H2O: Just Add Water: Season 2
2007 · 26 episodes · ★ 6.6
What Season 2 of H2O: Just Add Water
The season opens with Rikki, Emma and Cleo, three fifteen-year-old girls living on the Australian coast. Their secret is that they turn into mermaids after spending ten seconds in the water, and only Lewis McCartney knows. They fear the full moon because of the strange effects it has on them. Zane returns and is still in love with Rikki, which strains things between them. Cleo worries about her dad, Don, after her mother leaves, and she loses her job with Mrs. Geddes. Charlotte's arrival upsets the balance, as she sets her sights on Lewis and stirs up jealousy. Meanwhile, Lewis investigates the effects of the moon and of Mako Island.
Season 2 Episodes
2x01 Stormy Weather
The girls catch a glimpse of the full moon and Lewis tries to keep them grounded. Drawn back to Mako Island during a rare planetary alignment, they experience unpredictable shifts in their abilities. Cleo navigates some difficult new family dynamics at home.
Directing: Jeffrey Walker
2x02 Control
The girls have problems with their new powers and Cleo finds that Lewis isn't helping. A new girl called Charlotte arrives and hits it off with a certain someone.
Directed by: Jeffrey Walker · Starring: Brittany Byrnes, Cleo Massey, Trent Sullivan
2x03 The One That Got Away
Rikki tries to avoid Zane when he comes back, but needs his help after an incident with a speedboat. Meanwhile, Charlotte continues to flirt with Lewis and Cleo worries for their secret.
Directed by: Jeffrey Walker · Starring: Burgess Abernethy
2x04 Fire and Ice
Trouble arises when Emma throws a party to prove she is as fun as Rikki. Meanwhile, Lewis is trying to prove his manhood and Cleo is receiving cards from a secret admirer.
Directing: Jeffrey Walker
2x05 Hocus Pocus
Trouble is in the air as the Setori's start to suffer and the JuiceNet is endangered by a new bar. But when Lewis finds a book of mermaid spells, the girls attempt to use a potion to fix everything. However, things aren't so easy when you have special powers.
2x06 Pressure Cooker
Cleo is worried when she sees her dad around with another woman. When she arrives at their house, she turns out to be Charlotte's mother! Meanwhile, Rikki and Emma attempt to save the Sertori's dinner with their powers.
2x07 In Hot Water
Everyone is shocked when Cleo is fired at the Ice Cream Stand, and even more so when Lewis takes her place! Rikki and Emma strike back at him but end up going too far
2x08 Wrong Side of the Tracks
Zane is curious by Rikki's reluctancy to reveal where she lives. So one day, he eventually convinces her to reveal her home: a trailer park with her grouchy father.
Starring: Burgess Abernethy
2x09 Riding for a Fall
Emma has to take Eliot for horse riding lessons and the competitive perfectionist tries to be better than the instructor. Meanwhile, Lewis double dates with Charlotte and Cleo.
Cast: Craig Horner
2x10 Missed the Boat
Cleo starts to struggle at school and gets help from the new tutor. But there are bigger problems when Charlotte starts to get closer to Mako Island with the help of Lewis.
Directing: Jeffrey Walker
2x11 In Over Our Heads
In need of cash, Rikki decides to go and searching for a lost statue with a huge reward. But she lies to Emma and Cleo, which causes danger when Rikki is knocked out!
Starring: Burgess Abernethy
2x12 Fish Fever
Emma gets poisioned after cutting her finger on some coral and she begins to turn into a white scaled monster! Meanwhile Charlotte thinks Cleo is trying to break her and Lewis apart.
2x13 Moonwalker
On the night of a full moon, Lewis, Emma, Rikki and Charlotte accompany Cleo's family for a camping trip at Mako. When all three girls are affected by the moon, they are unable to stop the curious Charlotte...
2x14 Get Off My Tail
Cleo decides to restart her friendship with Lewis and embrace her abilities, while Emma is shocked with the new supervisor who has big changes planned.
Cast: Craig Horner
2x15 Irresistable
Zane learns of the myth of Ambergris, a fragrance that can make mermaids fall for any man that wears it. When he buys it, Nate ends up wearing it and Emma, Cleo and Rikki all fall for him!
Cast: Burgess Abernethy, Craig Horner
2x16 Double Trouble
Lewis is puzzled when he dreams about Cleo being photographed by people. Later, he and Cleo take Eliot and Kim to the marine park. Meanwhile, Emma thinks something is up between Ash and Rikki.
Cast: Craig Horner
2x17 Moonstruck
It's full moon and the girls insist that they don't need Lewis to assit his help as all three girls are staying at Emma's and Ash is coming over. When Cleo and Rikki fall under the moon spell, can Lewis stop them from revealing their secret to Ash?
Cast: Craig Horner
2x18 The Heat Is On
For the first anniversary of the girls being mermaids, Cleo decides to throw a party. However, Emma and Rikki fall out following a fight between Ash and Zane and Cleo may have to celebrate alone.
Cast: Burgess Abernethy, Craig Horner
2x19 The Gracie Code (1)
Lewis is trying to find more information on the moon pool and stumbles across research on it by Max Hamilton from fifty years ago. Will Lewis reveal the girls secret to him in order to complete the puzzle?
Cast: Craig Horner, Ashleigh Brewer, Taryn Marler
2x20 The Gracie Code (2)
Charlotte demands answers to why Lewis is hanging out with the girls so much. She starts to believe an excuse from Cleo, but then a discovery from inside Max's research brings her to the secret! Meanwhile, Ash decides to help Emma with her "fear of water"
Cast: Craig Horner, Ashleigh Brewer, Taryn Marler
2x21 And Then There Were Four
Charlotte's stubborn nature and thirst for knowledge leads her to Max, who confirms her suspicions and leads her to the Moon Pool. Lewis meanwhile is having trouble trying to keep their relationship together.
2x22 Bubble Bubble, Toil and Trouble
The girls decide that they should accept Charlotte, and the four work together when they need to join the volleyball team to avoid failing Physical Education.
2x23 Reckless
Charlotte is determined to prove her love for Lewis and show she is better than the other three, and refuses their advice and takes matters into er own hands when Nate causes trouble for Lewis.
Cast: Craig Horner
2x24 Three's Company
More friction arises, this time over Lewis' birthday party. Charlotte takes control and drives Rikki away from the party. However, things go out of hand and it is up to her to save the day.
Cast: Burgess Abernethy, Craig Horner
2x25 Sea Change
Angry over the short friendship with the girls, Charlotte forces Lewis to choose between her and his friends. This results in Cleo to feel isolated and she runs away and gets lost. When he is informed, Lewis must make up his mind: Cleo or Charlotte?
2x26 Unfathomable Season Finale
A unusual and rare planetary alingment is set to cause the full moon to remove a mermaids powers if they enter the moon pool! Charlotte shows immunity and tries to reveal the girls secret before Lewis takes her to Mako Island. The girls follow and a battle erupts. But who will win?
Cast: Burgess Abernethy, Craig Horner
Season 2 Cast
Phoebe TonkinCleo Sertori26 episodes
Claire HoltEmma Gilbert26 episodes
Angus McLarenLewis McCartney26 episodes
Craig HornerAsh11 episodes
Burgess AbernethyZane Bennett7 episodes
Ashleigh BrewerGracie2 episodes
Taryn MarlerJulia2 episodes
Cleo MasseyKim SertoriEpisode 1All Seasons
Season 12006 · 26 eps · 
Season 32009 · 26 eps · Where to Watch Season 2 of H2O: Just Add Water
Frequently Asked Questions
How many episodes does Season 2 of H2O: Just Add Water have?
Season 2 of H2O: Just Add Water has 26 episodes.
When did Season 2 of H2O: Just Add Water premiere?
Premiered on September 28, 2007.
Where to Watch Season 2 of H2O: Just Add Water?
Available by subscription on Netflix and Netflix Standard with Ads (availability may vary by country).