Boo!: A Fishy Mystery is a glorious underwater adventure from the creator of the award-winning One Fox: A Counting Book Thriller, featuring a host of sea creatures from an orange crab to a green turtle, a yellow eel and even a purple puffer fish. It all begins with one tiny pink fish who sets off a chain reaction of chaos beneath the waves until suddenly – SNAP! – she finds herself all alone in the ocean. Where has everyone gone, and how can such a tiny creature rescue her friends?