Public fear and ignorance of these magnificent animals has led to many species being hunted and killed in large numbers. They have almost disappeared in some parts of the world. Sharks one of evolution's most perfect creations. Many of them have not changed in millions of years. They have evolved into the perfect hunting machine.
Sharks are part of a family of fishes known as cartilage fishes.
They have no bones in their bodies, only cartilage, like the soft flexible tissue in the end of your nose. Rays are also a member of this group. In fact, rays are actually nothing more than flattened out sharks. They can be seen flying gracefully through the water as effortlessly as a bird flies through the air. Some rays are capable if inflicting painful stings with their tails.