When Caleb's harmonica falls out of his hands, a young boy from the sea rescues it, and the two became fast friends, a strong friendship in which each saves the other's life. By the author of The Canary Prince.
I wanted to use this for a library program but I really can't get past the "merboy" looking like a ghost. It's too bad, it had some good ideas for props and giveaways. I'm putting it on my maybe list.