Can shark teeth grow indefinitely

Shark teeth can grow indefinitely. This is because in essence, shark teeth evolved from shield scales, belonging to a kind of scales. That's why it can be regenerated many times. Sharks' teeth are easily damaged and shed due to lack of root fixation, so they will constantly grow new teeth to replace old or lost teeth. They keep changing their teeth to ensure their sharpness and firmness, thus ensuring their predation ability.

Knowledge development

Sharks don't have only one row of teeth in their mouths, but they have 3-6 rows of teeth. These teeth will not play a role at the same time when preying. Generally, only the outermost row of teeth plays a major role, while the rest of the teeth generally do not play a role, or only play a small auxiliary role. Once a tooth is damaged, the spare teeth will be replaced quickly. They usually change their teeth every 7-15 days, and they can change more than 20,000 teeth in their lifetime, which is very amazing.