Chellie loves the big green turtles in their secret pool on the island where she lives. Every day, when the tide is right, she goes to be with her turtle family, and when she learns their scientific name, Chelonia, she decides to call herself Chelonia Green. One day she is devastated to find Caretta, the only loggerhead turtle in the pool, choked to death on discarded fishing line. Chellie decides to take action and begins cleaning up all the flotsam and jetsam along the island’s beaches; she even begins a campaign to persuade fishermen not to throw their garbage into the sea. Her efforts help bring together her island community, and produce some surprising results!