When Charleston resident Grant Martin found his first shark tooth on a Hilton Head Island beach when he was a kid, he thought ...

Six fossilized great white shark teeth have been found on Narragansett Town Beach in Rhode Island within a year. The Atlantic Shark Institute is encouraging the public to report any further ...

Even sharks’ famous tooth-regrowing ability may not save them from ocean acidification. Researchers found that future acidic waters cause shark teeth to corrode, crack, and weaken, threatening their ...

One of a blacktip reef sharks’ top teeth as seen under a scanning electron microscope. CREDIT: Maximilian Baum (HHU) / Steffen Köhler (HHU). Get the Popular Science daily newsletter💡 Breakthroughs, ...