Why Do Things Keep Evolving Into Crabs?

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For some reason, animals keep evolving into things that look like crabs, independently, over and over again. What is it about the crab’s form that makes it so evolutionarily successful that non-crabs are apparently jealous of it?
Thanks to Franz Anthony for all of the ancient crab (and "crab") illustrations featured throughout this episode! And special thanks to Dr. Jo Wolfe, Dr. Javier Luque, and Dr. Katie Collins for assisting Franz with research for those illustrations.
And thank you to Dr. Rodney Feldmann for providing a photo of the Paralomis debodeorum fossil!
Produced in collaboration with PBS Digital Studios:
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Science et technologie



28 oct. 2020




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Commentaires 100
Aaron Giebel
Aaron Giebel Il y a 47 minutes
Plot twist: Thd wanna be crabs are actually the true crabs
fiveironbrad Il y a 52 minutes
No crab has ever evolved from a non-crab.
Isaac Kalashnikov
Isaac Kalashnikov Il y a 2 heures
Atheists be like: I love my gandkids ->🦀🦀🦀
ダーク Il y a 2 heures
The ultimate lifeform
Lolalina Il y a 2 heures
Crabs somehow look like spiders🤮
TheMasterlauti Il y a 3 heures
time for crab
Eric The Roman
Eric The Roman Il y a 5 heures
Mihael Gyöfi
Mihael Gyöfi Il y a 5 heures
True crab
Martín Tamay
Martín Tamay Il y a 6 heures
And, its not only crab like, but spider like too
Alchemispark Il y a 6 heures
Dread it, run from it, in the end all animals will evolve into crabs
Eric Posatko
Eric Posatko Il y a 6 heures
Can you dial back the "pandering to the youth" factor a few notches please? The subject matter is interesting enough by itself.
Jeff Neinenstein
Jeff Neinenstein Il y a 6 heures
Broke: Return to Monke Woke: Return to Crab
LoxyDoe Il y a 6 heures
Matthew Torres
Matthew Torres Il y a 6 heures
traildoggy Il y a 6 heures
"Now Zoidberg is the popular one!"
J K Il y a 6 heures
Craaaab people, craaaaab people. Taste like crab, talk like people.
Napkep Il y a 7 heures
it's crabs all the way down
Ronyx Il y a 7 heures
i read it as crabs as the std and not like the animal so i thought do moment someone just kept having everything turn into a std
eg eg
eg eg Il y a 7 heures
tldw pls
User plays Video Games
User plays Video Games Il y a 7 heures
cuz they cool
rico567 Il y a 8 heures
Well, it’s not like the two groups under discussion were sponges and mice. That WOULD be remarkable....
Deadly Tuxedo
Deadly Tuxedo Il y a 8 heures
reject modernity embrace the crab
Lillie George
Lillie George Il y a 9 heures
so i watched the whole thing and i still dont get what makes one species a "true crab" and one not. lots of good explanation on how they changed to look like crab? but how can u tell one crab used to be a lobster and one didnt?
i 0utcast
i 0utcast Il y a 9 heures
Yes Crab
B o n k Time
B o n k Time Il y a 9 heures
Head crab
Alessandro Morelli
Alessandro Morelli Il y a 10 heures
if we were like crabs we would be: -stronger -sturdier crabs are peak performance
Isabelle Woltering
Isabelle Woltering Il y a 11 heures
I can’t wait for the day we reject our human form and become... c r a b
Ian Il y a 11 heures
Spidr is tipe of Crabe?
Mikhail Kataev
Mikhail Kataev Il y a 12 heures
„Reject humanity,return to monke“ *abandon humanity,progress to crab*
Apos Eastwood
Apos Eastwood Il y a 14 heures
Wait, it's all crabs? Always has been
Edison Phua
Edison Phua Il y a 15 heures
DISTRESS Il y a 15 heures
me- haha lol everything keeps evolving to crabs hahahaha (suddenly stops laughing) *wait a minute* (starts crying in 4k)
Edison Phua
Edison Phua Il y a 15 heures
Edison Phua
Edison Phua Il y a 15 heures
You either die a hero, or you live long enough to see yourself become *CRAB*
Aurora O.
Aurora O. Il y a 17 heures
Everyone can clearly see that most metal bands are evolving into crabs.
Roger Szmodis
Roger Szmodis Il y a 18 heures
Why not Zoidberg? - Evolution
Rodrigo Sanz
Rodrigo Sanz Il y a 22 heures
Reject humanity, become crab.
Big D Slav Dog
Big D Slav Dog Il y a 22 heures
reject human become crab
p0sthum4n Il y a jour
Friendship ended with lobsteriform, now crabiform is my best friend
Jan Raubo
Jan Raubo Il y a jour
Why am I here
Ethan Frigerio
Ethan Frigerio Il y a jour
crabs are perfect beings confirmed
captloki13 Il y a jour
Cretaceous Era: Crabs are so hot right now!
captloki13 Il y a jour
Everything is crab 🦀 c r a b d a n c e 🦀
K_Kylo Il y a jour
Crab is the perfect being CONFIRMED.
G G Il y a jour
Crab looks bomb to eat right now
Donwell Il y a jour
I’m craving for crabs 🤤
doodle bob
doodle bob Il y a jour
return to crab
TheNintendoDude Il y a jour
I want to be a crab
Fly high.
Fly high. Il y a jour
Why? Dr Ho: Why ?! Because it works!! PD: Crabs are the less flexible animal on earth.
Ahh yes Stoinks
Ahh yes Stoinks Il y a jour
Men i had it when i always start evolving into crabs SMH
N3Queasy Il y a jour
Crab sus
Pepsi Dog
Pepsi Dog Il y a jour
Evolving things into crabs is all part of operation CRAB CRAB
Thunder Blitz
Thunder Blitz Il y a jour
Reject Humanity Reject Modernity Reject Monkee *BECOME CRAB*
TheUnknownG1 Il y a jour
Reject humanity, become cråb
Jmvd1234 Il y a jour
Ah sh*t, I accidentally turned into a crab again.
BanditOfBandwidth Il y a jour
what a load of crab
KiongSS Il y a jour
Abandon longness, return to crab
co2 hashoil
co2 hashoil Il y a jour
Grimmdul Il y a jour
I told you people years ago: This is all a plot of the crab people!
GabeN_____ Studio
GabeN_____ Studio Il y a jour
wait, is all crab?
James Espinosa
James Espinosa Il y a jour
I think we're safe as long as we dont get air crabs.
Lonny Bunny
Lonny Bunny Il y a jour
Wow. I love this man.
Si Señor
Si Señor Il y a jour
Coconut 🥥 crabs 🦀 are scary 😧.
maplemusic52 Il y a jour
the Il y a jour
crabs are the ultimate life form
Leto Enchanted
Leto Enchanted Il y a jour
I see so being crabs back then is like us being Vtubers.
Clayton Prather
Clayton Prather Il y a jour
Wait everything evolves into crabs? So? CRAB PEOPLE CRAB PEOPLE!
Juan Manuel Tamayo Perez
I want to be a crab. Please mrs. evolution, can I be a crab?
Candie Cotton
Candie Cotton Il y a 2 jours
well, pepole might have a similiar problem with pikachus in pokemon universe
MrAalaufreis Il y a 2 jours
youtube why are there so much ads.
David Bacote
David Bacote Il y a 2 jours
Envious of it, not jealous. One is envious for something you don't possess, jealous for something you do possess.
M3D13V4L Il y a 2 jours
T Rex didn't have feathers.
Funkopedia Il y a 2 jours
the obvious nickname for the crab period is "The Crustaeceous"
Cujoh Shaggy
Cujoh Shaggy Il y a 2 jours
Reject modernity, evolve into crab.
Thierry Decker
Thierry Decker Il y a 2 jours
Reject Humanity, Turn to Creb
Salamandius Braveheart
Salamandius Braveheart Il y a 2 jours
More difficult to eat them obviously
Daniel Castillo
Daniel Castillo Il y a 2 jours
You can only go two ways in evolution: Crocodile and crab, each and every other species in this earth is on it's way to one of the two forms
Dave Cooke
Dave Cooke Il y a 2 jours
"You are very clever, Sir, but it's crabs all the way down!"
Kaiser Sosebee
Kaiser Sosebee Il y a 2 jours
Kars lost because he didn't know the power of the *CRAB*
崔莱 Il y a 2 jours
I mean who wouldn't want to become a crab? You're basically a tank with spikes, you have 8 legs that can take you anywhere, you get two huge weapons, you can eat just about anything, and your breathing system is fully amphibious. Hell I wanna be a crab.
ketjap djeruknipis
ketjap djeruknipis Il y a 2 jours
Great info, nicely paced, melodious voice. Narrator can be more impersonal by cutting personal jokes away. I mean, this program start as science program that require (!arguable) narrator. Not narrator's program with science thing sprinkled in.
Doc Holliday
Doc Holliday Il y a 2 jours
I love the implied exasperation of the title. Like some marine biologist is just looking around at his textbooks and in a moment sudden realization exclaims "why do things keep evolving into crabs!?"
Marc Pilit
Marc Pilit Il y a 2 jours
An actually funny narrator which could tell anything and make it entertaining.... Weird but interesting topics to discuss... You my good sir have earned a new subscriber
Why do I exist ?
Why do I exist ? Il y a 2 jours
Can't wait for the crab to evolve into crab
bob jeffery
bob jeffery Il y a 2 jours
dislikers are the ones who haven't evolved yet
Exu Il y a 2 jours
🦀↗️ Cronks
John Carlo Andrade
John Carlo Andrade Il y a 2 jours
And monki evolving into society
Bignachos Il y a 2 jours
Crab People Crab people
The Normalizer
The Normalizer Il y a 2 jours
We may be turning into crabs as we speak
Crazy Orange
Crazy Orange Il y a 2 jours
Sick Plate Tricks
Sick Plate Tricks Il y a 2 jours
I'm going back into ocean in hopes I become the ideal lifeform A crab
Jules Life
Jules Life Il y a 2 jours
South Park: CraaAAaab people! CraAaAaab people!
J&JF 9
J&JF 9 Il y a 2 jours
Reject humanity, embrace crab
Isaiah The Gamer
Isaiah The Gamer Il y a 2 jours
Crab people, crab people, taste like crab, act like people, crab people, crab people
Elijah F
Elijah F Il y a 2 jours
I wanna be a crab next
Floopdoodle Il y a 2 jours
All these different types of crabs reminds me of some sea Game of Thrones
Garan Salandy
Garan Salandy Il y a 2 jours
Danku-Kun Il y a 2 jours
There's so much good humor in the comments of PBS videos. why?
Jamie Azalea
Jamie Azalea Il y a 2 jours
Why is this so cute and comforting...
gelatinguy Il y a 2 jours
This man's forearms about to evolve into crabs.
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