Excavations on the Indonesian island of Sulawesi have uncovered two unique and deadly artifacts dating back some 7,000 years — tiger shark teeth that were used as blades. These finds ...

Certain shark species can have hundreds to thousands of teeth at a time that are consistently yanked out or broken by feasting on prey, according to National Geographic. Marine biologist Jillian ...

The megalodon, a giant shark that went extinct some 3.6 million years ago, is famous for its utterly enormous jaws and correspondingly huge teeth. Recent studies have proposed that the megalodon ...

Fossils of the extinct giant are hard to come by. While there are plenty of fossilized shark teeth, their bodies mainly consist of cartilage rather than bones, and are rarely preserved.

More than luck, it’s taken him years of preparation with his love of shark teeth hunting only growing stronger. “It’s one of those things that never gets old,” Nastasio said.

Perez wrote his PhD thesis on shark fossils in Florida and has given many lectures about shark teeth. He said there are around 70 known species of sharks and rays in Florida’s fossil record, and ...