Pool Party

Cleo Asking For Help

Air Date:
14 July 2006
Directed by:
Colin Budds
Written by:
Deb Cox
Preceded By:
Followed By:

Pool Party is the second episode in Season 1 of H2O: Just Add Water.


Annoying Miss Popularity, Miriam, is having a pool party and the girls want to go. But being around water is risky, especially when Zane tosses Cleo into the pool. Lewis is the only one around to help so he finds out their secret.


Miriam, is having a pool party that the girls don’t want to miss. But it is a risky activity for three mermaids: their secret could be out. Spurned by Lewis, Rikki discovers her mermaid power is to boil water at will! For a hot-head like Rikki, this is dangerous. Meanwhile, Cleo’s close friend Lewis is getting closer to finding out about the girls; almost busting Emma and Rikki, as mermaids. At the pool party, Cleo’s plan not to go swimming goes out the window as Zane and his mates toss her into the pool. But luckily the guys walk away before she turns into a mermaid. The only thing is – she needs someone who’s not a mermaid to get her out – Lewis. Emma uses her power to freeze the lock on Miriam's door, locking the rest of the party guests inside.

Lewis is extremely shocked at first, but despite that he helps Cleo get out of the pool and promises to keep their secret. Once out of the pool, Rikki finally gets to use her power. Rikki uses it to evaporate all the water on Cleo, making Cleo return to her human form. On their way out of the party, Rikki uses her power to evaporate all of the water in the pool.


  • First appearances of Byron, Miriam, Lisa Gilbert, Neil Gilbert and Tiffany.
  • First party in the series.
  • A recurring gag in this episode are the girls toppling over when they transform into mermaids.
  • Emma freezes something without a large quantity of water on it she freezes the screen door when it has only been touched by a few wet hands. 
  • Rikki discovers her power over water.
  • Lewis discovers the girls are mermaids in this episode.


  • Emma having a bath is similar to when Cleo takes a bath in the previous episode.
  • The beach sunset scene is similar to one in the previous episode.

Goofs and Errors

  • Cleo doesn't turn into blue bubbles in any of her transformations in this episode.
  • Cleo's wet suit does not disappear as she turns into her mermaid form.
  • It was more than ten seconds when Cleo changes into a mermaid.
  • The camera is wobbling slightly when Cleo falls over.


  • International Air dates:
    • Denmark: February 2, 2008 on Jetix
    • Poland: September 8, 2007 on Jetix
  • This episode aired in the United States on March 14, 2008 along with "Metamorphosis" as a TV Movie or a Series Premiere on Nickelodeon.


Lewis: Cleo, are you going to Miriam's party?
Cleo: Of course I'm going.
Miriam: And girls, don't forget to bring your best bikinis - it's a pool party.
Lewis: Right, err, well, seeing as you're going...
Cleo: I've changed my mind. I'm not going.

Miriam: Sick people make me feel... well, sick.

Rikki: I never liked pool parties anyway!

Rikki: You like her (Cleo), don't you?
Lewis: In a friendship kind of way.

Lewis: Well, I might just join you all for a swim then.
Rikki: We're naked Lewis.
Lewis: Just a...quick dip then.
Emma: Goodbye, Lewis.
Lewis: The offer was there.

Rikki: You like Byron, don't you?
Emma: No way.
Rikki: Well, you sound like an ad for a breakfast cereal.

Cleo: This is a catastrophe of the highest order! Moisturizer is mainly water.
Rikki: (not paying attention) If dolphins can swim for miles, so can we.
Cleo: We can't moisturize EVER again!
Rikki: We could swim all the way to Fiji, could you imagine that?
Cleo: Our skin will be dry and wrinkly! We'll be Geriatrics by the time we're 21!

Cleo: Lewis, What do you think of Rikki?
Lewis: You know those stonefish that kind of look like a rock, yet can shoot out enough poison to kill entire football team in half a second? She kind of reminds me one of those.

Byron: Parties aren't really my thing. See ya guys.

Lewis: What the? (hell) Ow! It's hot!




H2O - just add water S1 E2 - Pool Party (full episode)

H2O - just add water S1 E2 - Pool Party (full episode)