From the publisher:

The triple Caldecott winner David Wiesner brings his rich visual imagination and trademark artistry to the graphic novel format in a unique coming-of-age tale that begins underwater. A young mermaid, called Fish Girl, in a boardwalk aquarium has a chance encounter with an ordinary girl. Their growing friendship inspires Fish Girl's longing for freedom, independence, and a life beyond the aquarium tank. Sparkling with humor and brilliantly visualized, Fish Girl's story will resonate with every young person facing the challenges and rewards of growing up.