From huge whale sharks to tiny dwarf sharks, this book has everything you need to know about these mysterious sea creatures. Millions of years before the first dinosaurs walked the earth, the first sharks swam in the sea. Though they're often feared and misunderstood, most sharks aren't dangerous to humans—and they play an important part in their environment. With her signature combination of accessible, kid-friendly text and clear, well-labeled illustrations, Gail Gibbons introduces many of the more than three hundred types of sharks in the ocean, and gives concise information about their habitats and physical characteristics. Perfect for classroom collections or kids interested in marine life, Sharks is full of useful information on how humans have impacted shark populations, what to do if you see a shark while swimming, and fun shark facts.