A shark that walks on land at low tide just turned up in one of the ocean's most remote corners, and scientists are already worried it could vanish before we fully understand it.

Sharks kill a handful of people each year, yet the ocean's most feared predators face threats so severe that the real danger ...

With a bulging head that looks like it swallowed a gavel, there's no mistaking the animal: It’s a hammerhead shark. Across the globe, there are more than nine hammerhead species, many of which are ...