This intrigued scientists considering the size of the sharks brain. The Great Whites brain is about one half the size of a dogs. Over seventy percent of the brain is used for tracking prey. The other thirty percent is used for body functions. Studies show that the sharks main purpose is to eat.
People think that the sharks main purpose is to kill.
This is incorrect, sharks only eat when they are hungry. Impulses from the brain are sent to the jaws and the stomach telling the shark that it is time to hunt for food. We are mostly muscle where the pinniped body has a great deal of fat. It is theorized that the shark somehow senses this and abandons us as a potential meal because our bodies are not as energy-rich as the pinnipeds. The Great White shark has remained unchanged for 250 million years.