He's quick. He's silent. He has five rows of deadly teeth. Chomp! Meet
the shark--the fish who ruled the deep before dinosaurs roamed the
Earth! This fish has soft cartilage so he can glide, twist, and turn
before his prey can say "gulp!" He can smell a single drop of blood in
25 million drops of ocean. He can feel electricity given off by his
prey. He will lose and replace more than 10,000 teeth in his lifetime.
Cool photos bring kids into the shark's world. Fun facts go deep into
the shark's scary science.