Depends, they could lose teeth, and gain some.
It is a vertebrate. They have backbones.
They usually replace the teeth instead of losing them. But usually the teeth are replaced every two weeks. A lemon shark replaces its teeth every 8-10 days. Young great white sharks replace there teeth every 100 days and old great white sharks replace their teeth every 230 days. The cookiecutter shark sheds the whole lower jaw at once.
12,000,345 teeth
whale sharks have 3000 little teeth but they do not use many due to their special ways of feeding
The great white sharks actually have that many teeth and they have three rows of them. This applies to all sharks that they have many rows of teeth or just many teeth.
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Blue sharks do have teeth. Since they are carnivore's and prey on fish and other sea animals they have many teeth used to capture these hard to catch prey. Like other sharks the blue shark has many rows of teeth that fall out as they get worn down, only to be replaced by a new set of teeth.
It lives in a little part of the sea called bikini bottom.
how sharp is the hammerhaed sharks teeth