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United, the Mermaids, humans, and sea monsters figure our how to open the final lock on the well of power, but something goes wrong!
First Air Date : May 20, 2016
Last Air date : Sep 22, 2018
Episode : 35 Episode
Season : 4 Season
Runtime: 5:10 minutes
Studio: YouTube
Country: United States of America
Cast:
Crew:
