Seasons & Episodes
Outcasts
It's a full moon and the three mermaids Nixie, Lyla and Sirena are tasked to guard Mako and the moon pool. While Zac and
Getting Legs
Sirena, Lyla and Nixie must turn Zac back into a land boy. Using Sirena's Moon Ring, they give themselves legs and walk
Meeting Rita
In trying to get the Moon Ring back, the mermaids uncover Rita's secret.
Lyla Alone
Nixie and Sirena won't help Lyla try to "zap" Zac's powers, so Lyla decides to do it alone. This misfires when a waitres
Blizzard
Lyla and Sirena attempt to use the Moon Ring to stop the rain, but instead make it snow indoors.
Dolphin Tale
Joe, David's brother has bought a new boat and decides to take it out for a spin. His fish finder locates a dolphin, but
Zac's Pool Party
Zac's struggle with his merman secret intensifies when his girlfriend, Evie decides to throw him a pool party.
Zac's Return to Mako
It's a full moon and the mermaids think that if they keep Zac out of the moonlight, he will lose his powers and return t
The Siren
While listening to Sirena sing, Lyla has an idea. If Sirena sings The Enchantment Song to Zac, he will fall under her sp
Zac Returns to Mako
Against Nixie and Sirena's advice, Lyla goes with Zac to Mako Island. She steals Rita's Moon Ring to open the land entra
I Don't Believe in Mermaids
The girls fear their pod will never return. A despondent Nixie gives "advice" to a young boy named Ben. Zac researches t
Close Call
Zac continues to try to find the trident. Lyla focuses on keeping him from it. Rita won't keep giving the girls money so
Betrayal
Rita and the girls worry about the upcoming full moon's effect on Zac. Nixie thinks they should let Zac find the triden
Battlelines
Zac starts to wonder why their principle, Rita, is helping Lyla, Nixie, and Sirena.
Sirena's Secret
David and Sirena's relationship continues to grow, while Nixie and Lyla are worried she won't want to return to the sea.
Truce
Cam gets a new phone and films Zac swimming.
Moon Ring 2
After finding a Moon Ring on the sea floor, Zac gives it to Evie. Now, the mermaids must get it back.
The Trident Job
Zac is being watched by the mermaids, but with Cam's help he evades them.
Where's the On Button
After acquiring the Trident, Zac doesn't know how to turn it on.
Nowhere to Hide
Zac must find a place to hide the Trident from the Mermaids.
Aquata Returns
Aquata returns saying Sirena can come back to the pod, but Lyla and Nixie can't.
Evie Times Two
Rita's cat is turned into a human after walking through a bunch of mermaid powders.
Zac's Choice
Zac leads Lyla to the Trident; they fight for control of it and Lyla is knocked unconscious.
Trust
Lyla teaches Zac about mer history and the ocean but Nixie doesn't trust him.
Betrayed
Nixie agrees to help Cam unlock the Trident, but Evie wants to come along.
Decision Time
Cam betrays Nixie after planning to become a merman and rule Mako.
The Seventh Cycle
When the pod decides Zac is a threat and must give up his merman powers, two new mermaids, Mimmi and Ondina, are sent to
Sticky Situation
With Evie now a mermaid, Mimmi and Ondina try a dangerous spell to change her back to a human form, but the results are
Discovery
When Zac has a powerful vision about his connection to Mako Island, he and the mermaids visit the island to investigate.
A New Tail
Erik's curiosity about the girls and Mako Island becomes a problem when he decides to investigate further.
Bad For Business
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
Sirena gives Evie mermaid lessons, which rubs Ondina the wrong way, while Erik tries to get to the bottom of Zac and Cam
Awakening
With the full moon approaching, Zac's plan to avoid Mako Island is dealt a blow when his father insists they go on their
Land School
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
Stowaway
When a young mermaid follows Ondina back to Mako Island after a mermaid council meeting, it could spell trouble with the
Keeping The Secret
When David sees Evie in the water as a mermaid, it puts Zac and the girls' secret at risk unless they can convince David
Only As Young As You Feel
Ondina adds too much jellyfish extract to Mimmi's body lotion, and the results put Principal Santos in dangerous waters
Supersized
When Mimmi loses her moon ring in the Ocean Café's cooler room, it creates havoc for David and his brother's business.
Reunion
On the night of the full moon, Zac and Erik swim to Mako Island and unlock the merman chamber, revealing a startling sec
A New Man
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
After Cam absorbs moon pool water, he discovers he has power over water, which gets him a place in the trials for the sc
First Date
Ondina sneaks Erik into the grotto to duplicate a pearl he gave her, but she accidentally turns him into a copy of Posei
The Merman Code
When Erik dives down and touches one of the rock outcrops on Mako reef, he's transported into a sphere of endless water
The Siren
When Sirena sees a video that shows a kayaker being lured by a mermaid's song, she starts to follow David obsessively, a
Surprise!
A surprise birthday party is in the works for Evie, who accidentally shrinks herself and falls into an aquarium after tr
The Job
Mimmi takes a job at the marine park, where she meets Chris, a young man who is desperate to get into a dolphin training
New Orders
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
Ondina doesn't want to choose between Erik and the pod when the pod returns. To cheer her up, Erik decides to throw a pa
Stay or Go
At the marine park, Ondina and Mimmi get into trouble when a dolphin splashes them and a little girl sees them transform
The Truth About Evie
When Evie comes down with a fever that causes the temperature in the room to soar, Carly suspects that her friend is kee
The Trident Stone
When Erik learns that the trident stone is the missing element needed to activate the merman chamber, Zac gives it to th
The Chosen One
The chamber's true purpose is revealed: to drain the magic from all mermaids. Zac risks his life to shut it down and res
A Visit from the East
Ondina is tasked with teaching the younger mermaids. A mermaid from China joins the pod. During a full moon ceremony, a
Seeing Is Believing
When marine park workers are sent to investigate the reported sea monster, the mermaids must create a credible explanati
Recipe for Success
Weilan casts a knowledge transference spell on Zac to help him pass a biology test. But more than just science facts tra
Mopping Up
When Evie tries using her new moon ring to magically finish her chores, things quickly get out of control. Joe makes an
The Puzzle Box
Weilan comes up with the idea of using a Chinese puzzle box to trap the sea dragon. Cam panics when Carly suggests they
New Beginnings
Evie's moon ring lesson with Ondina takes an unexpected turn. At the marine park, Mimmi discovers the reason for a rescu
Turning the Tide
Zac begs Weilan to teach him an Eastern spell few have mastered, which he hopes to use against the dragon. Joe encounter
The Way of the Dragon
On the eve of the full moon, Ondina and Mimmi defy Veridia's orders. Evie becomes suspicious when she spots Zac and Weil
Reversal of Fortune
After overhearing Ondina blaming her for Evie's loss, Weilan runs off. Meanwhile, Mimmi and Ondina combine their powers
Wishful Thinking
Zac realizes a shell he found has magical powers, and he accidentally sends the mermaids back in time five years, where
Lost and Found
While Ondina teaches the little mermaids to walk on land, her fastest-learning student wanders off and soon runs into Ch
Trust Issues
When Mimmi and Chris go on a date at the beach, Ondina goes to great lengths to protect her. Cam tries to lure more upsc
Letting Go
Mimmi and Zac are startled by a mysterious yet strangely familiar vision. Cam's dual role as Carly's boss and boyfriend
Age Before Beauty
Weilan mistakenly makes tea for Rita using a magic growth accelerator. Can the mermaids cure Rita before Mrs. Trumble ta
The Legend of Jiao Long
A priceless artifact recovered by a deep-sea treasure hunter provides a clue as to how the mermaids can defeat the water
Homecoming
The vision reappears to Mimi and Zac, this time speaking to them. Weilan learns a new detail about the dragon legend tha
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