Season 33

Leopards are built for strength rather than speed, hunting in the shadows and ambushing their prey. In an ever shrinking world, their lives are colliding with people - attacks are reported regularly and hundreds of these big cats are stoned, trapped or shot.

The giant squid, a creature of legend and myth which even in the 21st century, has never been seen alive. But now, an international team of scientists think they have finally found their lair, one thousand metres down, off the coast of Japan. This is the culmination of decades of research. The team deploys underwater robots and state of the art submersible vessels for a world first - to find and film the impossible.