"Uni and the little girl are taking a walk on the beach when they meet a mermaid! The little girl has all sorts of questions, but first, the mermaid needs some help! She wants to know all about the world above the water. Join Uni and the little girl as they help their new mermaid friend go on a grand adventure over hillsides, through magical forests, and even to the Real World!"--Provided by publisher.

"An Amy Krouse Rosenthal book ; pictures based on art by Brigette Barrager."