Pocket Eyewitness SharksBy: DK Series: Pocket Eyewitness Dive into the world of the shark, one of the ocean's most awesome predators, in this mini encyclopedia of some of the world's most magnificent marine creatures. Pocket Eyewitness Sharks gives you fast facts at your fingertips and includes pictures to make learning about these extraordinary creatures even more fun. Did you know that the gentle whale shark has more than 300 rows of tiny teeth? Or that some hammerheads