Shark

A look at how sharks are the ocean's great predators, living in every ocean and hunting in a variety of ways. Blacktip sharks hunt in packs and herd fish into baitballs and tasselled wobbegongs are ambush hunters.

Discoveries reveal a hidden side to shark character. They have an intricate social life, complex courtship rituals, surprising ways of bringing up their young, and extraordinary powers of navigation.

Sharks are among the most misunderstood predators on the planet, but an international team of scientists is trying to change that. Their research is revealing that sharks can be sociable and intelligent, and they could even help solve some of the toughest medical challenges of the 21st century. However, their breakthroughs come just as many sharks face extinction. Science may now be the only way to save them.