S1 · E1
Metamorphosis
Emma, Cleo and Rikki are just three ordinary teenage girls with ordinary teenage issues, until one magical day when they're transformed into mermaids.
25 min 07 Jul 2006 ★ 7.7
S1 · E2
Pool Party
As the girls try to keep their secret, socialite Miriam throws a pool party, and all they can do is try to stay dry.
25 min 14 Jul 2006
S1 · E4
Party Girls
A worried Emma cancels her annual sleepover party when she realises the risk of growing a tail in front of all her guests. She and Lewis travel back to Mako Island to try to find out how the girls were transformed into mermaids, and Emma finds a mysterious locket at the bottom of the Moon Pool, and thinks that it may be important. Meanwhile, Cleo gets a job at the marine park's dolphin tank, and Emma is furious with her for taking such risks around water. But Cleo's determination to lead a normal life without being scared of every drop of water she sees convinces Emma, who reschedules her sleepover. But there is trouble in store when Miriam, upset that she wasn't invited to Emma's party, gate crashes with Zane. At the party, Cleo gets water on herself, and has to hide in a closet, but when the other girls at the party open the door, she has already managed to zip herself up inside a sleeping bag. The girls, however, almost feel Cleo's tail, and she has to use her power to blow up the drinks as a distraction. Jealous Miriam then tries to steal Emma's locket, but Rikki stops her, and gives it back to Emma. Emma then gives it to Cleo, saying that a mermaid who can hide her tail in the middle of a party is more than capable of taking care of so important a locket. Also, Cleo is confused when she is approached at the marine park by a strange old woman who seems to know her secret.
25 min 28 Jul 2006 ★ 7.3
S1 · E5
Something Fishy
After discovering Cleo's Mermaid diary, Cleo's little sister is determined to save the Gold Coast from the 'evil Mermaids'.
25 min 04 Aug 2006
S1 · E6
Young Love
When Rikki drags Elliot from the surf Emma is worried about exposure, but Rikki is more worried about the crush he's developed.
26 min 11 Aug 2006
S1 · E7
Moon Spell
The strange old woman makes a reappearance at the marine park, and gives Cleo a mysterious warning not to look at the full moon. The other girls, however, are convinced the old woman is crazy, and ignore the warning, going ahead with Emma's planned surprise party for her father. At the party, however, Emma sees the reflection of the full moon in a bowl of punch, and then starts acting very strange, losing her inhibitions and being rude to the guests. Cleo, Rikki and Lewis try to keep her under control, but Emma ends up diving into the water, and turning into a mermaid. Worse still, when the others dry her off, her tail won't go away. How can they hide a mermaid in the middle of a party?
25 min 18 Aug 2006
S1 · E8
The Denman Affair
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.
25 min 25 Aug 2006
S1 · E9
Dangerous Waters
Rikki lands a seemingly harmless job collecting rare fish, but when she learns the man who hired her doesn't work for the marine park but is actually a dealer selling the fish for big profits, she decides to take on the task of setting things right.
25 min 01 Sep 2006 ★ 7.3
S1 · E10
The Camera Never Lies
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.
25 min 08 Sep 2006
S1 · E11
Sink or Swim
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.
25 min 15 Sep 2006
S1 · E12
The Siren Effect
The moon is full again, and Cleo feels its powerful effects, singing a siren song that has the boys all over town swooning.
25 min 22 Sep 2006
S1 · E13
Shipwrecked
Emma stumbles upon the mysterious Elder who knows more about what it means to be a Mermaid than the girls themselves.
25 min 29 Sep 2006
S1 · E14
Surprise!
Cleo is counting the days until her 16th birthday, fully aware that her big day can only be ruined by one thing - another of her father's embarrassing birthday parties. Zane embarks on a hunt for the "sea monster" he saw when he nearly drowned. He recruits Lewis to help but Lewis promises the girls he'll do everything he can to keep Zane well away from them and Mako Island.
25 min 06 Oct 2006
S1 · E15
The Big Chill
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.
25 min 13 Oct 2006 ★ 8.5
S1 · E16
Lovesick
Zane is relentlessly carrying on with his search for the mystery sea monster that saved his life, and tricks Cleo into giving him access to the marine park's library, so that he can learn more about sea creatures. Meanwhile, Cleo's friends and family become convinced that she has a secret boyfriend when she starts making odd phone calls and sneaking out of the house - unaware that she is only going to the marine park to care for a sick dolphin that seems to have a 'crush' on her.
26 min 20 Oct 2006 ★ 7.7
S1 · E17
Under the Weather
When a thunderstorm threatens to out the girls as mermaids, they pretend to be sick, but their lie attracts the attention of their parents.
25 min 27 Oct 2006
S1 · E18
Bad Moon Rising
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.
25 min 03 Nov 2006
S1 · E19
Hurricane Angela
Angela, who is Cleo and Kim's cousin, comes to town for a visit. She acts very grown up and sweet but when Cleo takes her to the amusement park with her sister, she disappears. Cleo and Kim search for her but all Cleo finds is a rather large bird in the bathtub at home. When Cleo tries to return the bird, she is caught and it is assumed she was stealing the bird instead.
25 min 10 Nov 2006
S1 · E20
Hook, Line and Sinker
Keen angler Lewis enters the annual fishing derby held by Cleo's dad, with a secret weapon; a specially designed lure, that is actually hopeless at catching fish. With Nate and the rest of the contestants laughing at him, Cleo feels sorry for Lewis, and tries to help him by deliberately putting a huge fish on the end of his line. But her plan backfires when it is revealed that the fish she chose was a deep-sea tuna, a fish impossible to catch with an ordinary fishing rod from the shore. Lewis is accused of cheating, and is kicked out of the competition, leaving Cleo feeling guilty. She and Emma later put the same fish on the other contestants' lines to prove Cleo's dad wrong, and Lewis is reinstated as the winner. Meanwhile, Rikki visits an art exhibition, and has an awkward meeting with Zane. But the pair are forced to talk to each other when they get trapped on a balcony.
25 min 17 Nov 2006 ★ 7.8
S1 · E21
Red Herring
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.
25 min 24 Nov 2006
S1 · E22
Fish Out of Water
Rikki and Zane begin secretly dating but Cleo and Emma catch them together at the movies. Cleo and Emma demand that she stop seeing Zane, forcing her to choose between him and them. Rikki refuses saying that true friends would never make her choose.
25 min 01 Dec 2006
S1 · E23
In Too Deep
Rikki and Zane see a locket in a shop window that looks just like the one Cleo found by Mako Island. Miss Chatham tells the girls how her and her friends, Julia and Gracie, were mermaids when they were 15. Miriam buys the locket to spite Rikki.
25 min 08 Dec 2006
S1 · E24
Love Potion
Chleo and Emma are having problems coming up with an idea for a dance. The three girls get a bit upset when they have to cover up with long sleeves so as to avoid becoming wet. They come up with the best place to have the dance, at the Juicenet cafe. Lewis thinks he has found a way to help the girls with a type of spray that makes the girls waterproof. However, their mermaid skin doesn't seem to agree with it. Meanwhile, Chleo and Emma have problems with their guys not asking them to the dance. Byron for Emma, and Lewis for Chleo. Rikki is cool about everything because she has Zane.
25 min 15 Dec 2006 ★ 7.9