David Attenborough's Natural Curiosities 4. Sezon 5. Bölüm

• Dizi Sayfası

David Attenborough investigates two shells that have proved to be winners in evolution: the bird’s shell and the hard shell of the tortoise. The ostrich egg is so strong it’s possible for a person to stand on it without it breaking – how does the chick break out of this fortress? The evolution of the tortoise shell was for a long time a mystery and this bony box offers a lot more than just protection. dizifrag.co iyi seyirler diler.