Sharks typically have two or three rows of mature teeth, with each row containing approximately 20 to 30 teeth, although the amount of teeth a shark has depends on its species. A shark continually grows and replaces its teeth throughout its lifespan.
Sharks maintain several rows of growing teeth to replace any damaged and missing teeth in the two or three rows of mature teeth. The amount of teeth a shark has varies from one species to the next. For example, a whale shark has about 300 teeth in each row, whereas the great white shark has approximately 50 teeth total.