Winner of the Kate Greenaway Medal Winner of the Caldecott Medal A New York Times Bestseller "There is character and narrative drive, suspense, menace, morality and a twist" The Sunday Times Jon Klassen for the smallest hands! A board book edition of the bestselling, multiple award-winning cautionary tale. A tiny fish proudly wears a blue hat. It fits him perfectly. Problem is, trouble could be following close behind... So it's a good thing that the enormous fish he took it from won't wake up. And even if he does, it's not as though he'll ever know what happened, right?