There are many different ……35…… of sharks. These deep-water fish vary widely in size, shape, and ferocity. The sharks we hear about most often are those that are thought to be ……36…… to people. However, only a few kinds of sharks have ever attacked humans. …….37……. sharks are only interested in fish and will leave humans alone.
Many sharks can move through water with great …….38…….. . Some have large, razor sharp teeth hidden in their mouths. ……..39……. have much smaller teeth, and therefore can do less damage.
Sharks also vary a great deal in size. Some are only about three feet ……40……… Others, such as the whale shark, are much larger. A whale shark can reach a length of 60 feet.