Episode 1

When the pearls powering Mertropia start to fade, Princess Merlinda must break the rules and swim beyond her mermaid home to save her father's life force.

Episode 2

Nerissa and Sasha look for Merlinda on land. But with her communication bracelet broken, the princess will have to trust her new human friends.

Episode 3

Celia and Tyler help Merlinda, Nerissa and Sasha adjust to their new school above the surface and try to find answers about their missing map.

Episode 4

A whale rescue leads Merlinda and her friends further on their quest to find more pearls — but danger is waiting below the surface.

Episode 5

A day at the amusement park proves relaxing — and perilous — when the gang's greatest threat makes an appearance. Alex sets out on his own mission.

Episode 6

While Merlinda, Nerissa and Sasha use their powers to help Tyler and Celia save the rescue center, Barbarossa and Tempesta concoct a plan of their own.

Episode 7

The group continues their search for the missing pearls inside a dormant volcano. But Barbarossa is waiting in the shadows to disrupt their plans.

Episode 8

As Merlinda, Nerissa, Sasha and Alex make their way back to Mertropia, they discover that an unwelcome force has entered through the portal.

Episode 9

An old foe becomes a friend as Merlinda returns to Pirate Cove to try and save Nerissa, Alex and the pearls. Fred learns the truth about his father.

Episode 10

With a newfound confidence, Merlinda is ready to defeat Barbarossa once and for all. Will she be able to save her friends — and Mertropia?