The blue whale is famously the largest animal in the world, but this simple fact doesn't do these creatures justice. They aren't just the biggest animals in the world today, but the biggest known ...

The episode, witnessed off the Australian coast, offers a rare glimpse into the brutal efficiency of the ocean’s top predator.

Five families of orcas joined forces to hunt down and feed on a blue whale, the largest creature on the planet, in what was an extremely rare sighting off Australia. More than 60 orcas worked ...