This article is about the third season of the Mako: Island of Secrets series. To view the third season of H2O: Just Add Water click here.

Mermaids in Moon Pool

When a Chinese mermaid named Weilan runs into the Water Dragon that destroyed her pod, she flees to Mako Island with the creature in pursuit. Mermaids Ondina, Mimmi and Weilan must defend Mako Island and the Gold Coast from destruction.




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Image Title Original Airdate Episode
Mako-S3E1 A Visit From The East May 27, 2016 01 3.01
Ondina is tasked with teaching the younger mermaids. A mermaid from China joins the pod. During a full moon ceremony, a terrifying beast emerges.
Chris in Front of Moon Pool
Seeing Is Believing May 27, 2016 02 3.02
When marine park workers are sent to investigate the reported sea monster, the mermaids must create a credible explanation to stop further inquiries.
Dry Plankton the Baltic Sea Recipe For Success May 27, 2016 03 3.03
Weilan casts a knowledge transference spell on Zac Blakely to help him pass a biology test. But more than just science facts transfer from her body to his!
Evie and Mop Mopping Up May 27, 2016 04 3.04
When Evie tries to using her new moon ring to magically finish her chores, things quickly get out of control. Joe makes an upsetting announcement.
Weilan and Box Secrets The Puzzle Box May 27, 2016 05 3.05
Weilan comes up with the idea of using a Chinese puzzle box to trap the sea dragon. Cam panics when Carly suggests they take dance lessons.
Evie Levitating Weilan and Ondina New Beginnings May 27, 2016 06 3.06
Evie's moon ring lesson with Ondina takes an unexpected turn. At the Marine Park, Mimmi discovers the reason for a rescued dolphin's distress.
Mako-S3E7 Turning The Tide May 27, 2016 07 3.07
Zac begs Weilan to teach him an eastern spell few have mastered, which he hopes to use against the dragon. Joe encounters a water ball.
Mako-S3E8 The Way of the Dragon May 27, 2016 08 3.08
On the eve of the full moon, Ondina and Mimmi defy Veridia's orders. Evie becomes suspicious when she spots Zac and Weilan meeting in secret again.
Water Dragon Scroll Reversal of Fortune May 27, 2016 09 3.09
After overhearing Ondina blaming her for Evie's loss, Weilan runs off. Meanwhile, Mimmi and Ondina combine their powers to try to restore Evie.
Wishing Shell Wishful Thinking May 27, 2016 10 3.10
Zac realizes a shell he found has magical powers, and he accidentally sends the mermaids back in time five years, where they meet his younger self.
Hatchlings Mermaids Lost And Found May 27, 2016 11 3.11
While Ondina teaches the little mermaids to walk on land, her fastest-learning student wanders off and soon runs into Chris and Karl on the beach.
Ondina Spying Trust Issues May 27, 2016 12 3.12
When Mimmi and Chris go on a date at the beach, Ondina goes to great lengths to protect her. Cam tries to lure more upscale customers to the cafe.
Mako-S3E13 Letting Go May 27, 2016 13 3.13
Mimmi and Zac are startled by a mysterious yet strangely familiar vision. Cam's dual role as Carly's boss and boyfriend becomes difficult to manage.
Mako-S3E14 Age Before Beauty May 27, 2016 14 3.14
Weilan mistakenly makes tea for Rita using a magic growth accelerator. Can the mermaids cure Rita before Mrs. Trumble takes over principal job?
Mako-S3E15 The Legend of Jiao Long May 27, 2016 15 3.15
A priceless artifact discovered by a deep-sea treasure hunter provides a clue as to how the mermaids can defeat the water dragon.
Mimmi Using Bracelet Homecoming May 27, 2016 16 3.16
The vision reappears to Mimmi and Zac, this time speaking to them. Weilan learns a new detail about the dragon legend that suggest Nerissa is still alive.


  • Linda Ngo became main cast.
  • Cariba Heine appears in the season finale as Rikki Chadwick from H2O: Just Add Water.
  • Production finished in July 2015.
  • Unlike Season 1 and 2, which both have 26 episodes, season 3 only has 16 episodes, making it the season with the least amound of episodes.
  • Evie loses her tail and powers in The Way of the Dragon.
  • All three mermaids in this season are from separate origins: Ondina is a mermaid from the South; Mimmi from the North; and Weilan from the East.