From Caldecott's press release:
In this darkly humorous tale, a tiny fish knows it’s wrong to steal a hat. It fits him just right. But the big fish wants his hat back. Klassen’s controlled palette, opposing narratives and subtle cues compel readers to follow the fish and imagine the consequence.
“With minute changes in eyes and the slightest displacement of seagrass, Klassen’s masterful illustrations tell the story the narrator doesn’t know,” Caldecott Chair Sandra Imdieke said.