When you think about sharks, the first thing that might come to mind are huge jaws filled with rows of deadly-looking teeth. But shark teeth come in many shapes and sizes. They can tell us how these ...

This is the moment a blood-soaked influencer asked friends ... swimming off the coast of the paradise islands when a shark sunk its teeth into her hand. Footage shows a tearful Vitonova ...

Shark teeth vary in size and shape according to what ... The gills are packed with blood vessels, which absorb oxygen from the seawater. This is how they breathe. Some species must continually ...

Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime.

Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that looks at variations in ocean strontium. Strontium is a chemical element that occurs ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times, according to our newly published work. Our study was one ...