第 2 季 共 26 集
播出时间：2015年2月16日
第 1 集 The Seventh Cycle
播出时间：2015年2月16日
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.
第 2 集 Sticky Situation
播出时间：2015年2月23日
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.
第 3 集 Discovery
播出时间：2015年3月2日
When Zac has a powerful vision about his connection to Mako Island, he and the mermaids visit the island to investigate.
第 4 集 A New Tail
播出时间：2015年3月9日
Erik's curiosity about the girls and Mako Island becomes a problem when he decides to investigate further.
第 5 集 Bad For Business
播出时间：2015年3月16日
When Evie's dad decides to take tourists on dive charters to Mako Island, the gang must find a way to change his mind.
第 6 集 Stormy Seas
播出时间：2015年3月23日
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.
第 7 集 Awakening
播出时间：2015年3月30日
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.
第 8 集 Land School
播出时间：2015年4月6日
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.
第 9 集 Stowaway
播出时间：2015年4月13日
When a young mermaid follows Ondina back to Mako Island after a mermaid council meeting, it could spell trouble with the pod.
第 10 集 Keeping The Secret
播出时间：2015年4月20日
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.
第 11 集 Only As Young As You Feel
播出时间：2015年4月27日
Ondina adds too much jellyfish extract to Mimmi's body lotion, and the results put Principal Santos in dangerous waters at the marine park.
第 12 集 Supersized
播出时间：2015年5月4日
When Mimmi loses her moon ring in the Ocean Café's cooler room, it creates havoc for David and his brother's business.
第 13 集 Reunion
播出时间：2015年5月11日
On the night of the full moon, Zac and Erik swim to Mako Island and unlock the merman chamber, revealing a startling secret.
第 14 集 A New Man
播出时间：2015年5月18日
Zac struggles to come to terms with the news that he's a real merman, he's adopted and Mimmi is his sister.
第 15 集 Careful What You Wish For
播出时间：2015年5月25日
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.
第 16 集 First Date
播出时间：2015年6月1日
Ondina sneaks Erik into the grotto to duplicate a pearl he gave her, but she accidentally turns him into a copy of Poseidon.
第 17 集 The Merman Code
播出时间：2015年6月8日
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.
第 18 集 The Siren
播出时间：2015年6月15日
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.
第 19 集 Surprise!
播出时间：2015年6月22日
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.
第 20 集 The Job
播出时间：2015年6月29日
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.
第 21 集 New Orders
播出时间：2015年7月6日
On the night of the full moon, Zac and Ondina sneak away to Mako, and Ondina reveals her plan to destroy the chamber.
第 22 集 The Last Dance
播出时间：2015年7月13日
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.
第 23 集 Stay or Go
播出时间：2015年7月20日
At the marine park, Ondina and Mimmi get into trouble when a dolphin splashes them and a little girl sees them transform into mermaids.
第 24 集 The Truth About Evie
播出时间：2015年7月27日
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.
第 25 集 The Trident Stone
播出时间：2015年8月3日
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.
第 26 集 The Chosen One
播出时间：2015年8月10日
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.
