Second in the series about Isadora Moon's mermaid friend Emerald, the most rebellious princess under the sea! When Emerald and her stepsister, Delphina, sneak out of the palace in search of sea sprites they know it isn't strictly 'perfect mermaid princess' behavior. But they're about to learn that being a mermaid princess is about more than just following the rules - it's also about following your heart. Beautifully illustrated in two color, this is a charming and funny series of first chapter books. Perfect for readers who are looking for a mermaid story with a splash of wildness and wonder.