H2O: Just Add Water (2006)
An Australian teen fantasy series about three girls who secretly transform into mermaids — and must keep their extraordinary secret hidden from the world.
H2O: Just Add Water - Series Information
- Original Title: H2O: Just Add Water
- First Air Year: 2006
- Last Air Year: 2010
- Created by: Jonathan M. Shiff
- Type: TV Series
- Genres: Drama, Family, Sci-Fi, Fantasy
- Content Rating (US): TV-PG
- Episode Runtime: Average runtime per episode: 24 minutes
- Number of Seasons: 3
- Number of Episodes: 78
- Status: Ended
- Original Language: English
- Spoken Languages: English
- First Air Date: July 7, 2006 (United States - TV-PG), July 7, 2006 (Canada - G), July 7, 2006 (Germany - 16), July 7, 2006 (France - 16), July 7, 2006 (Australia - PG), July 7, 2006 (Brazil - L), July 7, 2006 (Mexico - AA), July 7, 2006 (Spain - TP)
- Networks: 10
- Alternative Titles: H2O: Just Add Water (AU), H2O: Просто добави вода (BG), H2O: Plötzlich Meerjungfrau (DE), H20 - Meninas Sereias (BR), H2O (US), H2O: As Sereias (PT), H2O: Sellőmesék (HU), H2O: lisää vain vesi (FI)
- Production Companies: Pacific Film and Television Commission, Jonathan M. Shiff Productions, Network Ten, ZDF
- Production Countries: Australia
H2O: Just Add Water - Plot
H2O: Just Add Water revolves around three teenage girls facing everyday teen problems with an added twist: they cope with the burden of growing a giant fin and transforming into mermaids whenever they come in contact with water.
H2O: Just Add Water - Trailer
Watch the official trailer and see the magic of Mako Island come to life:
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H2O: Just Add Water - Cast & Crew
Creator(s)
- Jonathan M. Shiff
Main Cast
- Phoebe Tonkin
- Cariba Heine
- Angus McLaren
- Burgess Abernethy
- Claire Holt
- Indiana Evans
- Luke Mitchell
- Taryn Marler
- Annabelle Stephenson
- Craig Horner
Writers
- Philip Dalkin
- Simon Butters
- Deb Cox
- Joanne Watson
- Anthony Morris
Executive Producers
- Jonathan M. Shiff
- Arne Lohmann
- Nicole Keeb
- Cherrie Bottger
- Kay Ben M'Rad
H2O: Just Add Water - FAQs
Where can you watch H2O: Just Add Water?
H2O: Just Add Water is available to stream on Netflix and Amazon Prime Video, including their ad-supported tiers. It can also be rented or purchased on Apple TV, Google Play Movies, and Fandango At Home, and watched for free with ads on Pluto TV, The Roku Channel, and Hoopla.
What happened to Emma in Season 3 of H2O?
Claire Holt's character Emma Gilbert does not appear in Season 3. The show explains her absence by stating she left on a world swimming tour with her family. She was replaced by Indiana Evans as Bella Hartley, a new mermaid who joins Cleo and Rikki.
Is H2O: Just Add Water based on a true story?
No, H2O: Just Add Water is entirely fictional. The series was created by Jonathan M. Shiff as an original fantasy drama for younger audiences. Its premise — teenagers transforming into mermaids — is rooted in mythology and imagination rather than any real-world events or people.
How many seasons and episodes does H2O have?
H2O: Just Add Water ran for three seasons with a total of 78 episodes. Each season consists of 26 episodes. The series aired from 2006 to 2010 and concluded with a complete story arc across all three seasons.
Who are the main cast members of H2O?
The principal cast includes Phoebe Tonkin as Cleo, Cariba Heine as Rikki, and Claire Holt as Emma — the original trio of mermaids. Indiana Evans joins in Season 3 as Bella. Supporting cast features Angus McLaren, Burgess Abernethy, Luke Mitchell, and Craig Horner.
Is H2O: Just Add Water worth watching?
H2O: Just Add Water is widely regarded as a charming and imaginative series for tweens and teens. Its blend of friendship, fantasy, and coming-of-age storylines has earned it a devoted global fanbase. The show also launched the careers of Claire Holt and Phoebe Tonkin, who went on to star in major productions.
What is H2O: Just Add Water about?
H2O: Just Add Water follows three Australian teenage girls who discover they transform into mermaids whenever they come into contact with water. Balancing school, friendships, and romance while keeping their secret hidden forms the heart of the series, which blends teen drama with supernatural fantasy.
Did H2O: Just Add Water inspire any spin-off series?
Yes. The success of H2O: Just Add Water led creator Jonathan M. Shiff to produce Mako: Island of Secrets (2013), a spiritual successor set in the same universe. An animated spin-off, H2O: Mermaid Adventures, also followed in 2015, expanding the franchise for younger audiences.
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