AoiUmi_97
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Echoes of the Sea by AoiUmi_97
Fandoms: H2O: Just Add Water, Mako Mermaids, H2O: Mermaid Adventures (Cartoon)
13 May 2026
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Summary
In the quiet seaside town of Aoshima, Japan, three high schoolers cross paths and get stranded on the remote island of Tsukishima. There, they encounter a mysterious Moon Pool at the center of a dormant volcano. Under the full moon, waves of glowing light ripple through the water, awakening ancient ocean magic. After escaping through the pool beneath the full moon, they discover the next morning that they now share a life-changing secret - whenever they touch water, they transform into mermaids. Now they must stick together while navigating life with this new secret.