Fairies and Mermaids

 is the seventeenth episode of the third season of Star Teens Unite!.

Summary
The Star Teens, Nemo and her mermaids, and Daisybelle and her fairies work together to save their ocean kingdom and fairy kingdom from pollution caused by a local monster-made factory.

Characters

 * Ella
 * Inidra
 * Sandra
 * Felicia
 * Lisa
 * Tanya
 * Sheila
 * Veronica
 * Nemo
 * Princess Maris
 * Queen Coral
 * Daisybelle and the fairies

Voice Cast

 * Aimee Carrero - Tanya
 * Ariel Winter - Nemo, Fairy
 * Ava Acres - Fairy
 * Candi Milo - Nemo's Sister #6
 * Cree Summer - Nemo's Sister #7
 * Grey Griffin - Sandra, Nemo's Sister #1
 * Isabella Acres - Fairy
 * Jennifer Hale - Veronica, Nemo's Sister #2
 * Jessie Flower - Princess Maris
 * Jodi Benson - Queen Coral
 * Kari Wahlgren - Ella, Nemo's Sister #4
 * Kate Micucci - Inidra
 * Kath Soucie - Nemo's Sister #3
 * Kimberly Brooks - Sheila
 * Madison Pettis - Daisybelle
 * Michaela Zee - Fairy
 * Tara Strong - Felicia, Nemo's Sister #5
 * Vyvan Pham - Lisa

Trivia

 * In this episode, at its beginning, Ella and the girls are playing bowling at Kings Bowl in International Drive.
 * Nemo, her sisters, Maris, Queen Coral, Daisybelle and her fairies all return.
 * Due to health concerns from a pollution, Daisybelle and her fairies wear leaves and flower petals as masks to cover their faces, and Queen Coral, Princess Maris, Nemo, and their mermaids wear starfish and scallop shells as masks to cover their faces as well.