Description
When three normal teenage girls stumble upon an ancient cave they undergo a transformation that will change their lives forever.
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- H2O: Mermaid Adventures Episode 26 Trapped
- H2O: Mermaid Adventures Episode 25 Imminent Danger
- H2O: Mermaid Adventures Episode 24 Underwater Takeover
- H2O: Mermaid Adventures Episode 23 The Creature from the Bay
- H2O: Mermaid Adventures Episode 22 Robot Duel
- H2O: Mermaid Adventures Episode 21 Three Days Underwater
- H2O: Mermaid Adventures Episode 20 The Return of the White Mermaid
- H2O: Mermaid Adventures Episode 19 Handle with Care
- H2O: Mermaid Adventures Episode 18 A Strange Phenomenon
- H2O: Mermaid Adventures Episode 17 Kidnapped!
- H2O: Mermaid Adventures Episode 16 Valentine's Day
- H2O: Mermaid Adventures Episode 15 Memory Lapse
- H2O: Mermaid Adventures Episode 14 Reported Missing
- H2O: Mermaid Adventures Episode 13 The Lost Ring
- H2O: Mermaid Adventures Episode 12 Jaws-ache!
- H2O: Mermaid Adventures Episode 11 Bad Waves
- H2O: Mermaid Adventures Episode 10 Dolphin City Mascot
- H2O: Mermaid Adventures Episode 9 Poseidon's Daughter
- H2O: Mermaid Adventures Episode 8 Dolphin City Triangle
- H2O: Mermaid Adventures Episode 7 It's in the Bag!
- H2O: Mermaid Adventures Episode 6 The Mysterious Seaweed
- H2O: Mermaid Adventures Episode 5 Mako Island Hotel
- H2O: Mermaid Adventures Episode 4 A Stormy Party
- H2O: Mermaid Adventures Episode 3 The White Mermaid
- H2O: Mermaid Adventures Episode 2 Caught in the Net
- H2O: Mermaid Adventures Episode 1 The Secret of Mako Island