Shark attacks can be deadly, but they are not common. Each year, sharks usually kill fewer than 10 people worldwide, and about 100 people(injure). You are more likely to be attacked in parts of the seatourists throw in food to bring in sharks. However, people are dangerous to sharks, too. 60 million sharks are killedfood and medicine every year. As a result, some kinds of sharks may die out completely.(protect) these wonderful animals, some countries have made programs to help them survive.