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H2O: Just Add Water Season 3

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Children & Family
TV-PG
3 Seasons
25m
Cleo and Emma meet new girl, Rikki, and find themselves stuck on Mako Island where they are transformed into mermaids. As well as growing tails, the girls find they have powers over water.

Season 3, 26 Episodes

S3 E1
The Awakening,
Cleo and Rikki face their final year of high school without Emma. They make a new friend in Bella and meet new boy Will – and encounter a strange new force on Mako Island that turns water against them.
TV-PG 25m 2025
S3 E2
Jungle Hunt,
Will seeks confirmation of his first experience on Mako Island. Bella volunteers to misdirect his search so he won't find the Moon Pool. The girls and Lewis discover the Moon Pool has changed.
TV-PG 25m 2025
S3 E3
Keep Your Enemies Close,
Cleo seeks a new job as an assistant dolphin trainer at the Marine Park. Rikki fires Nate's band from playing at the cafe until she and Bella reach an understanding.
TV-PG 26m 2025
S3 E4
Valentine's Day,
Cleo is forced to put Lewis' plans for romance on hold to restrain Kim's out-of-control love life. During this time, Don meets Samantha, a National Parks manager, and they start dating.
TV-PG 25m 2025
S3 E5
Big Ideas,
Zane concocts a dirt bike race to publicize the café. When Rikki discovers it's a scam, she and Bella decide to teach him and Nate a lesson. Cleo and Lewis make a major discovery about mixing the waters in the Moon Pool.
TV-PG 25m 2025
S3 E6
Secrets and Lies,
Bella attempts to start a relationship with Will until she sees he's apparently got another girl. Lewis tests the magic Moon Pool water at school and attracts the attention of their Science teacher.
TV-PG 25m 2025
S3 E7
Happy Families,
A problematic family beach picnic leads Don to end his relationship with Samantha, until Cleo encourages him to pursue it. Will's sister, Sophie, competes with Bella for a job at the café and sets her sights on Zane.
TV-PG 25m 2025
S3 E8
Kidnapped,
Rikki and Bella hide out at Cleo's to protect themselves from a full moon water attack. However, Bella is kidnapped by a water tentacle and taken to Mako Island. Lewis tries to keep Will away from the island so the girls can rescue her.
TV-PG 25m 2025
S3 E9
The Sorcerer's Apprentice,
Cleo defies Lewis' advice and experiments with the magic Moon Pool water. Using her powers, Rikki accidentally gets the water into Cleo's aquarium and all the girls have to rescue Cleo's fish Hector.
TV-PG 25m 2025
S3 E10
Revealed,
Bella's warned to back off from Will as he's on the trail of the girls' mermaid secrets. She gets too close to him and he finally discovers she's a mermaid.
TV-PG 25m 2025
S3 E11
Just a Girl at Heart,
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.
TV-PG 25m 2025
S3 E12
Crime and Punishment,
Rikki receives counterfeit money at the café 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.
TV-PG 25m 2025
S3 E13
To Have and to Hold Back,
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.
TV-PG 25m 2025
S3 E14
Mermaid Magic,
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.
TV-PG 25m 2025
S3 E15
Power Play,
Sophie uses Bella's idea for a fundraising concert and presents it as her own to Rikki to gain publicity for the café. Cleo's caught in the crossfire with Kim when Samantha moves in and puts her stamp on the Sertori home.
TV-PG 25m 2025
S3 E16
The Dark Side,
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.
TV-PG 25m 2025
S3 E17
A Magnetic Attraction,
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.
TV-PG 25m 2025
S3 E18
Into the Light,
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.
TV-PG 25m 2025
S3 E19
Breakaway,
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.
TV-PG 25m 2025
S3 E20
Queen for a Day,
Zane installs Sophie as head of staff at the café. Bella develops a sneezing allergy that also accidentally triggers her powers. Sophie seizes on the problem and looks to fire Bella and the band.
TV-PG 26m 2025
S3 E21
The Jewel Thief,
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.
TV-PG 26m 2025
S3 E22
Mako Masters,
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.
TV-PG 25m 2025
S3 E23
Beach Party,
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 café.
TV-PG 25m 2025
S3 E24
Too Close for Comfort,
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.
TV-PG 26m 2025
S3 E25
A Date With Destiny,
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.
TV-PG 26m 2025
S3 E26
Graduation,
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.
TV-PG 25m 2025

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Details

H2O: Just Add Water

Children & Family
TV-PG
3 Seasons
25m
As if being a teen weren't hard enough, the three gals in this Australian fantasy series must cope with the added burden of growing a giant fin and transforming into mermaids whenever they come into contact with water -- a fact they try to hide.

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