After decades of mystery surrounding the perfectly circular wounds found on fish and marine mammals, researchers have finally ...

In the deep ocean, far from sunlight, a small shark has been quietly carving perfect circles of flesh out of animals many ...

STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

MOUNT PLEASANT — Like 49ers rushing west to find gold, Lowcountry residents have crowded the Crab Bank Seabird Sanctuary in search of shark teeth. Dozens of sharp-eyed scavengers spent the past few ...

Some male “ghost sharks” have a bizarre way of giving love bites: They use teeth that sprout from their foreheads. These otherworldly animals, also known as spotted ratfish, can grab onto mates using ...

Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed the tenaculum’s teeth develop the same way as those inside the mouth, ...

Male "ghost sharks"—eerie deep-sea fish known as chimaeras that are related to sharks and rays—have a strange rod jutting from their foreheads, studded with sharp, retractable teeth. New research ...

Sharks have been on this planet for more than 400 million years. They’re older than the first trees, the North Star, and even the rings of Saturn. They’ve seen and been through it all — but the ...

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, ...

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 ...

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 ...

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...