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.
Where to Watch H2O: Just Add Water
Where to stream every episode from all 3 seasons of H2O: Just Add Water. Filter these episodes by what's available to watch free or on your streaming services using the tabs above.
Season 1Netflix | Hulu | Rent or Buy
S01 E01Jul 5, 2006
Metamorphosis Jul 5, 2006 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.
S01 E02Jul 13, 2006
Pool Party Jul 13, 2006 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.
S01 E03Jul 20, 2006
Catch of the Day Jul 20, 2006 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.
S01 E04Jul 27, 2006
Party Girls Jul 27, 2006 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.
S01 E05Aug 3, 2006
Something Fishy Aug 3, 2006 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.
S01 E06Aug 10, 2006
Young Love Aug 10, 2006 Emma gets into trouble babysitting her little brother Elliot. She goes to Lewis for help when Elliot develops a crush on Rikki.
Season 2Netflix | Hulu | Rent or Buy
S02 E01Sep 27, 2007
Stormy Weather Sep 27, 2007 With Cleo's parents now divorced, Cleo is ordered by her dad to take more care of Kim, starting with taking her to a concert. But on the night, Cleo, Rikki and Emma all accidentally see the full moon, and take off to Mako Island, with Lewis in hot pursuit. Once there, the girls undergo another magical transformation in the Moon Pool, as a rare planetary alignment intensifies the power of the full moon – Emma's power is enhanced so that she can produce snow and frost, Rikki can conjure lightning, and Cleo can now control wind as well as water. After the moonstruck girls nearly harm Lewis, they realise that they must work to control their new powers, before anyone else gets hurt.
S02 E02Oct 4, 2007
Control Oct 4, 2007 The girls have problems with their new powers and Cleo finds that Lewis isn't helping. A new girl called Charlotte arrives and develops a crush on a certain charecter
S02 E03Oct 11, 2007
The One That Got Away Oct 11, 2007 Rikki tries to avoid Zane when he comes back, but needs his help after an incident with a speedboat. Meanwhile, Charlotte continues to flirt with Lewis and Cleo worries for their secret.
S02 E04Oct 18, 2007
Fire and Ice Oct 18, 2007 Trouble arises when Emma throws a party to prove she is as fun as Rikki. Meanwhile, Lewis is trying to prove his manhood and Cleo is recieving cards from a secret admirer
S02 E05Oct 25, 2007
Hocus Pocus Oct 25, 2007 Trouble is in the air as the Setori's start to suffer and the JuiceNet is endangered by a new bar. But when Lewis finds a book of mermaid spells, the girls attempt to use a potion to fix everything. However, things aren't so easy when you have special powers.
S02 E06Nov 1, 2007
Pressure Cooker Nov 1, 2007 Cleo is worried when she sees her dad around with another woman. When she arrives at their house, she turns out to be Charlotte's mother! Meanwhile, Rikki and Emma attempt to save the Sertori's dinner with their powers.