H2O: Just Add Water

Graduation

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A Date with Destiny

National park scientist Ryan examines...
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National park scientist Ryan examines why the fish is moving, so as to wreck Don's catch. Ryan's question about the moon-cave crystals, which he realizes must stem from a comet, bring him in contact with Sophie, who points out the mermaids. Zane's café is about to go bust in a week. Realizing that would cost her job, Sophie comes up with a plan: harvest the precious stones for sale, and suggests they must come from Mako. They enlist Zane to finance the necessary equipment.
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Too Close for Comfort

Zane's warning not to neglect girls'...
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Zane's warning not to neglect girls' need to be the center of attention makes Will attempt to show an interest in her musical career, but that stirs trouble in Nate's band. Her lukewarm, even physically disastrous interest in his fossil collection is easier solved. Kim's nagging 'only we never go on holiday' drives dad Sertori to seek a part-time second job now trawler fishery is slow. His success as pirate captain Don however proves too tough competition for Clio's dolphin show within the marine park.
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Beach Party

It's the end of the school year and...
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It's the end of the school year and the student council organizes a beach party instead of the traditional formal dance. Sophie hopes it's time to make Zane accept Rikki broke up so he'll change the cafés name from Rikki's to Zane's. Will wants to go with Bella but after he practices asking her with Rikki, is mistakenly assumed to be her new boy-friend, so Belle asks Nate. Clio gets a telescope she assumes to be from Nate, not fiancé Lewis, but turns out to be from Ryan. Ultimately the truth gets known.
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Mako Masters

The next new moon is at exam time....
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The next new moon is at exam time. Rikki doesn't concentrate on study, wondering only about the cave and crystals, unlike Cleo, whose concentration breaks down however when she realizes the moon phase requires the mermaids to hand in their papers five minutes early. The tentacle makes it way to the mermaids earlier then expected, unstoppably, causing weird phenomena. Will has to overthrow the water-cooler, so the physics exam is canceled and rescheduled next day. Meanwhile in the cave, the tentacle reacts to the crystals by showing a comet's impact, perhaps its own arrival on earth. Unable to stop Zane from intruding Mako, Will had to follow him; their arrival seems to end the cave show.
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The Jewel Thief

Will made a jewel like Bell's from...
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Will made a jewel like Bell's from the blue crystal he found in the cave. Experiments show they attract, and when meeting cause a power-cut, to unsuspecting pa Sertori's despair during the football season finale. Ignoring Will's call for caution, the mermaids seek and find a third crystal, fro Cleo. Meanwhile Zane, who came confront Will about Rikki, finds and takes the second, which he tries to get Rikki back with, but she stands by the break-up, acting jealous about Sophie, escalating to Zane threatening to divulge the mermaids' secret.
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Queen for a Day

Will tries to keep friends with...
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Will tries to keep friends with everyone now Zane, who was dumped with Rikki, replaced her as manager by Sophie, with a free hand to restyle the café. Bella has a mysterious mermaid-cold, and her sneezing weird consequences that must remain hidden. So Nate coaches Cleo to step in until the allergy is determined.
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Breakaway

It's the big day for Will, Gold Coast...
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It's the big day for Will, Gold Coast free diving championship. 'Coach' Sophie and sponsor Zane expect him to be dead-eager, but Bella notices he cares less for winning then for loyalty to his sister. Finally he decides to do it and wins, then refuses to pursue the competitive circuit. Meanwhile Rikki had playful trouble with a dolphin, whose balls she promises Cleo to collect, and coldly dumps Zane.
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Into the Light

Park ranger Ryan discovers Cleo lied...
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Park ranger Ryan discovers Cleo lied about the magnetic rock and sets out to explore Mako. Zane refuses to join Rikki on a secret mission, actually spying on Ryan. Will is in time to stop her after destroying his magnetometer. Seeing how the others turn away from her, Will regretfully betrays to them their tentacle experience, which only adds to her bitterness. Sam stupidly forbids Ryan to pursue his research with Park Service means.
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A Magnetic Attraction

The Sertori girls wouldn't welcome...
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The Sertori girls wouldn't welcome Sam's dinner guest and colleague, park ranger Ryan, until they see the handsome devil. As a natural scientist, he eagerly offers to help Clio with a 'school project', actually the gang's study of the moon cave rock, which they discovered to be strongly magnetic. Rikki is hostile to the whole idea and retreats into the cave, feeling best there. Will reluctantly breaks his word to her by telling the other mermaids about Rikki's apparent control over the tentacle, which she now refuses to presume hostile.
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The Dark Side

It's the next full moon, so the gang...
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It's the next full moon, so the gang is to hold a slumber-party in the café. Zane is jealous of Will's invitation, so he invites his own rowdy mates. Kim also turns up, and as she lacks permission, pa Don, who once again is made to believe Clio just as mischievous. Ricki swims alone to the moon cave at tentacle time. Only Will arrives in time to witness the confrontation, but it turns only on him, yet she tells the others Wil saved her and swears him to secrecy.
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Power Play

Laurie's Dolphin Rescue needs funds,...
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Laurie's Dolphin Rescue needs funds, so Will and Bella think of a rock benefit. Sophie snaps up the idea for Zane's café, with her in charge. Bella seems petty complaining about 'her idea being stolen' and refuses to play songs from the official list, which gets her band banned. Sophie messes up everything. At the Sertori home, Kim turns her sabotage efforts against Sam to the bathroom and manages to shift the blame on Cleo.
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Mermaid Magic

Zane resents Will having become part...
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Zane resents Will having become part of the team but fails to make the girls doubt his reliability. Hearing Will needs a sponsor for his competitive diving without oxygen, Zane asks a demonstration claiming the café is interested. In fact he hires Cameron and Nate so he can cheat be diving 40 meter himself and receiving oxygen. Will decides to go for 60, fair, but ends up unconscious. Ricki arrives just in time as mermaid, finds out the truth and gets him a generous contract. Meanwhile, the Moonpool study shift from the controlled tentacle to the rock which swallowed Will's diving lamp. It turns out to contain a blue crystal, identical to the one Bella found in the Irish sea when she became a mermaid.
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To Have and to Hold Back

Pa Sertori finally announces his...
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Pa Sertori finally announces his wedding to Samantha 'Sam' Roberts. Cleo is completely out of the mood when Kim betrays that Lewis, the best man, has, unexpectedly, won an overseas three years scholarship, which he must confirm and leave for the day after the café-beach ceremony. Kim practices more sabotage. Everything works out in the end, on Mako.
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Crime and Punishment

The café staff is flat out, so Sophie...
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The café staff is flat out, so Sophie commandeers will to help out as delivery boy. He notices strange things and a fake bill as his tip. When Rikki delivers to the same men, actually counterfeiters Steve and Chris, on their boat, she sees a bag full of fake bills and is kidnapped. Will exchanges his information with Clio and Bella for the truth about the Mako mermaids, then helps them free Rikki, so they can celebrate her birthday with Lewis and Zane in the moon cave.
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Just a Girl at Heart

Bella thinks Sophie is mean because...
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Bella thinks Sophie is mean because she coaches Will ruthlessly demanding, but that's only because she found a corporate sponsor, Don King. Will lets her act as 'guest coach', but to demonstrate her idea of facing water as your friend she dives with him when Sophie arrives with Don, so Will has to pretend he's 'too tired' to prevent her being found out as mermaid. Zane launches the café in hosting corporate functions. He leaves Ricki in charge of the first booking, but it turns out the 'junior talent agency' consists of children who want junk food and a clown. When Will calls Bella's mermaid-being most fascinating, she keeps him at arms-length fearing he's not really interested in her.
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Revealed

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The Sorcerer's Apprentice

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Kidnapped

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Happy Families

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Secret and Lies

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Big Ideas

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Valentine's Day

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Keep Your Enemies Close

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Jungle Hunt

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Finale

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Sea Change

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Three's Company

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Reckless

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Bubble, Bubble, Toil and Trouble

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Then There Were Four

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The Gracie Code: Part 2

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The Gracie Code: Part 1

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The Heat Is On

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Moonstruck

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Visions

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Irresistable

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Cleo vs. Charlotte

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Camping on Mako Island

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Monster

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Treasure Hunt

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Unfathomable

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Riding for a Fall

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Wrong Side of the Tracks

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In Hot Water

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Pressure Cooker

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Hocus Pocus

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Emma Rebel

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Double Trouble

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Fire and Ice

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A Twist in the Tail

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Dr. Danger

Love Potion #9

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In Too Deep

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Fish Out of Water

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Red Herring

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Hook, Line and Sinker

Lewis' excitement about testing his...
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Lewis' excitement about testing his new lure in the annual fishing derby is quelled by Cleo's refusal to renew their traditional partnership for fear of getting wet. When Lewis struggles, Cleo decides to use her mermaid powers help Lewis land the "big one" but when he is accussed of cheating, he is kicked out of the competition by Cleo's father and forbidden from seeing her again. Rikki and Zane encounter one another at a business seminar and get trapped on a balcony. The time alone together allows them to get to know one another better, perhaps a little too well when the rain starts falling.
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Hurricane Angela

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Bad Moon Rising

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Under the Weather

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Lovesick

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The Big Chill

When Emma is left in charge of the...
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When Emma is left in charge of the Juicenet caf?, Mirrium is determined to make things go wrong. When she turns of the cooling system in the cold room, Emma tries to fix it by freezing everything in the room, including Mirrium hiding inside!
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Surprise!

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Shipwrecked

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The Siren Effect

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Sink or Swim

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The Camera Never Lies

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Dangerous Waters

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The Denman Affair

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Moon Spell

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Young Love

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Something Fishy

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Party Girls

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Catch of the Day

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Pool Party

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