Internal Adaptations • 2017 • episode "3/6" Mysteries of Evolution

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Clownfish can change genders, male seahorses carry their young, and some snakes have remnants of leg bones--but why? Discover how significant evolutionary changes inside these creatures have equipped them for survival.

Mysteries of Evolution • 2017 • 6 episodes •

Amazing Head Adaptations

Why are vultures bald? Why do some orangutans have big cheeks? And if giraffes have long necks to help them reach the highest leaves, why do they mostly eat low-lying shrubs? Embark on a whirlwind tour around the world as we explore some of nature's most-fascinating evolutionary wonders.

2017 • Nature

Human Influence

When did we start riding horses? When did dogs become man's best friend? Answering questions like these help us understand our impact on other species' evolutionary journeys - a crucial step toward ensuring our survival doesn't necessarily come at the expense of their own.

2017 • Nature

Internal Adaptations

Clownfish can change genders, male seahorses carry their young, and some snakes have remnants of leg bones--but why? Discover how significant evolutionary changes inside these creatures have equipped them for survival.

2017 • Nature

Incredible Eye Adaptations

From penguins whose salt-removing eye glands shield them from the harsh ocean to caterpillars whose fake facial markings are meant to mimic a snake's, animals have evolved in amazing ways to see and be seen. Meet these creatures and see how they use eyes and illusions to their advantage.

2017 • Nature

Animal Social Lives

Bees and ants work selflessly toward a common goal. Bonobos maintain social harmony through sex, while meerkats organize themselves with military-level discipline. What do these creatures all have in common? The basic recognition that their survival hinges on an ability to work and live together.

2017 • Nature

Ancient Species

The older a species, the better it is at adapting to change. From the ancient lineage of sharks, who've evolved into perfect predators, to the living fossil known as the bichir, get a closer look at some of nature's enduring evolutionary masters.

2017 • Nature

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Social Life

Sharks are more than just hunters. Only now are discoveries revealing a hidden side to their character. They have an intricate social life, complex courtship rituals, surprising ways of bringing up their young and extraordinary powers of navigation. They can forge relationships with the strangest of partners, even humans.

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The Hardest Challenge

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The Great Flood

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