A shark's sense of smell is so acute that he can detect a single drop of blood in an Olympic-size swimming pool.
A shark has fins and a streamlined body that help it swim through water. It has gills, which take in oxygen directly out of the water. Because of its gills, sharks can stay underwater and not have to come to the surface to breathe
sharks live in the water they have gills that sucks the oxygen out of the water so it does not have to come up to the surface
Some sharks have what is called a Nictitating membrane that closes to protect eye when she shark bites its prey.
Sharks can generate up to 40,000 pounds per square inch of pressure in a single bite. But even great white sharks don’t bite that much harder than humans do.
Sharks move like airplanes! A shark creates forward movement by moving its tail, which acts like a propeller. As the shark moves forward, water moves over its fins as though they were wings, creating lift.
Great white sharks are picky eaters. Their diet requires lots of fat, and after one bite a great white shark can determine whether or not the meal will satisfy its nutritional needs. If it doesn’t, the shark will leave the rest and swim away.