Merillia is the life force of the ocean in the Barbie in A Mermaid Tale movies. The ability to create it is granted at exactly midday during the Changing of the Tides Ceremony, which takes place in the underwater city of Aquellia.

If the person who spins Merillia is upset, then their Merillia becomes weaker and weaker. Without a change, the Merillia slowly poisons Oceana. When Queen Calissa was imprisoned by Eris, her Merillia was not strong enough for the sea to remain healthy. It only improved when Merliah released her.

Merliah gets distracted when at the end of the movie, she has gotten the power to make Merillia

Barbie in A Mermaid Tale
Barbie in A Mermaid Tale logo

Quotes: "What makes you different just might be your greatest strength." | "It feels good to be a part of something bigger than yourself."

Media: Barbie in A Mermaid Tale | Barbie in A Mermaid Tale 2

Characters: Alistair | Ally Mahoney | Ambassador Kattrin | Ambassador Mirabella | Ambassador Renata | Ambassador Selena | Break | Dreamfish | Eris | Fallon Casey | Georgie Majors | Hadley | Kayla | Kylie Morgan | Lipstick Fish | Merliah Summers | Pufferazzi | Queen Calissa | Remo | Rip | Snouts | Stargazers | Syrenka | Syrenka's Pet Fish | The Destinies | Xylie | Zuma

Locations: Aquellia | Kayla and Xylie's Boutique | Malibu California, United States | Oceana | Sydney, Australia |

Objects: Merliah's Necklace

Songs: "Do The Mermaid" | "Queen of the Waves" | "Queen of the Waves (Eris Version)" | "Show Me Some Love" | "Summer Sunshine" | "Walking on Sunshine"

Other: A Mermaid Tale Merchandise | A Mermaid Tale 2 Merchandise