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H2O: Just Add Water (2006– )

TV Series  |  TV-PG  |   |  Drama, Family, Fantasy
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Ratings: 7.2/10 from 7,861 users  
Reviews: 28 user | 5 critic

Three girls become mermaids after a mysterious island transforms them and gives them special powers.

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2 wins & 6 nominations. See more awards »



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Series cast summary:
Cariba Heine ...
 Rikki Chadwick (78 episodes, 2006-2010)
 Cleo Sertori (78 episodes, 2006-2010)
Angus McLaren ...
 Lewis McCartney (66 episodes, 2006-2010)
Burgess Abernethy ...
 Zane Bennett (53 episodes, 2006-2010)
 Emma Gilbert (52 episodes, 2006-2008)
Alan David Lee ...
 Don Sertori (51 episodes, 2006-2010)
 Kim Sertori (40 episodes, 2006-2010)
Jamie Timony ...
 Nate (36 episodes, 2006-2010)


When three normal teenage girls stumble upon a ancient cave they undergo a transformation that will change their lives forever. H20 - Just Add Water, sees three very different girls facing everyday teen problems with an added twist - they're mermaids with incredible powers over water. Written by Australian Television Information Archive

Plot Summary | Add Synopsis


Do you believe in mermaids?


Drama | Family | Fantasy


TV-PG | See all certifications »

Parents Guide:





Release Date:

14 March 2008 (USA)  »

Also Known As:

H2o  »

Box Office


AUD 10,000,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs


Aspect Ratio:

1.78 : 1
See  »

Did You Know?


The theme song at the beginning of each episode is sang by a different singer each season. Season 1 was Ellie Henderson, season 2 was Kate Alexa, and season 3 was Indiana Evans who also portrayed Isabella Hartley. See more »


In the episode _"H2O: Just Add Water" Lovesick (2006)_ the trainer tells Cleo that Ronny was rescued from the wild, but in the episode "H2O: Just Add Water" In Hot Water (2007) it is stated that he was raised in captivity. See more »


Byron: Thanks for last night. You have the worlds best lips.
Emma Gilbert: [spits out drink] Lips! My lips? What's he talking about? Guys?
See more »


Remade as H2O Abenteuer Meerjungfrau (2015) See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

The Low Down On H2o just Add Water
26 January 2007 | by (Australia) – See all my reviews

Hey, i am a 13 year old girl and i absolutely love h2o just add water. Its basically about 3 girls named Cleo,Rikki and Emma. When Cleo gets stuck on a boat, Rikki helps her. Gets the boat going picks up Emma and (with the help of Rikki) Get stuck on a island. While trying to get a phone signal Cleo falls down into a cave and Rikki and Emma go down after her. After they walk for a little bit they find a little pool which if they swim underwater would lead them out to the sea. When they get into water they find that the water starts bubbling and sparkling. They don't think anything of it and swim to safety. The next day the girls realize that they have tuned into mermaids. They decide not to tell anyone because they were scared they would end up in a freak show. Later on they find that they have powers over water. Rikki can boil it, Cleo can morph it and Emma can freeze it. While tyring to keep this secret but not let in ruin the lives Cleo decides to go to a party where Zane (The bad boy) throws her in the water while everybody goes inside Lewis (Cleo friends who she likes and he likes her two)is shocked to see her turn into a mermaid he helps and finds out that Emma and Rikki are mermaids to. I have only seen 6 episodes. Because i missed it on channel ten so i am now watching it on the Disney channel. So if you are looking a the show and thinking is this a good show. i would say to you no... Its a GREAT show. And i would definitely recommend you watch it.

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Recent Posts
Where is the discussion for the Anime version that just popped up on net delectradoll
Why don't any of the girls tell their parents? danaenicole
How do they shave or wash their legs? mshacket
Why are the 3 main girls so mean? cautionersx
What about the Dolphins? Lennox7320
Ugh. Cleo's sister xThatsWhatSheSaidx
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