A great white shark may grow and use 20,000+ teeth in its lifetime. Also, it has 5 rows of teeth at any given time & will never run out of teeth because if one is lost, another spins forward from a coil-like tooth reservoir of backup teeth in the jaw

A great white shark may grow and use 20,000+ teeth in its lifetime. Also, it has 5 rows of teeth at any given time & will never run out of teeth because if one is lost, another spins forward from a coil-like tooth reservoir of backup teeth in the jaw