Jul. 07, 2006
30 min.
Nickelodeon TV Network

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H2O: Just Add Water (AU) tv show photo

H2O: Just Add Water (AU)

When three normal teenage girls stumble upon a ancient cave they undergo a transformation that will change their lives forever. H2O: Just Add Water, sees three very different girls facing everyday teen problems with an added twist - they're mermaids with incredible powers over water.

H2O: Just Add Water (AU) - 03x26 Graduation Screenshot
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4.7/5 (10 votes)

Last Episode

03x26 Graduation Aired: Apr. 16, 2010

Just before the gang's graduation, comet Eva approaches, which they work out is attracted by the moon cave crystals and nearly caused …

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The show had 3 seasons and 79 episodes air between 2006 and 2010.

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Character Guide

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Series Fun Facts

More Trivia
  • SPOILER: In the final episode of season 3, during graduation a girl is called Lucy Fry. In the spin off series Mako Mermaids: An H2O Adventure, she becomes one of the main mermaids.
  • SPOILER: Phoebe Tonkin and Cariba Heine, who play Cleo Sertori and Rikki Chadwick respectively, are the only actresses who appear in every episode of the series.
  • Nickelodeon advertised a 15 minute sneak peek two weeks before the show was aired.
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