As a hermit crab grows its shell becomes a tighter fit so eventually the crabs need to move into a bigger one, leading to an amazing exchange. Taken from Life Story. Subscribe to BBC Earth: http://bit.ly/ydxvrP

Watch David Attenborough Dynasties series trailer here: https://www.youtube.com/watch?v=JWI1eCbksdE --~--

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New on Earth: https://bit.ly/2M3La96
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Wild Thailand: https://bit.ly/2kR7lmh

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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Which marvel of nature can build a 2 metre Orb Web with a silk that ranks as the world's toughest natural fibre? The answer is the Darwin's Bark Spider. Taken from The Hunt. Subscribe to BBC Earth: http://bit.ly/ydxvrP

Watch David Attenborough Dynasties series trailer here: https://www.youtube.com/watch?v=JWI1eCbksdE --~--

WATCH MORE:
New on Earth: https://bit.ly/2M3La96
Oceanscapes: https://bit.ly/2Hmd2kZ
Wild Thailand: https://bit.ly/2kR7lmh

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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Danny the Koala cub gets a night time walkabout as part of his rehabilitation. Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub

Nature's Miracle Orphans:
Filmed in Africa and Costa Rica, this series meets animals with some extraordinary survival stories, and follows the people who are helping them get back to a life in the wild.

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About BBC Earth:
The world is an amazing place full of stories, beauty and natural wonder. Explore the official BBC Earth YouTube channel and meet the animals and wildlife of your planet. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history documentaries. Dramatic, rare and wild nature doesn't get more exciting than this. Subscribe to be the first to view new animal documentary videos. You can also become part of the BBC Earth community on Facebook, Twitter and Instagram. Here you'll find the best natural history content from the web, exclusive videos and images and a thriving, vibrant community. Want to share your views with the team behind BBC Earth and win prizes? Join our fan panel here: http://tinyurl.com/YouTube-BBCEarth-FanPanel

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Taken from Snow Wolf Family And Me. In such a harsh and wild environment it's wonderful to see the family strength and community of a wolf pack and how they interact with a human in there domain.

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Deers look out for each other in groups, but a lone baby deer is not match for a hungry tiger.
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Natural World: Return of The Tiger
Five years ago the tigers of Sariska Reserve, India, were completely wiped out by poachers. This beautiful film follows a female tiger and a hot-blooded male over 18 months as they try to establish their new territory, learn to hunt their prey and dodge the ever-present threat of poachers.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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How do hippo calfs feed? How to hippos travel underwater. There's a lot more to hippos, beneath the surface.
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Natural World: Hippos https://bbc.in/2yfmBjI

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Planet Earth http://bit.ly/PlanetEarthPlaylist
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Natural World: Hippos
The hippo. A territorial beast that spends most of its time in water. An aquatic mammal that can't swim. A two-tonne hulk that can sprint faster than a human. And a seemingly placid oaf that guards its family with fierce cunning. Using specialist camera technology to get up close and personal with hippos for the very first time, this film follows these animals through the seasons in the Okavango Delta. It reveals that while hippos may be boisterous, aggressive and bold, they are also sensitive, sociable and often comical. An intimate, immersive portrayal revealing a side of hippos never seen – or heard – before.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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A herd of migrating Centrosaurs walk into a massacre at the hands of Daspletosaurus and the weather. Narrated by John Hurt, 'Planet Dinosaur' tells the stories of the biggest, deadliest and weirdest creatures ever to walk the Earth, using the latest fossil evidence and immersive computer graphics.

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The sky is dangerous enough, but can these chicks survive learning to fly in shark infested water? Narrated by David Attenborough.
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The Trials of Life

This is the third in Sir David Attenborough's epic Life series, following on from Life on Earth and The Living Planet. It begins with the ways in which animals arrive in the world and ends with the extraordinary techniques they employ to reproduce. In between, there are the other trials we all have to face: building a home, finding food, rearing children and getting on with friends and rivals.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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Prepare to have your skin crawl as we relive some of our creepiest insect moments! From Wetas that resurrect themselves from beyond the grave to being eaten whole by giant snails - it's about to get creepy.
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Planet Earth http://bit.ly/PlanetEarthPlaylist
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Planet Dinosaur http://bit.ly/PlanetDinoPlaylist

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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From pigs to bees to parrots - here are some of the most intelligent animals from the BBC archive!
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Blue Planet http://bit.ly/BluePlanetPlaylist
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Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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A lone elephant is hunted by an aggressive pack of lions - will it be able to escape in time?

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Taken from 'Planet Earth':
In this harrowing clip from the award-winning BBC Planet Earth series, Sir David Attenborough explores the danger elephants face when sharing a water hole with desperate, starving lions.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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A young tiger cub - one of a littler of four - tumbles from the den, only to be carried back to safety in it's mother's massive jaws. Astonishing footage shot in the Indian jungle using cameras attached to elephants.

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From sparring kangaroos to enormous crocodiles, here are some of our favourite animals from the world's wildest continent.
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Planet Earth http://bit.ly/PlanetEarthPlaylist
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Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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From the raging rivers of Patagonia to the dry canyons of Brazil, South America has some of the most diverse wildlife on the planet. Join us as we explore the hidden wonders of this incredible continent.
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Planet Earth http://bit.ly/PlanetEarthPlaylist
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Planet Dinosaur http://bit.ly/PlanetDinoPlaylist

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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A female in the group chases after the dominant silverback in order to mate with him. But his lack of interest pushes her towards one of the more juvenile adults instead. Subscribe: http://bit.ly/BBCEarthSub

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Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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With their big heads and beady black eyes, Jerusalem crickets aren't winning any beauty contests. But that doesn't stop them from finding mates. They use their bulbous bellies to serenade each other with some furious drumming.

Support Deep Look on Patreon! https://www.patreon.com/deeplook
Come join us on our Deep Look Communty Tab: https://www.youtube.com/user/K....QEDDeepLook/communit

--

DEEP LOOK is an ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.

Potato Bug. Child of the Earth. Old Bald-Headed Man. Skull Insects. Devil’s Baby. Spawn of Satan. There’s a fairly long list of imaginative nicknames that refer to Jerusalem crickets, those six-legged insects with eerily humanlike faces and prominent striped abdomens. And they can get quite large, too: Some measure over 3 inches long and weigh more than a mouse, so they can be quite unnerving if you see them crawling around in your backyard in summertime.

One individual who finds them compelling, and not creepy, has been studying Jerusalem crickets for over 40 years: David Weissman, a research associate in entomology affiliated with the California Academy of Sciences in San Francisco. He’s now considered the world’s foremost expert, since no one else has been as captivated or singlemindedly devoted to learning more about them.

While much of their general behavior is still not widely understood, Jerusalem crickets typically live solitary lives underground. They’ll emerge at night to scavenge for roots, tubers and smaller insects for their meals. And it’s also when they come out to serenade potential partners with a musical ritual: To attract a mate, adult crickets use their abdomens to drum the ground and generate low-frequency sound waves.

If a male begins drumming and a female senses the vibrations, she’ll respond with a longer drumming sequence so that he’ll have enough time to track her down. The drumming can vary between one beat every other second up to 40 beats per second.

---+ Read the entire article on KQED Science:
https://www.kqed.org/science/1....932923/jerusalem-cri

---+ For more information:

JERUSALEM! CRICKET? (Orthoptera: Stenopelmatidae: Stenopelmatus); Origins of a Common Name https://goo.gl/Y49GAK

---+ More Great Deep Look episodes:

The House Centipede is Fast, Furious, and Just So Extra | Deep Look
https://youtu.be/q2RtbP1d7Kg

Roly Polies Came From the Sea to Conquer the Earth | Deep Look
https://youtu.be/sj8pFX9SOXE

Turret Spiders Launch Sneak Attacks From Tiny Towers | Deep Look
https://youtu.be/9bEjYunwByw

---+ Shoutout!

?Congratulations ? to Piss Dog, Trent Geer, Mario Stankovski, Jelani Shillingford,
and Chaddydaddy who were the first to correctly 3 the species of Jerusalem Cricket relatives of the Stenopelmatoidea superfamily in our episode, over at the Deep Look Community Tab:

https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK

(hat tip to Antonio Garcia, who shared 3 full species names)


---+ Follow KQED Science and Deep Look:

Instagram: https://www.instagram.com/kqedscience/
Twitter: https://www.twitter.com/kqedscience
KQED Science on kqed.org: http://www.kqed.org/science
Facebook Watch: https://www.facebook.com/DeepLookPBS/
Patreon: https://www.patreon.com/deeplook

---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.

Funding for Deep Look is provided in part by PBS Digital Studios. Deep Look is a project of KQED Science, which is also supported by the National Science Foundation, the Templeton Religion Trust, the Templeton World Charity Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Fuhs Family Foundation and the members of KQED. #deeplook #jerusalemcrickets #wildlife

Every fall, male tarantulas leave home for good with one thing on their minds: sex. But before these spiders can make the ultimate connection, they have to survive the perils of the open road...which include their potential mates.

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DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.

--

Every September, a generation of newly mature male tarantulas leave their underground homes to wander the landscape south of La Junta, Colorado, to look for mates. The lucky males will find females, who remain near their dens the whole lives, and possibly mate. But this so-called “migration” is a one‐way trip.

Among the many risks for these itinerant tarantulas, besides running out of time and becoming roadkill, are the local tarantula hawks. The two‐inch long, blue‐and‐gold wasps pounce on the unsuspecting arachnid travelers, hit them with a paralyzing sting, then drag them off to their lairs. Once there, the female wasp lays an egg on the spider that eventually hatches into a larva. The larva burrows inside him to feast and grow before emerging from his body, Alien‐like, as an adult.

If a male does survive long enough to find a den, he courts the female by first “knocking” at the entrance by tapping the ground with his front mouth parts, called pedipalps. He must rely on vibration to communicate his intentions, since tarantulas are mostly blind. If the larger and more dangerous female comes out to investigate, they face off at the den entrance. She may reply with drumming of her own to indicate that she’s receptive ‐‐ or she might try to eat him.

But he’s come prepared. When male tarantulas reach maturity, right before they set out on their quest, they develop a special set of clasps on their front legs called “tibial hooks.” Tibial hooks serve a single purpose: to fasten underneath the female’s fangs during courtship, allowing him to keep danger at arm’s length, so to speak.

--- Are tarantulas dangerous?

Though they do have venom, tarantulas don’t typically bite humans. If they do, the bite hurts no more than a papercut.

--- How long do tarantulas live?

The adult males of this species usually only live ten years, but females can live much longer, 30-40 years.

---+ Read the entire article on KQED Science:

https://www.kqed.org/science/1....950117/tarantulas-ta

---+ For more information:

Visit the Colorado State University Bug Zoo site:
https://bspm.agsci.colostate.edu/the-bug-zoo/

---+ More Great Deep Look episodes about spiders:

Turret Spiders Launch Sneak Attacks From Tiny Towers
https://www.youtube.com/watch?v=9bEjYunwByw

Why the Male Black Widow is a Real Home Wrecker
https://www.youtube.com/watch?v=NpJNeGqExrc

---+ Shoutout!

?Congratulations ?to the following fans on our YouTube community tab for correctly identifying the body part that male tarantulas use for drumming up interest from females - the pedipalps!

Mitchel Castellon
TheWhiteScatterbug
Ian B
Dragim Yutto
Lydia Liu

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---+ About KQED

KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.

Funding for Deep Look is provided in part by PBS Digital Studios. Deep Look is a project of KQED Science, which is also supported by the National Science Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Fuhs Family Foundation, Campaign 21 and the members of KQED.

#tarantula #deeplook #spiders

Every winter, California newts leave the safety of their forest burrows and travel as far as three miles to mate in the pond where they were born. Their mating ritual is a raucous affair that involves bulked-up males, writhing females and a little cannibalism.

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These amphibious creatures are about five to eight inches long, with rust-colored skin, except for their bright yellow eyes and belly. They began to arrive at the UC Botanical Garden around November, and will stay here for the duration of the rainy season, usually through the end of March.

While California newts (Taricha torosa) are only about six inches long, they might travel as far as three miles to return to their birthplace. That's the equivalent for a human of walking about a marathon and a half, without any signs or road maps. Scientists aren't sure exactly how they find their way, but they think it might be based on smell.

Why do newts live in a pond? California Newts live most of their time in the forest, but mate in the pond where they were born.

Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is supported by HopeLab, The David B. Gold Foundation; S. D. Bechtel, Jr. Foundation; The Dirk and Charlene Kabcenell Foundation; The Vadasz Family Foundation; Smart Family Foundation and the members of KQED.
#deeplook

DEEP LOOK - Watch science and nature videos up close (really, really close). Twice a month, get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small. DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios.

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All-NEW EPISODES EVERY OTHER TUESDAY!

More about our new host, Lauren Sommer: http://blogs.kqed.org/pressroo....m/deeplooknewhostvid
#deeplook

DEEP LOOK - see the unseen at the very edge of our visible world. Twice a month, get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small. DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios.

SUBSCRIBE: http://goo.gl/8NwXqt

All-NEW EPISODES EVERY OTHER TUESDAY!
#deeplook