Question about a 90s tv show?!

I remember a show in the 90s and it was about a mermaid-like girl, and a boy who's family lived at sea!.!.!. I don't remember a lot of details!. I remember one episode she had to splash herself with water from a drinking fountain on the ship or whatever the boy lived on!.!.!. anyone remember this show!?Www@Enter-QA@Com

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