1, sharks eat people just by instinct. Most kinds of sharks are carnivores, while man is an animal, so when he is in front of hungry sharks, he will naturally be eaten.

2. If sharks often eat people, it means that the shark's living environment has been destroyed, or the shark's own experience makes him feel dangerous everywhere, so he will eat people and attack humans.

Eating: Most sharks feed on marine animals such as fish. Sharks feed on injured marine mammals, fish and carrion, and destroy weaker members of animals. Sharks also eat garbage and other wastes left by ships. In addition, some sharks prey on various marine mammals, fish, turtles and crabs. Some sharks can go without eating for months, and the great white shark is one of them. It is reported that great white sharks only eat once every month or two.