H2O: Just Add Water

Three girls become mermaids after a mysterious island transforms them and gives them special powers.

Cast:Cariba Heine , Phoebe Tonkin , Angus McLaren , Burgess Abernethy , Claire Holt , Alan David Lee , Cleo Massey , Jamie Timony , Ariu Lang Sio , Indiana Evans , Luke Mitchell , Brittany Byrnes , Taryn Marler , Caroline Marie Kenison , Trent Sullivan , Jared Robinsen , Annabelle Stephenson , Penni Gray

1Season 1

S1.E1 ∙ Metamorphosis

Sun, Jul 6, 2008

Emma, Cleo and Rikki are just three ordinary teenage girls with ordinary teenage issues, until one magical day when they're transformed into mermaids.

2Season 1

S1.E2 ∙ Pool Party

Fri, Jul 14, 2006

As the girls try to keep their secret, socialite Miriam throws a pool party, and all they can do is try to stay dry.

3Season 1

S1.E3 ∙ Catch of the Day

Fri, Jul 21, 2006

For Cleo, there is only one thing worse than becoming a Mermaid: the possibility her father is illegally fishing.

4Season 1

S1.E4 ∙ Party Girls

Fri, Jul 28, 2006

Cleo convinces Emma to go ahead with her traditional slumber party, with some unexpected results.

5Season 1

S1.E5 ∙ Something Fishy

Fri, Aug 4, 2006

After discovering Cleo's Mermaid diary, Cleo's little sister is determined to save the Gold Coast from the 'evil Mermaids'.

6Season 1

S1.E6 ∙ Young Love

Fri, Aug 11, 2006

When Rikki drags Elliot from the surf Emma is worried about exposure, but Rikki is more worried about the crush he's developed.

7Season 1

S1.E7 ∙ Moon Spell

Fri, Aug 18, 2006

Cleo receives a mysterious warning: do not stare at the full moon, not even its reflection. Emma is more concerned about her father's surprise birthday party.

8Season 1

S1.E8 ∙ The Denman Affair

Fri, Aug 25, 2006

Lewis gets a job as lab assistant to the beautiful Dr Denman in an effort to find more answers for the girls, but they're not convinced he can keep their secret.

9Season 1

S1.E9 ∙ Dangerous Waters

Fri, Sep 1, 2006

When Cleo's pet fish passes away, Rikki tries to cheer her up.

10Season 1

S1.E10 ∙ The Camera Never Lies

Fri, Sep 8, 2006

Not convinced an interview with Emma's mum will win the short film competition, Rikki decides to get some award-winning shark footage. Zane recruits Lewis to re-enact a record windsurfing run.

11Season 1

S1.E11 ∙ Sink or Swim

Fri, Sep 15, 2006

Byron asks Emma to coach him for the school swimming carnival. Rikki vents her frustration at Lewis's apparent disinterest in the girls as anything other than specimens.

12Season 1

S1.E12 ∙ The Siren Effect

Fri, Sep 22, 2006

The moon is full again, and Cleo feels its powerful effects, singing a siren song that has the boys all over town swooning.

13Season 1

S1.E13 ∙ Shipwrecked

Fri, Sep 29, 2006

Emma stumbles upon the mysterious Elder who knows more about what it means to be a Mermaid than the girls themselves.

14Season 1

S1.E14 ∙ Surprise!

Fri, Oct 6, 2006

Why is Cleo so desperate to avoid celebrating her 16th birthday? Zane recruits Lewis in his hunt for the 'sea monster'.

15Season 1

S1.E15 ∙ The Big Chill

Fri, Oct 13, 2006

Emma loves her job at the café, at least until she's left in charge of new employee Rikki, who doesn't take kindly to her authoritarian ways.

16Season 1

S1.E16 ∙ Lovesick

Fri, Oct 20, 2006

Zane seeks assistance from Cleo in his hunt for the sea monster that saved him, which leads to her family believing that Zane is Cleo's boyfriend.

17Season 1

S1.E17 ∙ Under the Weather

Fri, Oct 27, 2006

When a thunderstorm threatens to out the girls as mermaids, they pretend to be sick, but their lie attracts the attention of their parents.

18Season 1

S1.E18 ∙ Bad Moon Rising

Fri, Nov 3, 2006

The full moon is back, and this time it's Rikki's turn to fall under its sway but she loses control of her powers and flees to Mako Island.

19Season 1

S1.E19 ∙ Hurricane Angela

Fri, Nov 10, 2006

Cleo's cousin Angela is a force to be reckoned with, and while Cleo's dad mistakes her for a model of maturity, she proves to be a reckless wild child.

20Season 1

S1.E20 ∙ Hook, Line and Sinker

Fri, Nov 17, 2006

Lewis enters a fishing contest, and Cleo uses her powers to help him win, but her plan backfires when Lewis is accused of cheating.

21Season 1

S1.E21 ∙ Red Herring

Fri, Nov 24, 2006

Emma dyes her hair red, with decidedly mixed results; Zane's quest for the sea monster leads him to Miss Chatham and her old homestead.

22Season 1

S1.E22 ∙ Fish Out of Water

Fri, Dec 1, 2006

Romance heats up between Rikki and Zane, and Cleo and Emma find out, making Cleo demand that Rikki choose between her mer-friends and her new boy.

23Season 1

S1.E23 ∙ In Too Deep

Fri, Dec 8, 2006

When Rikki spies a locket with an uncanny resemblance to Miss Chatham's in a jewelry shop, Zane doesn't understand her desperate desire to possess it.

24Season 1

S1.E24 ∙ Love Potion

Fri, Dec 15, 2006

Emma and Cleo hope that Byron and Lewis will ask them to the school dance, but Lewis is left to ponder the significance of science vs. magic.

25Season 1

S1.E25 ∙ Dr. Danger

Fri, Dec 22, 2006

Emma refuses to accompany her family on their annual vacation; Dr. Denman's return brings Zane even closer to learning the secret of his sea monster.

26Season 1

S1.E26 ∙ A Twist in the Tail

Fri, Dec 29, 2006

Their mermaid identities no longer a secret, Cleo, Emma and Rikki must evade a trap being laid by the devious Dr. Denman.

1Season 2

S2.E1 ∙ Stormy Weather

Fri, Sep 28, 2007

Under the full moon, the girls' powers are enhanced and wreak havoc on Lewis in his boat, and the next day the girls realize they still need Lewis.

2Season 2

S2.E2 ∙ Control

Fri, Sep 28, 2007

Emma uses her powers to help Elliot at soccer; Lewis decides to test the girls' increased powers; Cleo hates Lewis's smothering and dumps him.

3Season 2

S2.E3 ∙ The One That Got Away

Fri, Oct 5, 2007

Zane's back in town and still in love with Rikki, and works out she's still a mermaid and tries to win her back; Cleo becomes suspicious of Lewis.

4Season 2

S2.E4 ∙ Fire and Ice

Fri, Oct 5, 2007

In trying to compete with Rikki, Emma tries to rebel and throws a party; Nate uses Lewis to make a play for Cleo.

5Season 2

S2.E5 ∙ Hocus Pocus

Fri, Oct 26, 2007

Lewis and the girls make a potion supposed to allow the girls to grant wishes. Wilfred worries he will have to close the Juicenet Café, and Emma suggests they make a TV commercial.

6Season 2

S2.E6 ∙ Pressure Cooker

Fri, Nov 2, 2007

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.

7Season 2

S2.E7 ∙ In Hot Water

Fri, Nov 9, 2007

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

8Season 2

S2.E8 ∙ Wrong Side of the Tracks

Fri, Nov 16, 2007

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.

9Season 2

S2.E9 ∙ Riding for a Fall

Fri, Nov 23, 2007

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.

10Season 2

S2.E10 ∙ Missed the Boat

Fri, Nov 30, 2007

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.

11Season 2

S2.E11 ∙ In Over Our Heads

Fri, Dec 7, 2007

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.

12Season 2

S2.E12 ∙ Fish Fever

Fri, Dec 14, 2007

Emma gets poisoned 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.

13Season 2

S2.E13 ∙ Moonwalker

Fri, Dec 21, 2007

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.

14Season 2

S2.E14 ∙ Get Off My Tail

Fri, Dec 28, 2007

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.

15Season 2

S2.E15 ∙ Irresistible

Fri, Jan 4, 2008

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.

16Season 2

S2.E16 ∙ Double Trouble

Fri, Jan 11, 2008

Lewis keeps dreaming that Cleo is discovered to be a mermaid. Elliot has a crush on Kim and she agrees to go on a date with him to the marine park. Don makes Cleo chaperone. Emma is suspicious of Rikki and Ash's private conversations.

17Season 2

S2.E17 ∙ Moonstruck

Fri, Jan 18, 2008

The girls prepare for the full moon again and insist they don't need Lewis' help. Rikki and Cleo suggest Ash to be more bold with Emma. Following their advice, Ash decides to do a surprise visit which could uncover their secret.

18Season 2

S2.E18 ∙ The Heat Is On

Mon, Jan 28, 2008

Cleo plans a party at the moon pool to celebrate the one year anniversary of the girls becoming mermaids, but when Zane and Ash have an argument at the juice bar, Rikki and Emma take sides against each other and forget about the party.

19Season 2

S2.E19 ∙ The Gracie Code: Part 1

Fri, Feb 1, 2008

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?

20Season 2

S2.E20 ∙ The Gracie Code: Part 2

Fri, Feb 8, 2008

Charlotte wants answers as to why Lewis is spending so much time with Cleo and the girls.

21Season 2

S2.E21 ∙ And Then There Were Four

Fri, Feb 15, 2008

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.

22Season 2

S2.E22 ∙ Bubble, Bubble, Toil and Trouble

Fri, Feb 22, 2008

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.

23Season 2

S2.E23 ∙ Reckless

Fri, Feb 29, 2008

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 her own hands when Nate causes trouble for Lewis.

24Season 2

S2.E24 ∙ Three's Company

Fri, Mar 7, 2008

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.

25Season 2

S2.E25 ∙ Sea Change

Fri, Mar 14, 2008

Charlotte's short-lived friendship with the other girls is over and she demands that out of loyalty to her, Lewis have no further contact with Rikki, Emma and most of all, Cleo.

26Season 2

S2.E26 ∙ Unfathomable

Fri, Mar 21, 2008

Lewis find out that there is a way for a mermaid to lose her powers and attempts to lure Charlotte to the Moon Pool. The plan backfire and it looks like all the girls may lose their powers.

1Season 3

S3.E1 ∙ The Awakening

Mon, Oct 26, 2009

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.

2Season 3

S3.E2 ∙ Jungle Hunt

Tue, Oct 27, 2009

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.

3Season 3

S3.E3 ∙ Keep Your Enemies Close

Wed, Oct 28, 2009

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.

4Season 3

S3.E4 ∙ Valentine's Day

Thu, Oct 29, 2009

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.

5Season 3

S3.E5 ∙ Big Ideas

Fri, Oct 30, 2009

Zane has bought motorbikes to earn rent from clients, but also organizes a rugged range race, offering $1,000, confident to win himself. He actively recruits competitors, greedy for their $200 entry fees, including Will, who has to borrow the cash. Learning Will has experience from his parent's Andes posting, bad loser Zane enlists Nate to cheat roughly, but fails. Will's precise recollections about the aggressive moon pool tentacle help Lewis devise a test which shows the key is mixing water from the ocean itself and the waterfall, albeit apparently very weak except at full moon.

6Season 3

S3.E6 ∙ Secrets and Lies

Mon, Nov 2, 2009

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.

7Season 3

S3.E7 ∙ Happy Families

Tue, Nov 3, 2009

Cleo is placed in an awkward situation when Don takes the family to the beach to help his daughters bond with his new girlfriend, Samantha.

8Season 3

S3.E8 ∙ Kidnapped

Wed, Nov 4, 2009

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.

9Season 3

S3.E9 ∙ The Sorcerer's Apprentice

Thu, Nov 5, 2009

Cleo starts to experiment on the moon pool water but things start going wrong when Cleo's fish Hector gets trapped with a bubble of floating water. Cleo's father gets attention.

10Season 3

S3.E10 ∙ Revealed

Fri, Nov 6, 2009

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.

11Season 3

S3.E11 ∙ Just a Girl at Heart

Mon, Jan 18, 2010

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 improvise when the cafe's first corporate function is actually a children's party.

12Season 3

S3.E12 ∙ Crime and Punishment

Tue, Jan 19, 2010

It's Rikki's birthday. Sophie asks Will to make a delivery for the café and he's given fake money. Rikki goes to investigate and gets into trouble. Will, Cleo and Bella come to her rescue.

13Season 3

S3.E13 ∙ To Have and to Hold Back

Thu, Jan 21, 2010

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.

14Season 3

S3.E14 ∙ Mermaid Magic

Thu, Jan 28, 2010

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.

15Season 3

S3.E15 ∙ Power Play

Tue, Feb 23, 2010

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.

16Season 3

S3.E16 ∙ The Dark Side

Wed, Feb 24, 2010

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.

17Season 3

S3.E17 ∙ A Magnetic Attraction

Thu, Feb 25, 2010

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.

18Season 3

S3.E18 ∙ Into the Light

Mon, Apr 12, 2010

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.

19Season 3

S3.E19 ∙ Breakaway

Tue, Apr 13, 2010

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.

20Season 3

S3.E20 ∙ Queen for a Day

Tue, Apr 13, 2010

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.

21Season 3

S3.E21 ∙ The Jewel Thief

Wed, Apr 14, 2010

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.

22Season 3

S3.E22 ∙ Mako Masters

Wed, Apr 14, 2010

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.

23Season 3

S3.E23 ∙ Beach Party

Thu, Apr 15, 2010

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.

24Season 3

S3.E24 ∙ Too Close for Comfort

Thu, Apr 15, 2010

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.

25Season 3

S3.E25 ∙ A Date with Destiny

Fri, Apr 16, 2010

Cleo discovers a comet is causing fish to flee the waters around Mako Island.

26Season 3

S3.E26 ∙ Graduation

Fri, Apr 16, 2010

While the world celebrates the spectacle of the rare comet, Cleo, Rikki and Bella know it's destined to strike earth and set out to stop it.