Sharks generally have rows of sharp teeth in their mouths. Although the shape of the teeth varies from shark to shark, overall, the teeth of sharks are very sharp, which provides convenience for them to hunt for food.
Compared with other animals, shark teeth have a unique feature, that is, they can change their teeth countless times in their lifetime. After their front teeth fall out, the back teeth will be filled quickly. That is to say, behind their row of teeth, there will be "spare teeth". The teeth in the front row are generally upright and the best developed. However, with the passage of time, the front teeth will also age, when the back teeth will immediately move forward, into the gums, and can immediately stand up, which is very incredible in human eyes.
As mentioned above, sharks will change their teeth countless times in their lives. Some species of sharks even have whole rows of teeth. This is impossible in most animals, and even in humans, who can only replace their teeth once. The reason for this phenomenon is largely due to the existence of many tooth germs in shark jaws. Therefore, the speed of differentiation and calcification of these tooth germs is also very fast, which can easily form new teeth. After one row of teeth falls out, the next row of teeth can quickly replace them, so that sharks have the same sharp teeth, which will not affect their hunting.
