison of Andros, where Tritannus absorbed its powers and become a monster. He attacked the prison guards, turning them into muted monsters. Phylla and Lemmy tried to go seek for help, but Tritannus trapped them and absorbs their powers and haves an idea of absorbing powers from all Selkies in order to travel into Infinite Ocean.

Phylla and Lemmy tells King Neptune about this and are frightened by his angry reaction. Later, Phylla along with Lemmy, Illiris and Nissa meets with King Neptune again, to tell him what had happened to Queen Ligea and Nereus.

Phylla escapes with Lemmy and Illiris when Tritannus shows up and turns King Neptune and Tressa into mutants and steals Nissa's powers. Before leaving Phylla angrily tells Tritannus that she will return with help and defeat him.

When Icy and Tritannus release pollution into the seas of Earth in "Saving Paradise Bay", Phylla is the one who warns the Winx in a meeting on Domino.

Trivia

 * She is the youngest selkie.
 * Phylla loses her magical powers in the episode The Rise of Tritannus, but she seems to have them back in The Secret of the Ruby Reef which is strange because she never bonded with any of the Winx Club fairies to do so.
 * For a strange reason, she didn't appear in Sirenix when all the selkies face Tritannus.
 * Maybe she's the Selkie of Roxy.