Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living ...

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat.

A group of whitetip reef sharks (Triaenodon obesus) resting under a table coral off the coast of Indonesia, one of the world's current ...