Brandon Cole/Getty Images Sharks, like this great white, can lose as many as 1,000 teeth per year. Sharks' teeth are constantly replaced throughout their lives. See a great white about to make a meal of a seal on the next page. Up Next What if there were no sharks? Can I survive a shark attack by gouging out its eyes? Can playing dead help save me from a shark attack? Can wearing magnets really repel sharks? Could ancient Aztecs have held the secret to fending off shark attacks?