With the sand came a plethora of shells and shark teeth, making Palm Beach Island a hunting ground for shark tooth finders. Although the island is a playground for the rich, those who aren't ...

Like human teeth, shark chompers contain collagen ... When the researchers zeroed in on one species—the sand tiger shark—they found that it has moved up the food chain over time to become ...

They are large-bodied and display a mouthful of sharp teeth that protrude in all ... in size from 6.5 to 10.5 feet in length. Sand tigers are the only shark known to come to the surface and ...

Shark sex is a bitey business, with males grasping females with their teeth during the act. The resulting wounds are helping scientists to figure out when and where sharks are doing the deed.

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.