Season 3

E1. A New Man

May 17, 2015 · 24m

Zac struggles to come to terms with the news that he's a real merman, he's adopted and Mimmi is his sister.

E2. Careful What You Wish For

May 24, 2015 · 24m

After Cam absorbs moon pool water, he discovers he has power over water, which gets him a place in the trials for the school swim team.

E3. First Date

May 31, 2015 · 24m

Ondina sneaks Erik into the grotto to duplicate a pearl he gave her, but she accidentally turns him into a copy of Poseidon.

E4. The Merman Code

Jun 7, 2015 · 24m

When Erik dives down and touches one of the rock outcrops on Mako reef, he's transported into a sphere of endless water with no way out.

E5. The Siren

Jun 14, 2015 · 24m

When Sirena sees a video that shows a kayaker being lured by a mermaid's song, she starts to follow David obsessively, and he falls under her spell.

E6. Surprise!

Jun 21, 2015 · 24m

A surprise birthday party is in the works for Evie, who accidentally shrinks herself and falls into an aquarium after trying on Mimmi's mood ring.

E7. The Job

Jun 28, 2015 · 24m

Mimmi takes a job at the marine park, where she meets Chris, a young man who is desperate to get into a dolphin training program.

E8. New Orders

Jul 5, 2015 · 24m

On the night of the full moon, Zac and Ondina sneak away to Mako, and Ondina reveals her plan to destroy the chamber.

E9. The Last Dance

Jul 12, 2015 · 24m

Ondina doesn't want to choose between Erik and the pod when the pod returns. To cheer her up, Erik decides to throw a party in the café.

E10. Stay or Go

Jul 19, 2015 · 24m

At the marine park, Ondina and Mimmi get into trouble when a dolphin splashes them and a little girl sees them transform into mermaids.

E11. The Truth About Evie

Jul 26, 2015 · 24m

When Evie comes down with a fever that causes the temperature in the room to soar, Carly suspects that her friend is keeping a secret from her.

E12. The Trident Stone

Aug 2, 2015 · 24m

When Erik learns that the trident stone is the missing element needed to activate the merman chamber, Zac gives it to the mermaids for safekeeping.

E13. The Chosen One

Aug 9, 2015 · 24m

The chamber's true purpose is revealed: to drain the magic from all mermaids. Zac risks his life to shut it down and restore the mermaids' magic.