Real-life mermaids, Sirena, Nixie and Lyla are part of a mermaid pod, which lives in the waters of Mako Island. As young members of the pod, it is their job to protect the Moon Pool and guard it from trespassers. But on the night of a full moon, the mischievous mermaid girls neglect their duties. Sixteen-year-old land-dweller Zac enters the Moon Pool and forms a special connection with Mako. Zac is given a fish-like tail and amazing powers. The mermaid pod is forced to leave Mako, leaving behind the three mermaid girls, cast out of the pod. They know there's only one way they will be allowed to rejoin the pod: They must get legs, venture onto land and take back Zac's powers – or risk being outcasts forever.
The Seventh Cycle 6.2
Air date: 2015-02-15
Runtime: 24 min
Overview: When the pod decides Zac is a threat and must give up his merman powers, two new mermaids, Mimmi and Ondina, are sent to make sure he obeys.
Sticky Situation 10.0
Air date: 2015-02-22
Runtime: 24 min
Overview: With Evie now a mermaid, Mimmi and Ondina try a dangerous spell to change her back to a human form, but the results are less than ideal.
Discovery 0.0
Air date: 2015-03-01
Runtime: 24 min
Overview: When Zac has a powerful vision about his connection to Mako Island, he and the mermaids visit the island to investigate.
A New Tail 0.0
Air date: 2015-03-08
Runtime: 24 min
Overview: Erik's curiosity about the girls and Mako Island becomes a problem when he decides to investigate further.
Bad For Business 0.0
Air date: 2015-03-15
Runtime: 24 min
Overview: When Evie's dad decides to take tourists on dive charters to Mako Island, the gang must find a way to change his mind.
Stormy Seas 10.0
Air date: 2015-03-22
Runtime: 24 min
Overview: Sirena gives Evie mermaid lessons, which rubs Ondina the wrong way, while Erik tries to get to the bottom of Zac and Cam's falling out.
Awakening 0.0
Air date: 2015-03-29
Runtime: 24 min
Overview: With the full moon approaching, Zac's plan to avoid Mako Island is dealt a blow when his father insists they go on their annual camping trip.
Land School 0.0
Air date: 2015-04-05
Runtime: 24 min
Overview: When Mimmi goes to the first day of the new school year, things get out of hand fast when she runs afoul of the science teacher.
Stowaway 0.0
Air date: 2015-04-12
Runtime: 24 min
Overview: When a young mermaid follows Ondina back to Mako Island after a mermaid council meeting, it could spell trouble with the pod.
Keeping The Secret 10.0
Air date: 2015-04-19
Runtime: 24 min
Overview: When David sees Evie in the water as a mermaid, it puts Zac and the girls' secret at risk unless they can convince David he's wrong.
Only As Young As You Feel 0.0
Air date: 2015-04-26
Runtime: 24 min
Overview: Ondina adds too much jellyfish extract to Mimmi's body lotion, and the results put Principal Santos in dangerous waters at the marine park.
Supersized 0.0
Air date: 2015-05-03
Runtime: 24 min
Overview: When Mimmi loses her moon ring in the Ocean Café's cooler room, it creates havoc for David and his brother's business.
Reunion 0.0
Air date: 2015-05-10
Runtime: 24 min
Overview: On the night of the full moon, Zac and Erik swim to Mako Island and unlock the merman chamber, revealing a startling secret.
A New Man 1.0
Air date: 2015-05-17
Runtime: 24 min
Overview: Zac struggles to come to terms with the news that he's a real merman, he's adopted and Mimmi is his sister.
Careful What You Wish For 0.0
Air date: 2015-05-24
Runtime: 24 min
Overview: 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.
First Date 6.0
Air date: 2015-05-31
Runtime: 24 min
Overview: Ondina sneaks Erik into the grotto to duplicate a pearl he gave her, but she accidentally turns him into a copy of Poseidon.
The Merman Code 0.0
Air date: 2015-06-07
Runtime: 24 min
Overview: 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.
The Siren 0.0
Air date: 2015-06-14
Runtime: 24 min
Overview: 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.
Surprise! 0.0
Air date: 2015-06-21
Runtime: 24 min
Overview: 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.
The Job 0.0
Air date: 2015-06-28
Runtime: 24 min
Overview: 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.
New Orders 0.0
Air date: 2015-07-05
Runtime: 24 min
Overview: On the night of the full moon, Zac and Ondina sneak away to Mako, and Ondina reveals her plan to destroy the chamber.
The Last Dance 10.0
Air date: 2015-07-12
Runtime: 24 min
Overview: 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.
Stay or Go 0.0
Air date: 2015-07-19
Runtime: 24 min
Overview: At the marine park, Ondina and Mimmi get into trouble when a dolphin splashes them and a little girl sees them transform into mermaids.
The Truth About Evie 0.0
Air date: 2015-07-26
Runtime: 24 min
Overview: 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.
The Trident Stone 0.0
Air date: 2015-08-02
Runtime: 24 min
Overview: 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.
The Chosen One 0.0
Air date: 2015-08-09
Runtime: 24 min
Overview: 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.
