when two girls and one mutant turtle boy, go on a mysteries island, they find them selves in a strange cave with an even stranger pool. when the 3 of them dive into the water, something magical happens ! all 3 of them swim right pack to the shore of the island. the next day, the all find out when the touch water, the grow, mermaid tails ! teenage mutant ninja turtles (2012) belongs to nickelodeon and Viacom national inc. all rights reserved. h20 : just add water belongs to Netflix. all rights reserved. the only thing I one is the story and the character Hannah Cast Leonardo : as cleo April as : Emma Hannah as : Rickey Donnie as (Leo brother) : Louis Mason as : zane Casey as : Charlotte Raph as : Bella and (Leo's brother)