The Penguin's Secret is about a cruise to Antarctica and penguin poop. You must read the book to find out what the secret is. All children love to hear about the silly side of poop. This book is hilarious to children ages 6 to 86. You will also learn about Antarctica, the icy continent, life aboard a cruise ship, penguins in the wild, riding a zodiac to see penguins and walk among them, and of course, the secret of the penguins. Teachers can use this book to introduce a unit on Antarctica and penguins in the wild.