Sirena, Nixie and Lyla are part of a mermaid pod, which lives in the waters of Mako Island. 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 is given a fish-like tail and amazing powers.
Last Episode02x26 The Chosen One Aired: Aug. 07, 2015
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' m …
Series Fun Facts
- SPOILER: A second merman arrives in the beginning of season 2 named Erik. Also, two new mermaids named Mimmi and Ondina.
- There were rumors going around that there would only be 3 seasons. But in 2015 it was announced that there are going to be a 4th season, but no word about if there is going to be more.
- In the series finale of H2O: Just Add Water (AU), at the graduation ceremony, right before they call Bella onto the stage, they call forth Lucy Fry (played by Lucy Fry).