He's fast. He's quiet. He has 5 rows of dangerous teeth. Munch! Meet the shark-- the fish who ruled the deep before dinosaurs strolled the Earth! This fish has soft cartilage so he can slide, twist, as well as transform before his target can state "gulp!" He can smell a single decline of blood in 25 million decreases of sea. He can feel electrical energy offered off by his target. He will certainly lose as well as replace greater than 10,000 teeth in his life time. Trendy photos bring children right into the shark's world. Fun facts go deep right into the shark's frightening scientific research.