The true size of a gigantic prehistoric megalodon shark that ruled the oceans millions of years ago has been revealed for the first time -- and it had teeth as big as hands, and a fin as tall as a ...

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 ...

A rendering of Clavusodens mcginnisi, or “McGinnis’ nail tooth,” an ancient shark that stalked the ocean floor 340 million years ago. Rendering courtesy of the National Park Service A shark no larger ...

Shark teeth could lose their cutting edge as oceans become more acidic, new research warns. Scientists in Germany say rising carbon dioxide levels may erode the very weapons that predators rely on for ...

Most kids have a natural curiosity about sharks − especially their sharp and abundant teeth. Our team had the idea to use the appeal of this charismatic apex predator to teach how scientists use ...

Shark feeding habits are helping scientists identify marks on human bones found in the ocean. By analyzing shark scavenging behavior, the University of Florida's C.A. Pound Human Identification ...