Did you know that sharks can here pray 820 feet away (over 2 football fields) away? Or that sharks can smell blood one-half mile away? or that sharks like the color yellow because it is easy to see under water? These and other fascinating facts about sharks can be found in this book. Maintaining their high standards, National Geographic has produced another book that begs to be shared. Whether the reader shares facts like those above or the gorgeous photographs, the book is perfect for all those shark-lovers out there, and even those who don't particularly care for sharks will find the information interesting. The book would also be very useful in teaching students how to read graphs, diagrams, and maps, as well as the importance of good captions. Highly recommended.