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H2O: Just Add Water (TV Series 2006– ) Poster

(2006– )

Trivia

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The actresses put full cream milk in their eyes to help them keep their eyes open underwater.
Claire Holt (Emma Gilbert) left the show at the end of season two to film Messengers 2: The Scarecrow (2009), with the character's departure explained as traveling the world with her family.
Angus McLaren does not appear regularly in season three due to filming Packed to the Rafters (2008).
The girls' powers are as follows: Cleo can manipulate water, Emma can freeze water, and Rikki can boil water. In season 2, they gained weather control: Cleo can manipulate wind, Emma can draw moisture from the air to freeze, and Rikki can draw forth lightning which catches things on fire. Bella, the mermaid introduced in season 3, can crystallize and gelatinize water.
The role of Charlotte Watsford was nearly awarded to actress Gemma Forsyth before Brittany Byrnes was officially cast. Forsyth went on to portray Evie McLaren in the show's spin-off series Mako Mermaids (2013).
Cariba Heine hired a professional trainer to help improve her swimming while auditioning for the role of Rikki Chadwick.
The actress who portrays Kim Sertori's real name is Cleo Massey. She shares the same first name as her onscreen older sister.
Phoebe Tonkin (Cleo Sertori) and Claire Holt (Emma Gilbert) both went on to appear in The Vampire Diaries (2009) and its spin-off The Originals (2013).
Only two seasons with a total of 52 episodes were originally planned but, due to popular demand, a third and final season was filmed. Season one premiered in July 2006, followed by season two in September 2007. Season three first aired in the United Kingdom in October 2009, with the Australian premiere occurring in May 2010.
It first screened on Australia's Network Ten and runs in syndication on channels in over 120 countries and has a worldwide audience of more than 250 million. It was filmed on location at Sea World and other locations on the Gold Coast.
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.
Cariba Heine (Rikki Chadwick) and Jamie Timony (Nate) began a relationship during the filming of the series.
During preproduction, each girl that would be a mermaid during the season would get a molding done of her legs so they could make the mermaid tails for the scenes where they are in mermaid form. 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 underwater for long periods of time.
Every season starts with a full moon.
Nickelodeon advertised a 15 minute sneak peek two weeks before the show was aired.
Cariba Heine (Rikki Chadwick), Burgess Abernethy (Zane Bennett), and Isabel Durant (Ondina in Mako Mermaids (2013)) all appeared on Dance Academy (2010).
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Claire Holt (Emma Gilbert) auditioned for a part in The Secret Circle (2011) but didn't get it. Phoebe Tonkin (Cleo Sertori) landed the part of Faye Chamberlain on the show.
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Cariba Heine, Phoebe Tonkin, and Damien Garvey (Coach Norris in Mako Mermaids (2013)) all appeared in Bait (2012).
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This is one of the most successful children's Australian television series considering they got three seasons. Most of the others only get one or two.
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While clearing part of a jungle for filming season 3 they found an overturned truck and tried to get it out with a crane.
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Spoilers 

The trivia items below may give away important plot points.

The mermaids, Emma,Cleo,Rikki, wardrobe frequently followed a color scheme: Emma white/blue, Cleo pink/purple, and Rikki black/red.
Every season has a different enemy or "bad girl." Season 1 is Miriam Kent, season 2 is Charlotte Watsford, and season 3 is Sophie Benjamin.
Indiana Evans (Isabella Hartley) and Angus McLaren (Lewis McCartney) were dating in real life.
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.
Charlotte Watsford's wardrobe consisted of the color combination of all three mermaids: white, red, and purple. She also has all of their powers; Manipulating Water, Boiling water, and freezing water.
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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.
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See also

Goofs | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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