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 ...

Growing up, I never loved jewelry. But I’ve been wearing the same necklace for the past year: a wrapped lemon shark tooth ...

For much of the twentieth century, sharks and large reptiles were assumed to define the upper limits of dental sharpness in the history of life. That assumption has been revised by detailed ...

Sharks are more formidable and mysterious than we imagined. Scientists have found evidence the warming ocean might actually make their notoriously deadly teeth more durable. The study, published Jan.

Tens of million years ago, sand tiger sharks hunted in the waters off the Antarctic Peninsula, gliding over a thriving marine ecosystem on the seafloor below. All that remains of them today is their ...

"Our results show that the shape of shark teeth changes gradually and subtly during the shark's life: The teeth become larger on the one hand and more complex on the other" , Türtscher says. As such ...

Add Yahoo as a preferred source to see more of our stories on Google. Some sharks are defined by more than just their size—their teeth are what truly set them apart. From razor-sharp rows built for ...

Because of the colder water temperatures, polar oceans are especially vulnerable to acidification. ©Mozgova/Shutterstock.com The International Atomic Energy Agency (IAEA)’s Ocean Acidification ...