The BEST episodes of H2O: Just Add Water
Every episode of H2O: Just Add Water ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of H2O: Just Add Water!
Season One: The lifes of three girls living on the Australian Gold Coast are changed forever. When Cleo, Emma and Rikki stumble upon a pool inside the dreaded Mako Island, a full moon transforms them and the next day they start turning into super powered mermaids! With the help of friend Lewis, the girls manage to control their powers and hide their secrets. But it becomes difficult with maddening full moons, nosey scientists and local bad boy Zane going on a quest to find them! Season Two: Following the incident with Dr Denman and the Lunar Eclipse, Emma, Cleo and Rikki want to go back to their normal lives. But when the full moon comes back, all three girls have a dramatic power change! Without Lewis, they could destroy themselves. But their friend is trying his best to help them, despite his relationship with geeky Charlotte. But Charlotte proves to be more of a threat when she learns about her grandmother being a mermaid and stumbles into the moon pool and becomes a mermaid herself!
#1 - Unfathomable
Season 2 - Episode 26 - Aired 3/21/2008
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?
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#3 - A Date With Destiny
Season 3 - Episode 25 - Aired 4/16/2010
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.
#4 - Crime & Punishment
Season 3 - Episode 12 - Aired 1/19/2010
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.
#6 - Kidnapped
Season 3 - Episode 8 - Aired 11/4/2009
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.
#7 - Queen for a Day
Season 3 - Episode 20 - Aired 4/13/2010
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.
#8 - Revealed
Season 3 - Episode 10 - Aired 11/6/2009
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.
#10 - A Twist in the Tail
Season 1 - Episode 26 - Aired 12/29/2006
Dr. Denman sets up a trap for the girls at Mako Island and Zane is forced to decide who he should be helping.
#11 - Secrets & Lies
Season 3 - Episode 6 - Aired 11/2/2009
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.
#12 - Moonstruck
Season 2 - Episode 17 - Aired 1/18/2008
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?
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#13 - Sea Change
Season 2 - Episode 25 - Aired 3/14/2008
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?
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#14 - Stormy Weather
Season 2 - Episode 1 - Aired 9/28/2007
With Cleo's parents now divorced, Cleo is ordered by her dad to take more care of Kim, starting with taking her to a concert. But on the night, Cleo, Rikki and Emma all accidentally see the full moon, and take off to Mako Island, with Lewis in hot pursuit. Once there, the girls undergo another magical transformation in the Moon Pool, as a rare planetary alignment intensifies the power of the full moon – Emma's power is enhanced so that she can produce snow and frost, Rikki can conjure lightning, and Cleo can now control wind as well as water. After the moonstruck girls nearly harm Lewis, they realise that they must work to control their new powers, before anyone else gets hurt.
#15 - Into the Light
Season 3 - Episode 18 - Aired 4/12/2010
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.
#16 - Breakaway
Season 3 - Episode 19 - Aired 4/13/2010
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.
#17 - Dr. Danger
Season 1 - Episode 25 - Aired 12/22/2006
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.
#19 - Just a Girl at Heart
Season 3 - Episode 11 - Aired 1/18/2010
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 have to improvise when the cafe's first corporate function is actually a children‟s party.
#21 - Too Close for Comfort
Season 3 - Episode 24 - Aired 4/15/2010
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.
#22 - Love Potion #9
Season 1 - Episode 24 - Aired 12/15/2006
With the school dance coming up, Emma and Cleo hope Byron and Lewis will ask them out. Meanwhile, Miss Chatham and Lewis are arguing about which is more important, magic and science.
#23 - Mako Masters
Season 3 - Episode 22 - Aired 4/14/2010
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.
#24 - The Sorcerer's Apprentice
Season 3 - Episode 9 - Aired 11/5/2009
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.
#25 - Red Herring
Season 1 - Episode 21 - Aired 11/24/2006
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.