H2O: Just Add Water (2006– )

TV Series  |  TV-PG  |   |  Drama, Family, Fantasy
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Ratings: 7.2/10 from 7,728 users  
Reviews: 27 user | 5 critic

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

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2010   2009   2008   2007   2006  
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?


In preproduction every girl that would be a mermaid during the season would get a molding done of her legs so they could make the mermaids tails for the seen's were they are mermaids but before they were able to swim with the tails on they had to go through a rigorous training process to get their bodies ready for the extra weight of the tails they also learned breath holding exercises to help them with holding their breath for long periods of time. 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 »


Emma Gilbert: You've got a lot of hair in your nose there, Harrison. That's a real forest.
See more »


Spin-off Mako Mermaids (2013) See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

H2O is water why add water to water!
24 May 2015 | by (United Kingdom) – See all my reviews

Okay now who's bright ideas was it to have 3 girls who turn into mermaids, I mean what's terrible plot! And the title is just downright idiotic h20 is water why add water to water!!!!!okay so maybe people like this because the its kind of funny but its one of them programmes that just doesn't compute with the sophisticated generation. How can this be the best show ever, people have reviewed it saying:"OMG its like the best show ever". Okay how about Breaking bad and Game of thrones, yeah your sensible aren't you you dimwits. Its a show where so girls become mermaids which is also illogical because Mermaids don't exist! Its not even the best kids programme, you have all these great cartoons that we grew up with and this live action crap is better?

2 of 4 people found this review helpful.  Was this review helpful to you?

Message Boards

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
What about the Dolphins? Lennox7320
Why are the 3 main girls so mean? cautionersx
Ugh. Cleo's sister xThatsWhatSheSaidx
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