S1E1: The Secret of Mako Island
H2O: Mermaid Adventures
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H2O: Mermaid Adventures S1E1: The Secret of Mako Island

  • Aired: 2015-05-22
  • Runtime: 24 minutes
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Overview

When Cleo, Emma and Rikki get stranded overnight on Mako Island, a magic pool changes the girls' lives forever.

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