Combining fact and informed speculation with cutting-edge computer graphics and animatronics effects, the series set out to create the most accurate portrayal of prehistoric animals ever seen on the screen.

The largest predator on the planet, the sperm whale, is your host for an amazing exploration of the final frontier – the world at the bottom of the ocean. From the makers of the Walking With series comes this incredible marine tour, in which you'll witness a rarely seen world of hidden mountain ranges, majestic canyons, volcanoes and the beautiful and often deadly creatures that inhabit the deep sea.

145 million years ago an adolescent Allosaurus lay down to die in a dried up river bed. In 1991 scientists discovered his perfectly preserved body and nicknamed him Big Al. This is the story of this predatory dinosaur's life - how he grew from a tiny hatchling to the terror of the Jurassic plains, why his body was covered in so many wounds and how he ended up in the river bed. The second part tells the story of the extraordinary forensics, spectacular paleontological finds and intricate studies of Al's closest living relatives to unravel his intriguing life for the film.