Armoured Giants

David Attenborough meets the reptile heavyweights - the tortoises, turtles and crocodiles, showing what it's like to live within a suit of armour, and revealing a dynamic, warm and caring side to these ancient giants.Mating giant tortoises fit together like spoons, green turtles passionately mate in tropical seas, a mother spectacled caiman rescues a huge creche of babies and sophisticated saltwater crocodiles ambush fish just like bears catching salmon.