A sweeping, slippery ode to a mysterious creature that has baffled scientists and philosophers for centuries—the eel.

You’d think a book about eels would tell you everything you need to know about eels: where they’re born, how they grow, where they live, where they die. But the truth is far stranger: the more we think we know about eels, the more the mysterious creature wriggles away, leaving even experts scratching their heads.

★ “A wriggling, warmhearted meditation on curiosity itself—and how much wonder lives inside a good unanswered question.” —Kirkus Reviews, starred review

★ “Awe-inspiring… this astounding book celebrates one vast, wondrous ‘crack in our wall of knowledge’—and delivers the delicious frisson that some riddles are worth savoring.” —Publishers Weekly, starred review

★ “A springboard to a big and stimulating idea.…that all we do know and have learned about our ‘vast, wondrous’ world can blind us to how very much remains for us to discover.” —Booklist, starred review

★ “Mind-bending” —The Horn Book, starred review

★ “A delight to read and think about” —School Library Journal, starred review

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