David Attenborough’s Natural Curiosities (2013 – 2017)

2013 • 4 seasons • Documentary

8.6/10 858

73% 19

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On August 10, 2026

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Episode 5 — Incredible Shells

Name: Episode 5 — Incredible Shells
Released: 2017-06-25
Duration: 30 min
Rating: 8
Cast: David Attenborough

Season 4 • David Attenborough’s Natural Curiosities

Released: 2017-06-25 • Documentary

80%

User score

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.

Where to Stream Episode 5

Season 4 · Episode 5 · Streaming in USA

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Episodes

Episode 1
Animal Frankensteins
2017-06-11

Episode 2
Finding the Way
2017-06-11

Episode 3
Extreme Babies
2017-06-18

Episode 4
Curious Counters
2017-06-18

Episode 5
Incredible Shells
2017-06-25

Episode 6
Ferocious Fighters
2017-06-25

Information

Episode air date	25.06.2017
Episode runtime	30 min
Episode rating	8.00
Genres	Documentary
TMDB series rating	7.3
IMDb series rating	8.6
Series status	Ended
Age rating	—
Country	GB

Cast

David Attenborough
Self - Presenter

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