Did you know the stonefish is the most venomous fish species to swim in our oceans? Better not get too close--it has 13 dorsal fin spines that release deadly toxins when the fish gets into threatening situations. In Sharks & Underwater Predators, you'll learn about the dwarf lantern shark, which is so small it can fit in the palm of your hand; the whale shark, which grows up to 40 feet in length and is the largest known fish species in the oceans today; the great white shark, the oceans' top predator and capable of chewing up dolphins and seals with its 300 teeth; and much more.