Publisher Annotation: For over 400 million years, sharks have been the ocean's top predator! They're vital to our ecosystem, but their importance is often overshadowed by our own fearâ€even though they hardly ever threaten humans. Dive in for an intimate look at the dynamic hammerhead, infamous great white, primordial megalodon, and the gentle nurse shark, the rare species that will let a scuba diver pet them! This book is filled to the gills with...