David Attenborough's Natural...

BBC TWO

Thursday 30 July 2020  13:45 - 14:15 (30 mins)
...Curiosities. 5/6. David Attenborough investigates two shells that have proved to be winners in evolution: the tortoise's shell and the shells of birds' eggs. Also in HD. [S,AD]

David Attenborough's Natural... may be available on playback
David Attenborough's Natural... (BBC TWO) Thursday 30 July 2020 13:45 - 14:15