Have you ever been in the presence of a humpback whale? You might have seen (or heard) the spout, then watched the roll of the whale's back and dorsal fin. If you were lucky, you saw the distinctive flukes lift as the whale dived. But, what were you not seeing? WHEN YOU SEE FLUKES follows a conversation between a mother and her son as he learns about "what it takes to make a whale." Colorful illustrations, lively text, hidden picture challenges, and layers of natural history make this a book that parents, teachers, and children will enjoy. By Katherine Hocker and Cheryl Cook.