Episode 1
The Secret of Mako Island
24m
Cleo, Emma and Rikki get stranded on Mako island and fall into a magic pool where their lives change forever.
Where to watch H2O: Mermaid Adventures
TV series
H2O: Mermaid Adventures
2015TV-Y72 seasons7.0 / 10
The lives of teenagers Emma, Cleo and Rikki are forever changed when a magical, forbidden island gives them the power to turn into mermaids.
Availability
Not streaming in United States
H2O: Mermaid Adventures premiered June 1, 2015. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
The lives of teenagers Emma, Cleo and Rikki are forever changed when a magical, forbidden island gives them the power to turn into mermaids.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Caught in the Net
24m
Emma competes in a contest, Cleo is stuck babysitting an intern and save an injured sea turtle.
Where to watch H2O: Mermaid Adventures
Episode 3
The White Mermaid
24m
The girls discover of an ancient mermaid statue and return it but treasure hunters have another idea.
Where to watch H2O: Mermaid Adventures
Episode 4
A Stormy Party
24m
A storm threatens to wash out a birthday party.
Where to watch H2O: Mermaid Adventures
Episode 5
Mako Island Hotel
24m
Zane's father plans a luxury resort on Mako Island.
Where to watch H2O: Mermaid Adventures
Episode 6
The Mysterious Seaweed
24m
Aggressive blue seaweed attacks Emma.
Where to watch H2O: Mermaid Adventures
Episode 7
It's in the Bag!
24m
Discarded plastic bags pose a threat to Teddy and his friends.
Where to watch H2O: Mermaid Adventures
Episode 8
Dolphin City Triangle
24m
Atmospheric disturbances result in disastrous consequences.
Where to watch H2O: Mermaid Adventures
Episode 9
Poseidon's Daughter
24m
Dolphin City is the location for a new movie.
Where to watch H2O: Mermaid Adventures
Episode 10
Dolphin City Mascot
24m
Danny gets captured by the Oceanic Center for observation.
Where to watch H2O: Mermaid Adventures
Episode 11
Bad Waves
24m
Lewis and the girls must find what's behind mysterious sound waves that are creating havoc.
Where to watch H2O: Mermaid Adventures
Episode 12
Jaw-ache!
24m
Berk breaks a tooth and wanders near the beach in pain, causing a panic.
Where to watch H2O: Mermaid Adventures
Episode 13
The Lost Ring
24mfinale
Rikki takes matters into her own hands by spying on her dad and his new girlfriend.
Where to watch H2O: Mermaid AdventuresEpisode information updated Sep 3, 2026
Available now in United States
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More about H2O: Mermaid Adventures
Cast
Katharina von KellerEmma (voice)
Patrick BachLewis (voice)Sonja SteinCleo (voice)
Robert MisslerBernie (voice)
Céline FontangesRikki (voice)
Production details
- Status
- Canceled
- Series type
- Scripted
- Episodes
- 26
- Original language
- German
- Original title
- H2O - Abenteuer Meerjungfrau
Networks & production
KiKaGermany- Les Cartooneurs AssociésFrance
- Fantasia AnimationChina
ZDF EnterprisesGermany
Themes
meerjungfraumermaid