Incredible Shells
Description
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.
Runtime
22 min 21 sec
Series
Subjects
- Animals (402)
- Life sciences (447)
- Animal diversity (73)
- Sexual behavior in animals (81)
- Biodiversity (348)
- Evolution (Biology) (216)
- Behavior (77)
- Animal behavior (299)
- Zoology (207)
Database
Films on Demand
Direct Link
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