At a book talk, marine conservationist David Shiffman explained why he adores sharks and how we can help save them from extinction.

Just about every creature on Earth needs to grab some Zs from time to time. Imagine trying to doze while dodging great whites and killer whales.

Researchers have compiled the largest set of data showing how 38 species of sharks, rays, and skates move vertically in oceans around the world.

The megalodon was an even more fearsome predator than previously thought, able to take down prey the size of modern orcas.

The first hammerhead shark was likely the result of a genetic deformity. A biologist explains how shark DNA reveals hammerheads’ history.

Megalodon, the world’s largest known shark species, swam the oceans long before humans existed. Its teeth are all that’s left, and they tell a story of an apex predator that vanished.

A terrifying sight in ancient waters, the megalodon shark was once the most feared creature in the sea.

As the oceans warmed, great whites were more adaptable.

Researchers examined teeth from a megalodon, a school bus-sized prehistoric shark, to find out the root cause of what must have been a painful toothache.