Skip to content
Still from H2O: Just Add Water

TV show · drama, family

H2O: Just Add Water

2006–2010 · 3 seasons, 78 episodes · ended

Ray checks whether this show is for you and remembers where you stopped.

Start with Ray

Where to watch H2O: Just Add Water

See which services have this show in the US, with what audio and at what price.

Check where to watch

A free account is all it takes.I already have an account

Seasons and episodes H2O: Just Add Water

Season scores: TMDB, out of 10.

Season 1

2006 · 26 episodes · about 10h · 6.4/10

Still: Metamorphosis1. Metamorphosis24 min · 6.8/10

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.

Still: Pool Party2. Pool Party24 min · 6.0/10

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.

Still: Catch of the Day3. Catch of the Day24 min · 6.1/10

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.

Still: Party Girls4. Party Girls24 min · 5.8/10

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.

Still: Something Fishy5. Something Fishy24 min · 6.0/10

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.

Still: Young Love6. Young Love24 min · 5.8/10

Emma gets into trouble babysitting her little brother Elliot. She goes to Lewis for help when Elliot develops a crush on Rikki.

Still: Moon Spell7. Moon Spell24 min · 5.8/10

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.

Still: The Denman Affair8. The Denman Affair24 min · 5.8/10

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

Still: Dangerous Waters9. Dangerous Waters24 min · 5.5/10

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.

Still: The Camera Never Lies10. The Camera Never Lies24 min · 6.0/10

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.

Still: Sink or Swim11. Sink or Swim24 min · 5.9/10

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.

Still: The Siren Effect12. The Siren Effect24 min · 6.0/10

The full moon gives Cleo a power to put guys in a 'trance' and she suddenly gets a rush of admirers.

Still: Shipwrecked13. Shipwrecked24 min · 6.3/10

Emma invites Miss Chatham to stay at her place and Zane overhears Miss Chatham's concerns about 'her treasure'.

Still: Surprise!14. Surprise!24 min · 5.7/10

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.

Still: The Big Chill15. The Big Chill24 min · 7.2/10

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.

Still: Lovesick16. Lovesick24 min · 7.2/10

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.

Still: Under the Weather17. Under the Weather24 min · 7.2/10

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.

Still: Bad Moon Rising18. Bad Moon Rising24 min · 7.2/10

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.

Still: Hurricane Angela19. Hurricane Angela24 min · 5.0/10

Cleo and Kim are stuck with their cousin Angela who wants to go body boarding and causes a bird brained distraction when Cleo refuses.

Still: Hook, Line and Sinker20. Hook, Line and Sinker24 min · 6.4/10

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.

Still: Red Herring21. Red Herring24 min · 7.2/10

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.

Still: Fish Out Of Water22. Fish Out Of Water24 min · 6.4/10

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

Still: In Too Deep23. In Too Deep24 min · 7.2/10

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

Still: Love Potion #924. Love Potion #924 min · 7.2/10

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.

Still: Dr. Danger25. Dr. Danger24 min · 7.5/10

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.

Still: A Twist in the Tail26. A Twist in the Tail24 min · 7.2/10

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

Season summaries3 seasons, 26 episodes each

Season 1

2006 · 26 episodes · about 10h · TMDB 6.4

Season 2

2007 · 26 episodes · TMDB 6.6

Season 3

2009 · 26 episodes · TMDB 6.0

Episodes run about 24 min. Last episode: April 16, 2010

Is it worth watching? H2O: Just Add Water

Ray’s take

Is this show for you? Ray answers after a short chat about what you like, and remembers what you’ve seen.

Start with RayIt’s free.

Reception

On other sites

  • TMDB7.8/10728 votes

What is it about? 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: drama, family, sci-fi & fantasy. Themes: mermaid, supernatural, teen drama.

Cast and crew H2O: Just Add Water

All

Creators

Full cast43 cast members across all seasons

Cast:

Crew:

Shows like this H2O: Just Add Water

Details H2O: Just Add Water

Poster: H2O: Just Add Water
First episode
July 7, 2006
Last episode
April 16, 2010
Status
ended
Network
10
Country
Australia
Original language
English
Rating
TV-PG
Studios
Pacific Film and Television Commission, Jonathan M. Shiff Productions, Network Ten, ZDF

Frequently asked questions

How many seasons does H2O: Just Add Water have?

3 seasons, 78 episodes. The last episode aired April 16, 2010.

Who’s in H2O: Just Add Water?

Phoebe Tonkin, Claire Holt, Cariba Heine, Indiana Evans, Luke Mitchell, Angus McLaren, Burgess Abernethy, Paul Bishop, Kate Fitzpatrick, and Lara Cox. Created by Jonathan M. Shiff.

Sources: TMDB (title data, images). As of November 13, 2026. This product uses the TMDB API but is not endorsed or certified by TMDB. · Ta strona po polsku