Shark sex is a bitey business, with males grasping females with their teeth during the act. The resulting wounds are helping ...

Geneticists are studying how sharks continually produce new teeth to explore if this genetic trait could help doctors grow human teeth in the future. Sharks’ teeth are made from a very hard substance ...

Humans, as well as all other living jawed vertebrates like sharks, reptiles and mammals, are all descended from the first jawed fish. Today, we see distinct patterns in this area, like new teeth ...

Their skin is covered with denticles, tooth-like scales that differ from ... are thought to be even faster. Youngest shark to bite a human: A marine biologist, while probing the uterus of a ...

Charles Shelton Jr. has collected thousands of shark teeth, jaws and other fossils over the past three decades. He now shares ...

It may have been comparable in length to today's biggest whale sharks, the largest of which has measured in at 18.8 metres. Without a complete megalodon skeleton to measure, these figures are based on ...

The most common threats to sharks and rays worldwide include overfishing and a demand for their fins, habitat and prey loss, and human disturbance. According to DLNR’s Division of Aquatic ...