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.
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Netflix
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see all options Availability data: JustWatch
- Seasons
- 3
- Episodes aired
- 78
- Latest aired
- S03E25
- Total runtime
- 1d 7h
Timeline when each season aired
- Season 1 July 2006 – December 2006 26 episodes
- Season 2 September 2007 – March 2008 26 episodes
- the show was away for 1 year and 7 months
- Season 3 October 2009 – April 2010 26 episodes
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S03E01 The Awakening
October 26 · 24min find the promo
Show synopsis
Cleo and Rikki enter their final year of high school. They make friends with a new girl, Bella, and a new boy, Will. However, they encounter a new force on Mako Island that has the power to turn water against the girls.
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S03E02 Jungle Hunt
October 27 · 24min find the promo
Show synopsis
With Will finding out about Mako Island, Bella tries to misdirect his search so that he will not discover the Moon Pool. However, Lewis and the girls find out that the Moon Pool is different.
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S03E03 Keep Your Enemies Close
October 28 · 24min find the promo
Show synopsis
At the marine park, Cleo seeks a job as a dolphin trainer. Meanwhile, until she and Bella reach an understanding, Rikki fires Nate's band, preventing them from playing in the cafe.
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S03E04 Valentines Day
October 29 · 24min find the promo
Show synopsis
Cleo has to put off Lewis' romance plans in order to help Kim with her crazy love life. Meanwhile, Don meets up with a National Parks Manager, Samantha, and the two decide to date.
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S03E05 Big Ideas
October 30 · 24min find the promo
Show synopsis
To get more interest in the cafe, Zane develops a dirt bike race. However, Rikki finds out that it is a scam. She and Bella decide to team up to teach him a lesson. Meanwhile, Lewis and Cleo find out something interesting about mixing the waters in the Moon Pool
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S03E06 Secrets & Lies
November 2 · 24min find the promo
Show synopsis
Bella tries to get close to Will but when Bella goes to his place she sees him with another girl. Meanwhile Lewis tries to test the water from the moon pool but gets caught by his teacher.
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S03E07 Happy Families
November 3 · 24min find the promo
Show synopsis
Cleo's family and Sam go on a picnic to the beach, which leads to tension when Cleo refuses to go near the water. Kim abuses the fact that her father is happy in order to get lots of gifts. Will's sister Sophie competes with Bella to get the job Bella wanted at Rikki's Cafe.
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S03E08 Kidnapped
November 4 · 24min find the promo
Show synopsis
During a full moon, the girls stay at Cleo's and Bella is attacked by the water creature. At the same time, Will decides to return to the moon pool after making the connection between his previous encounter with the moon pool waterfall and the timing of the full moon.
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S03E09 The Sorcerer's Apprentice
November 5 · 24min find the promo
Show synopsis
Cleo starts to experiment on the moon pool water without Lewis' knowledge, but things start going wrong when Cleo's fish Hector gets trapped in the bubble of floating water. Meanwhile, Lewis has to play golf with Cleo's father.
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S03E10 Revealed
November 6 · 24min find the promo
Show synopsis
After Bella gives Will a shell-like fossil she found while swimming, Will becomes suspicious as the fossil is of a rare kind. Rikki realises how close Will is to finding out their mermaid secret and warns Bella to stay away from Will.
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S03E11 Just A Girl At Heart
January 18 · 24min find the promo
Show synopsis
Bella helps Will with his free-diving training but when she realises he's more interested in her as a mermaid than a girl, she's hurt. Rikki and Cleo have to improvise when the cafe's first corporate function is actually a children‟s party.
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S03E12 Crime & Punishment
January 19 · 24min find the promo
Show synopsis
Rikki receives counterfeit money at the cafe and is held captive by criminals on a boat. Bella and Cleo are forced to reveal the trio's secret to Will so they can rescue Rikki together.
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S03E13 To Have & To Hold Back
January 21 · 24min find the promo
Show synopsis
Kim attempts to derail Don and Samantha's wedding. Lewis receives an opportunity to study in America. Cleo realises she's got to let Lewis live his own life and let him go overseas.
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S03E14 Mermaid Magic
February 22 · 24min find the promo
Show synopsis
Will pushes himself too far when Zane challenges him to prove his skills as a free- diver. The girls discover a unique crystal in the rock from the Moon Pool.
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S03E15 Power Play
February 23 · 24min find the promo
Show synopsis
Sophie uses Bella's idea for a fundraising concert and presents it as her own to Rikki to gain publicity for the cafe. Cleo's caught in the crossfire with Kim when Samantha moves in and puts her stamp on the Sertori home.
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S03E16 The Dark Side
February 24 · 24min find the promo
Show synopsis
Rikki's frustrated by the water attacks and goes to Mako Island on a full moon to confront the strange force in the Moon Pool. With Cleo and Bella delayed, Will pursues her and discovers she's been affected by the experience.
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S03E17 A Magnetic Attraction
February 25 · 24min find the promo
Show synopsis
Cleo's introduced to Ryan, a young geophysicist who's working for Samantha. Rikki doesn't react well to Cleo consulting Ryan about the Mako rock and a fracture begins to appear in the trio.
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S03E18 Into The Light
April 12 · 24min find the promo
Show synopsis
Rikki fears Ryan's explorations on Mako Island will uncover their secrets but Cleo and Bella discount her concern. She almost goes too far trying to stop Ryan from discovering the crystals in the Moon Pool.
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S03E19 Breakaway
April 13 · 24min find the promo
Show synopsis
Will competes in the Free-Diving Championships but afterward chooses to break from the sport and shrug off Sophie's influence on his life. Rikki sees Sophie kissing Zane at the event and breaks off their relationship.
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S03E20 Queen For A Day
April 13 · 24min find the promo
Show synopsis
Zane installs Sophie as head of staff at the cafe. Bella develops a sneezing allergy that also accidentally triggers her powers. Sophie seizes on the problem and looks to fire Bella and the band.
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S03E21 The Jewel Thief
April 14 · 24min find the promo
Show synopsis
The girls discover the Mako crystals contain immense energy and need to mount a rescue mission when Zane jealously steals one in an effort to gain Rikki‟s attention.
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S03E22 Mako Masters
April 14 · 24min find the promo
Show synopsis
The girls sit their final school exams and have to avoid a water attack in public when the full moon rises early. They confront the water force in the Moon Pool and are given a message about Mako Island.
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S03E23 Beach Party
April 15 · 24min find the promo
Show synopsis
Bella's eager to ask Will to the end of year party until she sees him asking Rikki. A big misunderstanding occurs which prompts Will to express his true feelings for Bella. Sophie tries to get Zane to change the name of the cafe.
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S03E24 Too Close For Comfort
April 15 · 24min find the promo
Show synopsis
Don gets a second job at the Marine Park on the Pirate ship and outshines Cleo, threatening the future of her Dolphin show. Bella and Will find difficulty trying to connect with each others' interests.
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S03E25 A Date With Destiny
April 16 · 24min find the promo
Show synopsis
Cleo discovers a comet is causing fish to flee the waters around Mako Island. The girls find a way to restart the message in the Moon Pool and discover the comet will collide with earth. Sophie meets Ryan and with Zane's help they join forces to remove the crystals from the Moon Pool.
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S03E26 Graduation
April 16 · 24min find the promo
Show synopsis
Sophie and Ryan damage the Moon Pool in their efforts to obtain the rare crystals. The girls improvise and use their own magic to prevent the impact of the comet and a planet wide catastrophe. Rikki, Cleo and Bella graduate with a surprise.