Air date: 2015-02-15

Runtime: 24 min

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.

Air date: 2015-02-22

Runtime: 24 min

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.

Air date: 2015-03-01

Runtime: 24 min

When Zac has a powerful vision about his connection to Mako Island, he and the mermaids visit the island to investigate.

Air date: 2015-03-08

Runtime: 24 min

Erik's curiosity about the girls and Mako Island becomes a problem when he decides to investigate further.

Air date: 2015-03-15

Runtime: 24 min

When Evie's dad decides to take tourists on dive charters to Mako Island, the gang must find a way to change his mind.

Air date: 2015-03-22

Runtime: 24 min

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.

Air date: 2015-03-29

Runtime: 24 min

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.

Air date: 2015-04-05

Runtime: 24 min

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.

Air date: 2015-04-12

Runtime: 24 min

When a young mermaid follows Ondina back to Mako Island after a mermaid council meeting, it could spell trouble with the pod.

Air date: 2015-04-19

Runtime: 24 min

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.

Air date: 2015-04-26

Runtime: 24 min

Ondina adds too much jellyfish extract to Mimmi's body lotion, and the results put Principal Santos in dangerous waters at the marine park.

Air date: 2015-05-03

Runtime: 24 min

When Mimmi loses her moon ring in the Ocean Café's cooler room, it creates havoc for David and his brother's business.

Air date: 2015-05-10

Runtime: 24 min

On the night of the full moon, Zac and Erik swim to Mako Island and unlock the merman chamber, revealing a startling secret.

Air date: 2015-05-17

Runtime: 24 min

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

Air date: 2015-05-24

Runtime: 24 min

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.

Air date: 2015-05-31

Runtime: 24 min

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

Air date: 2015-06-07

Runtime: 24 min

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.

Air date: 2015-06-14

Runtime: 24 min

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.

Air date: 2015-06-21

Runtime: 24 min

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.

Air date: 2015-06-28

Runtime: 24 min

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.

Air date: 2015-07-05

Runtime: 24 min

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

Air date: 2015-07-12

Runtime: 24 min

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.

Air date: 2015-07-19

Runtime: 24 min

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

Air date: 2015-07-26

Runtime: 24 min

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.

Air date: 2015-08-02

Runtime: 24 min

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.

Air date: 2015-08-09

Runtime: 24 min

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.