Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those weapons at risk.

A recent study suggests that male ghost sharks, also known as chimaeras, use an unusual organ for mating – sharp teeth that grow out on their foreheads. Unlike other sharks and rays, ghost sharks do ...

How will the climate crisis affect one of the ocean’s fiercest predators? New research published Wednesday has examined what might happen to sharks’ highly specialized, flesh-cutting teeth. As carbon ...

A new genome-based study suggests that ancient sharks like frilled and cow sharks could sit outside the family tree that ...

Bull sharks (Carcharhinus Leucas) are one of the ocean’s most fearsome creatures. Although some animals may prey on bull sharks, such as crocodiles, killer whales, and the occasional great white shark ...

Before we start talking about tiger shark teeth, get to know the shark that these teeth come from. Tiger sharks, like many other shark species (but not all of them), are solitary creatures. They tend ...

Editor’s note: Every year, hundreds of undergraduates at the University of Delaware pursue research under the guidance of a faculty mentor. Such experiences provided by UD — a nationally recognized ...

Wildlife officers in Ireland unearthed 330-million-year-old fossilized shark teeth, predating dinosaurs. These Psephodus ...