SEASON: 4
EPISODE: 5 - Incredible Shells
SYNOPSIS
David Attenborough investigates two shells that have proved to be winners in evolution: the formidable bird's eggshell and the hard shell of the tortoise.
SEASON: 4
EPISODE: 5 - Incredible Shells
David Attenborough investigates two shells that have proved to be winners in evolution: the formidable bird's eggshell and the hard shell of the tortoise.
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