Browse episode ratings trends for H2O: Mermaid Adventures. Simply click on the interactive rating graph to explore the best and worst of H2O: Mermaid Adventures's 26 episodes.
Best Episodes of H2O: Mermaid Adventures
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Worst Episodes of H2O: Mermaid Adventures
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H2O: Mermaid Adventures Episode Guide
The Secret of Mako Island
S1 Ep1
1st Jun 2015
Cleo, Emma and Rikki get stranded on Mako island and fall into a magic pool where their lives change forever.
Caught in the Net
S1 Ep2
2nd Jun 2015
Emma competes in a contest, Cleo is stuck babysitting an intern and save an injured sea turtle.
The White Mermaid
S1 Ep3
3rd Jun 2015
The girls discover of an ancient mermaid statue and return it but treasure hunters have another idea.
A Stormy Party
S1 Ep4
4th Jun 2015
A storm threatens to wash out a birthday party.
Mako Island Hotel
S1 Ep5
5th Jun 2015
Zane's father plans a luxury resort on Mako Island.
The Mysterious Seaweed
S1 Ep6
6th Jun 2015
Aggressive blue seaweed attacks Emma.
It's in the Bag!
S1 Ep7
7th Jun 2015
Discarded plastic bags pose a threat to Teddy and his friends.
Dolphin City Triangle
S1 Ep8
8th Jun 2015
Atmospheric disturbances result in disastrous consequences.
Poseidon's Daughter
S1 Ep9
9th Jun 2015
Dolphin City is the location for a new movie.
Dolphin City Mascot
S1 Ep10
10th Jun 2015
Danny gets captured by the Oceanic Center for observation.
Bad Waves
S1 Ep11
11th Jun 2015
Lewis and the girls must find what's behind mysterious sound waves that are creating havoc.
Jaw-ache!
S1 Ep12
12th Jun 2015
Berk breaks a tooth and wanders near the beach in pain, causing a panic.
The Lost Ring
S1 Ep13
13th Jun 2015
Rikki takes matters into her own hands by spying on her dad and his new girlfriend.
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The first episode of H2O: Mermaid Adventures aired on June 01, 2015.
The last episode of H2O: Mermaid Adventures aired on October 13, 2015.
