H2O: Just Add Water — Season 1
01 Metamorphosis
Jul 7, 200624m★ 6.8
Three very different teenage girls, Emma, Cleo and Rikki, facing everyday teenage problems. With a twist: they're mermaids; after discovering a magic place where they are given incredible powers over water that change their lives forever.
02 Pool Party
Jul 14, 200624m★ 6.0
Miriam is having a pool party and Cleo considers going despite the risks of being around water. Meanwhile, Emma contemplates her future as a swimmer and Rikki makes a new discovery.
03 Catch of the Day
Jul 21, 200624m★ 6.1
Rikki, Emma and Cleo discover that sea turtles are being captured by fishing nets. When Rikki and Emma attempt to rescue the turtles by cutting the nets, it causes the fisherman to think that there is a rogue shark roaming their ocean.
04 Party Girls
Jul 28, 200624m★ 5.8
Emma decides that she is not going to have her annual sleepover party due to what has happened to them. But Rikki and Cleo try to convince her otherwise. Meanwhile, Lewis conducts experiments on the girls.
05 Something Fishy
Aug 4, 200624m★ 6.0
Cleo's sister Kim finds her diary and thinks that Cleo and her friends are 'evil mermaids' and she plans to tell everyone. Meanwhile, Lewis goes to Mako Island to find out more about what happened to the girls.
06 Young Love
Aug 11, 200624m★ 5.8
Emma gets into trouble babysitting her little brother Elliot. She goes to Lewis for help when Elliot develops a crush on Rikki.
07 Moon Spell
Aug 18, 200624m★ 5.8
Miss Chatham gives Cleo a warning that she doesn't quite understand. Until Emma finds herself in a trance and unable to change back from a mermaid under a full moon.
08 The Denman Affair
Aug 25, 200624m★ 5.8
Lewis is offered a great job with a marine biologist, but the girls are concerned that his interest will cause him to reveal too much information
09 Dangerous Waters
Sep 1, 200624m★ 5.5
Rikki is offered a job to collect rare fish. At first it seems perfectly fine, until she finds out the person that hired her is selling the fish for large profits.
10 The Camera Never Lies
Sep 8, 200624m★ 6.0
Rikki enters a short film contest on the theme of 'Heroes' and decides to capture some nice underwater footage with her 'abilities'. Meanwhile, Emma is interviewing her mum and Zane and Lewis are planning to rennact Dr. Bennet's windsurfing record.
11 Sink or Swim
Sep 15, 200624m★ 5.9
Byron asks Emma for help with training the school's swimming team and Emma has some trouble deciding whether or not to help out in her current situation. Meanwhile, Lewis continues to experiment on the girls, which annoys Rikki.
12 The Siren Effect
Sep 22, 200624m★ 6.0
The full moon gives Cleo a power to put guys in a 'trance' and she suddenly gets a rush of admirers.
13 Shipwrecked
Sep 29, 200624m★ 6.3
Emma invites Miss Chatham to stay at her place and Zane overhears Miss Chatham's concerns about 'her treasure'.
14 Surprise!
Oct 6, 200624m★ 5.7
Cleo's 16th birthday is approaching and she thinks that her father is going to throw another embarrasing birthday party. Meanwhile, Zane tries to find the 'sea monster' that he saw when he almost drowned.
15 The Big Chill
Oct 13, 200624m★ 7.2
Emma is doing well at her new job at the JuiceNet cafe, but when she is left in charge, she has trouble managing her new employee, Rikki.
16 Lovesick
Oct 20, 200624m★ 7.2
Rumour has it that Cleo has a boyfriend and her friends and family are trying to find out who he is. Meanwhile, Zane continues his search for the 'sea monster' he saw.
17 Under the Weather
Oct 27, 200624m★ 7.2
The girls have to fake sick as a result of a thunderstorm, so their secret won't be discovered at school. But their 'sickness' attracts the attention of doctors.
18 Bad Moon Rising
Nov 3, 200624m★ 7.2
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.
19 Hurricane Angela
Nov 10, 200624m★ 5.0
Cleo and Kim are stuck with their cousin Angela who wants to go body boarding and causes a bird brained distraction when Cleo refuses.
20 Hook, Line and Sinker
Nov 17, 200624m★ 6.4
Lewis enters the annual fishing derby. When Cleo sees him struggling, she decides to help him out with disastorous consequnces. Meanwhile, Rikki and Zane are trapped on a hotel balcony.
21 Red Herring
Nov 24, 200624m★ 7.2
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.
22 Fish Out Of Water
Dec 1, 200624m★ 6.4
Emma and Cleo are concerned about Rikki going out with Zane. They force Rikki to decide to either be with Zane or with them.
23 In Too Deep
Dec 8, 200624m★ 7.2
Rikki finds a locket that looks the same as Miss Chatham's in a Jewellery shop and she is determined to get it.
24 Love Potion #9
Dec 15, 200624m★ 7.2
With the school dance coming up, Emma and Cleo hope Byron and Lewis will ask them out. Meanwhile, Miss Chatham and Lewis argue about which has more merit – magic or science.
25 Dr. Danger
Dec 22, 200624m★ 7.5
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.
26 A Twist in the Tail
Dec 29, 200624m★ 7.2
Dr Denman sets up a trap for the girls at Mako Island and Zane is forced to decide who he should be helping.