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The Best Episodes of H2O: Just Add Water

Every episode of H2O: Just Add Water ranked from best to worst. Let's dive into the Best Episodes of H2O: Just Add Water!

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.

Genres:DramaFamilySci-Fi & Fantasy
Network:Network Ten

Top Episode Highlight

The best episode of "H2O: Just Add Water" is "Sea Change", rated 8.6/10 from 167 user votes. It was directed by N/A and written by N/A. "Sea Change" aired on 3/14/2008 and is rated 0.0 point(s) higher than the second highest rated, "Unfathomable".

  • Sea Change
    8.6/10 167 votes

    #1 - Sea Change

    Season 2 Episode 25 - Aired 2008-03-14

    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?

    Director: N/A

    Writer: N/A

  • Unfathomable
    8.6/10 197 votes

    #2 - Unfathomable

    Season 2 Episode 26 - Aired 2008-03-21

    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?

    Director: N/A

    Writer: N/A

  • A Twist in the Tail
    8.5/10 185 votes

    #3 - A Twist in the Tail

    Season 1 Episode 26 - Aired 2006-12-29

    Dr. Denman sets up a trap for the girls at Mako Island and Zane is forced to decide who he should be helping.

    Director: Jeffrey Walker

    Writer: N/A

  • Wrong Side of the Tracks
    8.4/10 166 votes

    #4 - Wrong Side of the Tracks

    Season 2 Episode 8 - Aired 2007-11-16

    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.

    Director: N/A

    Writer: N/A

  • In Over Our Heads
    8.4/10 185 votes

    #5 - In Over Our Heads

    Season 2 Episode 11 - Aired 2007-12-07

    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!

    Director: N/A

    Writer: N/A

  • The Gracie Code (1)
    8.4/10 153 votes

    #6 - The Gracie Code (1)

    Season 2 Episode 19 - Aired 2008-02-01

    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?

    Director: N/A

    Writer: N/A

  • Secrets & Lies
    8.3/10 121 votes

    #7 - Secrets & Lies

    Season 3 Episode 6 - Aired 2009-11-02

    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.

    Director: Jeffrey Walker

    Writer: N/A

  • Kidnapped
    8.3/10 120 votes

    #8 - Kidnapped

    Season 3 Episode 8 - Aired 2009-11-04

    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.

    Director: Jeffrey Walker

    Writer: N/A

  • The Dark Side
    8.3/10 117 votes

    #9 - The Dark Side

    Season 3 Episode 16 - Aired 2010-02-24

    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.

    Director: N/A

    Writer: N/A

  • Breakaway
    8.3/10 121 votes

    #10 - Breakaway

    Season 3 Episode 19 - Aired 2010-04-13

    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.

    Director: N/A

    Writer: N/A

  • Queen For A Day
    8.3/10 122 votes

    #11 - Queen For A Day

    Season 3 Episode 20 - Aired 2010-04-13

    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.

    Director: N/A

    Writer: Samantha Strauss

  • Bad Moon Rising
    8.2/10 177 votes

    #12 - Bad Moon Rising

    Season 1 Episode 18 - Aired 2006-11-03

    Zane's quest to find the 'sea monster' has led him to Mako Island. Rikki loses control of her powers as a result of the full moon and Zane finds her.

    Director: Jeffrey Walker

    Writer: N/A

  • Dr. Danger
    8.2/10 162 votes

    #13 - Dr. Danger

    Season 1 Episode 25 - Aired 2006-12-22

    It's time for Emma's family's annual vacation trip, but she can't go as the risks are too high. But all her excuses don't go very well with her family. Meanwhile, with the return of Dr. Denman, Zane is closer than ever to cracking the girl's secret.

    Director: Jeffrey Walker

    Writer: N/A

  • Moonstruck
    8.2/10 144 votes

    #14 - Moonstruck

    Season 2 Episode 17 - Aired 2008-01-18

    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?

    Director: N/A

    Writer: N/A

  • To Have & To Hold Back
    8.2/10 132 votes

    #15 - To Have & To Hold Back

    Season 3 Episode 13 - Aired 2010-01-21

    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.

    Director: Jeffrey Walker

    Writer: N/A

  • The Jewel Thief
    8.2/10 119 votes

    #16 - The Jewel Thief

    Season 3 Episode 21 - Aired 2010-04-14

    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.

    Director: N/A

    Writer: N/A

  • Mako Masters
    8.2/10 117 votes

    #17 - Mako Masters

    Season 3 Episode 22 - Aired 2010-04-14

    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.

    Director: N/A

    Writer: N/A

  • Three's Company
    8.1/10 142 votes

    #18 - Three's Company

    Season 2 Episode 24 - Aired 2008-03-07

    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.

    Director: N/A

    Writer: N/A

  • Big Ideas
    8.1/10 120 votes

    #19 - Big Ideas

    Season 3 Episode 5 - Aired 2009-10-30

    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

    Director: Jeffrey Walker

    Writer: N/A

  • Happy Families
    8.1/10 120 votes

    #20 - Happy Families

    Season 3 Episode 7 - Aired 2009-11-03

    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.

    Director: Jeffrey Walker

    Writer: N/A

  • Crime & Punishment
    8.1/10 135 votes

    #21 - Crime & Punishment

    Season 3 Episode 12 - Aired 2010-01-19

    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.

    Director: Jeffrey Walker

    Writer: N/A

  • A Magnetic Attraction
    8.1/10 121 votes

    #22 - A Magnetic Attraction

    Season 3 Episode 17 - Aired 2010-02-25

    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.

    Director: N/A

    Writer: N/A

  • Red Herring
    8.0/10 164 votes

    #23 - Red Herring

    Season 1 Episode 21 - Aired 2006-11-24

    Emma decides to change her look by colouring her hair red. Though nothing is that simple when you're half-mermaid. Zane asks Rikki out on a date.

    Director: Jeffrey Walker

    Writer: N/A

  • Fish Out Of Water
    8.0/10 169 votes

    #24 - Fish Out Of Water

    Season 1 Episode 22 - Aired 2006-12-01

    Emma and Cleo are concerned about Rikki going out with Zane. They force Rikki to decide to either be with Zane or with them.

    Director: Jeffrey Walker

    Writer: N/A

  • In Too Deep
    8.0/10 171 votes

    #25 - In Too Deep

    Season 1 Episode 23 - Aired 2006-12-08

    Rikki finds a locket that looks the same as Miss Chatham's in a Jewellery shop and she is determined to get it.

    Director: Jeffrey Walker

    Writer: N/A