Want a Whole New Body? Ask This Flatworm How | Deep Look

[@gabrielaquiros1966]

Hi Deep Look fans! I produced this episode. Here are the answers to a few questions you have asked. Nelson Hall, a doctoral student at Stanford University who studies planarians provided me with the answers below. Thanks for watching! -Gabriela 1- What would happen if a planarian were cut lengthwise, rather than from side to side, as we show in the video? It would take a little longer to regenerate, but it would regenerate all the same. 2- How do planarians reproduce? Some reproduce sexually, by mating and laying eggs. Others reproduce asexually, by breaking off a piece of their body from which a new planarian grows. 3- How do planarians die? Hall says they can die from infection or starvation. “If you really want to kill a worm,” he says, “you can dehydrate it, keep it over 30 degrees Celsius, freeze it, or use toxic chemicals. I’m sure you could get creative with how to kill planarians, but cutting (within reason) and aging will not do it.” 4- If you put a planarian in a blender, would each bit regenerate? “Unfortunately, probably not,” Hall says. “A planarian in a blender will just produce very dead worm mush.” 5- What is the smallest amount of planarian that can regenerate? “If the wound can close and if the remaining fragment has at least one stem cell,” says Hall, then it can grow a whole new planarian. 6- Are planarians immortal? If none of the situations described above were to happen, then yes, a planarian could be immortal. For asexual planarians - the ones that reproduce by breaking off a piece of their bodies and growing a new planarian - there’s no evidence that they age, Hall says. For planarians that reproduce sexually, there may be a slight decline in fertility with age.

[@greimalkin]

This is a great video, thank you!

[@jensonnguyen2169]

Good video!!!!! I need softer skin on my leg

[@itzpanda2031]

Wow...

[@francischeefilms]

Great production of this biological marvel.

[@yaku6523]

Biettaitihon

[@egg2799]

Planarian: I'm so lonely... Scientist: *chops planarian in half* Planarian: ARGH oh hey....

[@egg2799]

@ioan kolev lol for the sake of the joke just roll with it 😂

[@adityarajasekar5138]

ioan kolev it’s a joke.

[@adityarajasekar5138]

ioan kolev Lol u will never understand memes or jokes.

[@caseyx3rae]

As well as the other side of the African American you are not going to be on the way to the hospital

[@4r4chn1da33]

ioan kolev it was a joke

[@goose9790]

"It doesn't even hurt" Flatworm: *screams in high pitch*

[@_-.--.-..-.-_]

😂😂😂

[@JebbyisJeb]

It’s So high you can’t hear it

[@queenmisheel4046]

😆

[@justa_twinkie]

@@JebbyisJeb hahahah lol

[@Sskull3031]

I like ya cut g

[@jimmypgp1]

Their faces are just like: • •

[@philtheanimatorriceyass3619]

Yep

[@thenorthstarsamurai]

accurate

[@1.4142]

< > ◑ ◐

[@NurseKilljoy-h5m]

👄

[@frederick6096]

They’re just so cute

[@smae6677]

Imagine being born like this. Hey mom, how was I born? Mom: oh I cut off my leg and you grew

[@QuangGoodman]

Good one

[@Theanimalfarm077]

yEaH lOl

[@elabellfrancis]

lol yes

[@humaabdul1711]

omgood I am dead, Good one sir/ma'am

[@birb976]

Good joke

[@lexdumas8486]

Planarian: I'm alone Scientist: I got you fam Planarian: Nice

[@almavillaglba2069]

Hahaha super funneh

[@lolfaceMay]

Lol ⊙□⊙

[@bongster849]

Nice

[@xsthyr]

**chops him up**

[@H05H1_STAR]

Planarian clones: Nice

[@Toastmaster_5000]

I suppose you could consider the guy who cut it up a disciplanarian

[@KQEDDeepLook]

Comment of the day

[@ethanotoroculus1060]

Oh my god, only 4 likes on a loved comment (counting myself.) What kind of image does that send regarding puns on this channel?

[@sfall616]

Ethanotor Oculus just don't let it become as bad as sci-show.

[@alexwang982]

Bwahahahaha!

[@ethanotoroculus1060]

+Pi Oh, you have a very charming laugh sir.

[@dadp]

Me: *Kills planarian* Planarian: *Bish I'm 5 of them now.*

[@divinefaction9591]

XD

[@ninabean4857]

😆😆😆

[@Yawnford]

Me: *Bish I'm Fabulous*

[@dadp]

@SaltySybill uhh there's a slight problem.

[@belledelphine9692]

SaltySybill r/wooosh my dude

[@brambleberry95]

My boyfriend’s mum is a scientist working on flatworm research. She showed me her little tub of flatworms she uses to research & it’s so fascinating

[@heinrichharkonen2084]

Where?

[@brambleberry95]

@@heinrichharkonen2084 where what?

[@IAmGonnaPutSomeDirtInYourEye1]

​@@brambleberry95why is your mom dating a planerian?

[@brambleberry95]

@@IAmGonnaPutSomeDirtInYourEye1 pardon?

[@IAmGonnaPutSomeDirtInYourEye1]

@@brambleberry95 i am a planeterian

[@mrtails8010]

"I promise, everything's gonna be OK." *cuts into 4 pieces*

[@OKOK-kl2tz]

And i promise when you hear taht You comment this right? Dont lie god see you

[@emanuelskvorc2313]

It was ok

[@link12click]

🍽

[@pikachu-qw3jx]

i thought she killed that poor worm but she dupes them into more thank god

[@pendadenda1331]

“ :) “

[@hcildwold1751]

Planarian's reason for developing this ability -Mom? I don't have friends at school:( -Huhh.. hold on let me get a knife.

[@teesiewping304]

Hope that it die

[@kdvr766]

Well that escalated quickly

[@LuisSierra42]

that's cruel

[@SomeoneYouDontKnowOfficial]

For a second I thought this was a horrible joke about self harm but then I realized it is a joke on creating a whole new person and that is hilarious, wholesome and a lot better than originally anticipated.

[@hcildwold1751]

@@SomeoneYouDontKnowOfficial, Do I know you?

[@ConcealedWeaponry]

"Planarians are the ONLY animals that can regrow a head, so why can't we?" *Because we don't want a copy of ourselves running around.*

[@sp33dw33d_]

To show you the power of stem cells. I SAWED THIS WORM IN HALF!!

[@Morph45]

@@sp33dw33d_ copied

[@ipiinsih3655]

You don't. I want to lay around doing nothing while my copy does all the hard work and giving me the credit ;)

[@ConcealedWeaponry]

That's if you're in school.

[@NotReturningToThisAcc]

I want a copy of my own that way I can play with it and it will help me do my homework

[@fluufymon]

If we as humans kept those cells when we grow older, wouldnt that mean that if an arm got cut off, not only would the arm grow back, but the arm that was cut off would grow a new body?

[@tauhedushsalam3877]

Yep

[@A.Singularity]

Wait are you the finger that i cut off when i was 4? Me 2:Yes i am, and i have come to get my revenge, your head, hand it over.

[@Drip-Soup373]

the arm wouldn't have enough energy to grow a body tho

[@Drip-Soup373]

and the human body is too complex for it to regrow without dying I guess

[@user-10021]

It would make sense, when there's enough stem cells concentrated in that arm it should work. But I doubt it'd be nearly enough to replicate all the complex tirrues, organs, etc of the body. The concentration in that arm would have to extreme - most likely impossible to achieve. Unless these cells get reproduced at a fast rate without needing to ingest energy it'd run dry pretty fast. I guess that's probably also the reason why stem cell treatments on humans are limited in what you can do with it

[@Dinoman972]

Murderer: *slashes planarian in half* Planarian: Oh, no. Now I have a brother...

[@don8799]

Dino

[@JPEspulgar]

And another cut! And he say's "dada"

[@peenrag6_z926]

Son* xD

[@juno7424]

Or a child? Like mitosis produces daughter cells

[@unparalleledinnocence]

a HALF-brother! Eheheheh....bad pun

[@goldboss7929]

Me: im bored *cuts off my own hand and waits overnight* Other me: hey Me: hey

[@FireIsTheCIeanser]

Love your comment lol

[@albinareola4182]

Sound like patrick star BUT THAT IS REALLY FUNNY THO

[@tmutswiri]

Give em a high five

[@isaacmoffit5426]

It takes 3 weeks, not a single night.

[@Rootbeer120]

Other you“Heeyy” You “heeyy” Also you “what?”

[@nahil0]

TO SHOW YOU THE POWER OF STEM CELLS I SAWED THIS PLANARIA IN HALF

[@mystery8093]

THATS A LOT OF REGENERATION

[@Death_Gremlin]

Oh my god XD

[@GhostworxYT]

This is the kind of comments i want to see when i come down here

[@pykeplayer4007]

HOW ABOUT A LITTLE MORE?!?! *cuts into 4*

[@fossilgaming65]

*m i t o s i s*

[@infinityzer054]

Honestly these things have the oldest eye design. In the animal kingdom “Lisa Simpson was afraid to cut an earthworm....well yeah the earthworm can pull a flatworm, but only once”

[@JcDaFloof]

Planarian: - gets chopped up - 3 weeks later Planarian #1: Ayyy my bruddas! All other Planarians: Ayyyy!

[@Matty80822]

that could be in a pixar movie

[@guesswho-f3w]

😂 I can imagine that

[@pendadenda1331]

How to give birth as a Planarian: 1. Cut off your legs or arms 2. Wait 3. Bruddas!

[@miair1126]

Am I the only one thinks that their faces look cute?

[@roboticeggs]

Nope!!

[@Sirgrenous]

No

[@ximecreature]

Adorable, you mean !

[@barbarazhang1104]

no

[@metamorphony8834]

They are adorable

[@ymirs4400]

They're sooo adorable ^^ btw, their "eyes" are really just 2 clusters of cells that are sensitive to light, so they're much more basic than regular eyes

[@patootie3529]

I think they're pretty gross. I touched one before. Never wanna touch again.

[@justatroll_8664]

@@patootie3529 Even if they feel gross, they're harmless and because of that, they're pretty darn cute.

[@huongnguyenjss]

Well everyone has an opinion

[@striveforsuccessstudysmart3509]

@@justatroll_8664 personally having it inside you would be fum...

[@striveforsuccessstudysmart3509]

@@huongnguyenjss wrong opinion*

[@iwillsueminyoongibecausehe8825]

“don’t worry it won’t hurt” worm be like Oh no! 3 weeks later anyways

[@DragonSlayerknowsdawae]

Thanos: *Goes for the head* Flatworm: I'm about to end this purple big-chin's whole career

[@CJCroen1393]

Thanos: (disintegrates the flatworms) Flatworm dust: (grows into a bunch of flatworms)

[@Project_VideoGame]

Thanos: *disintegrates the flat worms again* Flatworm dust: *regenerates x2*

[@fallenbrocolli5143]

@@Project_VideoGame Thanos back then: Its resources are finite. Thanos now: *Impossible*

[@Nephelis]

@@fallenbrocolli5143 Let's make a farm of flatworms and use them as resources.

[@smickothesmickest]

Thanos: knife stone. Flatworm: I'm ok Thanos: snap. Flatworm with an S: I'm ok Thanos: anime stone. JJBA ORA ORA ONE PUNCH MAN SERIOUS PUNCH FAIRY TAIL FIRE DRAGON ROAR DRAGON BALL Z KAMEHAMEHA

[@UnrestrictedQ3]

The little eyes are soo cute!

[@pooooopppyyyyfarttt]

Unicfruit I know right!

[@jessicamullins5006]

Worms are usually gross, but then I saw these had tiny eyes and I thought they were cute too. 🤣

[@imobilechan]

It way too kawaii

[@Lyre206]

Unicfruit ikr!

[@danielle9952]

those actually aren’t eyes

[@kevinliu1169]

To show you the power of stem cells I SAWED THIS WORM IN HALF

[@elijahheyrosa5398]

No, FLEX CELLS

[@junielthegamer2845]

WOW! THAT'S A LOT OF DAMAGE!!!

[@kiwicat2345]

Kevin Liu 28 stab wounds

[@whendaybreaks8836]

*I'll TAKE YOUR ENTIRE STOCK*

[@mikolaj-lt8tv]

plus, they even work U N D E R W A T E R !

[@joeblaster8770]

2:36 hey guys remember when we were one thing and now we're four?

[@chueandjulia]

Imma name one of these, “Ditto.” He’ll be the best.

[@ItsJustKaya]

I take the shiny one. Or the most akward one, is fine too

[@amytsab]

I'll have the smallest one thank you very much.

[@ra_alf9467]

Oh, yeah. My youngest brother name 😂

[@eVill420]

tomorrow he'll be the second best too

[@striveforsuccessstudysmart3509]

He can smash any creature alive....

[@Weredawg]

So Wolverine and Deadpool are just fancy anthropomorphic planarians then

[@tasosjw]

Greg Shovlin Dragonball's Cell/ Shell too

[@elliottphylow4378]

@@tasosjw *Cell

[@helpme5785]

What do you even call a furry that's a planarian? A wormie? Plarry?

[@lcdream4213]

You know they can divide because they dont have a brain and they have stem cells

[@ashysparkles5691]

that’s one way to make a friend. not an imaginary one.

[@ΣωτήρηςΠαπαγιάννης-θ3ρ]

Army

[@lifeisalemon942]

I actually did this experiment when I was a kid (around 6 I think). There were these thin black worms that we saw when it rained, and my mom told me that if I cut one of them into half they'd become 2 separate worms. So naturally, the next time it rained I went to the balcony, caught one and put it in a bowl to cut it into half. It actually worked. When I cut it, the 2 pieces just became 2 different worms.

[@aligamiles]

That's cool

[@tristanjones1987]

Deadpool as a worm

[@coolmar4000]

I thought that too!

[@besttuberz7014]

Except he doesn't multiply haha

[@flamersshowsandmore3864]

so do we just give someone the powers of that

[@ianmahawan141]

Tomie as a worm

[@ShiWalfyShaniacs]

I thought that early

[@Shwaznut]

Alabama palerian: Sure is boring around here Being an only child. *Gets cut in half* Alabama palerian: Heyyyy there sexy

[@TheMADC999]

Sweet home...

[@hollow8575]

ALABAMA

[@laurah-i9695]

What’s this palerian you speak of? You must be from Alabama 🥴🥴🥴 they’re called planarians

[@patootie3529]

Planarian

[@heidiwebster3867]

Plamerien: Dies God: Wait, that's illegal

[@anormalfangirl7408]

Kids on youtube be like

[@mussellpixelberg8693]

@@anormalfangirl7408 bruh haha

[@kursk_kuku141]

Uuummm? Hydra in a nutshell. Cut off one head two more bodies appear. Cut off four bodies... eight more appear?!

[@mariaevergara5370]

Uwot

[@Paxychi]

Just imagine being a Plamerien wanting to die but you cant

[@LadyENTP-T-fc2ui]

I used to view these videos when I was younger, I didn't realize I was learning bits of information about stuff like the kingdom animalia, stem cells, and stuff. Thanks for helping me with biology

[@KQEDDeepLook]

Awesome! This comment makes our day.

[@fixeler2061]

It's going to be okay. Seriously. I promise. It doesn't even hurt. Well that definitely one of the most reassuring words I've heard-

[@soushiii]

Planarian: bruh i need a gf Scientist: *cuts it in half* Planarian: a scientist is a planarian's best friend.

[@ItsJustKaya]

If u think about it, thats basically adam and eve. Wait thats means.... Lizzardmen is right and flatearth false cuz lizzardmens life in/under earth... omg where is my Dr.title

[@slozor549]

_Mum I have a gf._ _Son, that's a part of me._ *_O H.._*

[@kratz240]

*O H*

[@mrmaxwell346]

Well this just got awkward

[@ayetiwithinternetacces875]

*BIG OoF*

[@aceshadowins1310]

slozor hmmm milfs!

[@TeshikuKarin]

O.o

[@NINJACULB]

Imagine cutting your finger in 3023 and grows up into a identical clone of you

[@comradedoggo6307]

Me: I want a brother Mom: *cuts of finger*

[@alphaamoeba]

The problem is your new little brother is litteraly a little brother

[@rancidrancidrancid]

AlphaAmoeba 😂

[@dogsareawesome9197]

If someone ruins AlphaAmoeba's joke by correcting him ima kill that person

[@ri1114]

@@alphaamoeba What.

[@alphaamoeba]

I dont even remember what the joke was, maybe it meant the little brother was literally tiny?

[@전혜준-p4z]

0:46 congrats! You got a shiny planarian!!!!(literally)

[@candilove0818]

lol I mean u aren't wrong

[@hellszhells]

Planarian: tis but a scratch Me: your whole body's off Planarian: I've had worse

[@striveforsuccessstudysmart3509]

my nan

[@skunkyaroma5662]

I enjoy this Monty python reference

[@mangle18423]

yesss

[@anothernobody5396]

2:06 just looks amazing NOT THE POOPING THE FACE ITS MAKING

[@annesanchez9866]

Don't worry. It's going to be okay. CUT Seriously. CUT I promise. CUT It doesn't even hurt. Meanwhile... Me: Mom, it actually hurts.

[@kong5690]

I’m screaming!!!!!!😱😱😱

[@murakigal65]

This is my exspretion 😱😱😱

[@veramae4098]

Fun fact: Very young babies used to be operated on without anesthetics or pain killers because it was "believed" their nervous systems weren't developed enough to feel pain. Then surgeons found out differently. Horror. A fact without numbers is just an opinion.

[@getcaughtin4klol752]

@@veramae4098 ok

[@hilariousskullnamedcatzo647]

It hurts me and everyone seeing that

[@444lilou5]

"it started regrowing a tube called the pharynx, which is how things go in and out " lenny

[@lunaria45]

( ͡° ͜ʖ ͡°)

[@areskprotonyt1468]

Eat and poop at the same hole

[@incredibnlyreal]

*( ͡° ͜ʖ ͡°)*

[@danstiver9135]

If humans could do this the French Revolution would end up doubling the population of France!

[@Blueshirt38]

Only if the entire population of France was guillotined.

[@aadarsh_1303x]

And what about the holocaust

[@emilemil1]

Regenerating the brain after having it chopped off would have some complications for humans, since even if you'd regenerate an adult brain, you'd not have any of your memories and knowledge. You'd basically become an adult baby.

[@terty6529]

Mr Shambleface iI'm

[@ScienceDiscoverer]

@@emilemil1 Being adult baby is better than being dead!

[@Liboo52]

I love the planarian leitmotif in this video, it fits them perfectly!

[@itzyaboijaidenyeet6416]

To be honest they kinda look cute

[@ertanfranzl788]

I agree

[@itzyaboijaidenyeet6416]

Thank you guys so much this is my first time getting likes on my comments

[@zeecaptainz]

Indeed, all chopped and that

[@keathlyeguia9572]

Yeah, theyre cute

[@xserynx2446]

Well honestly inside the microscope they yeah..Cute but with your eyes they are worm...Get it?

[@davidprodigy5833]

And the flatworm says " just because I can regrow Parts doesn't mean that blade doesn't hurt!"

[@theredeft5319]

David Prodigy It’s likely they numbed it first. We did a similar experiment in high school with hydras and we numbed the slide first.

[@deboratasso8399]

Not all animals experience pain, you need something to send chemical signals and a whole system to identify and respond to it as pain as you know it. These worms don’t respond to cuts, they know they were cut and their body reacts to it with healing processes, but there’s no pain. Same goes for many other living beings such as microorganisms, fungus, jellyfishes, plants and so on. Pain is not an universal thing.

[@dimetrodon2250]

Why would a creature that isn’t harmed by being cut evolve the ability to feel pain?

[@davidprodigy5833]

@@deboratasso8399 I really hope that's true with the little guy here. I'm just picturing his little mouth trying to open and say how that hurt!

[@davidprodigy5833]

@@theredeft5319 there's absolutely no way they know I'm that guy. they would just be taking a wild guess on what his drug tolerances are.

[@mako-roni8298]

Me looking very close: aaaa so cute~ Me looks away: **intense screaming**

[@JustinRed624]

I promise **Slashes** *i t d o e s n 't e v e n h u r t* **CUT**

[@jtktomb8598]

tis but a scratch !

[@starmax1000]

*body parts wiggling away

[@vbgvbg1133]

Where did Justin Y. Go, Justin R.?

[@JustinRed624]

Go to any other video and he will be there

[@adodido]

is that you, Ditto ?

[@retanizer8263]

Dude you just remind me of my childhood.

[@nnounnou9530]

Friend:"AGGHHH A SLUG" Me:"I'LL GET THE KNIFE" Friend:"Okay!" Me:*starts cutting it* friend:"YES! ITS DEAD *_flashback_* *watching this* Me:"oh wai-"

[@patootie3529]

*insert sarcastic laugh here* Also, you don't need quotation marks after using :

[@deadacc3881]

@@patootie3529 *_yes you can_*

[@patootie3529]

@@deadacc3881 u can, but it's wrong. U don't need em

[@huongnguyenjss]

Rich Patootie no offense but this isn’t really a test or anything so it doesn’t matter. It’s okay to point it out. No offense

[@angelusioritan1763]

Why would you kill a slug?

[@ennardthefuntimepuppet6456]

Now you have infinite glitch of worms

[@SomeoneYouDontKnowOfficial]

We were about to do this in my one of my science classes so this is reassuring, especially if the "doesn't even hurt" part is true. It's fascinating how they pull themselves apart in order to reproduce so it's just like we are helping them speed up the process.

[@kineticcode5806]

Shut up nerd

[@kamikaze6198]

Oooohhhohohohoooo If i get one of these worm Im gonna torture the shat out of them Due to fact that they don't mind at all

[@CertifiedProcrastinator.]

I will get one, chop it into multiple pieces, and BOOM! Planarian army.

[@hcildwold1751]

I think the 4 Planarian that were cut came here to dislike the video!

[@tangbein]

Hcildwold And liking your comment.

[@interopsty]

A few got cut now there’s 7

[@al-hn7fc]

It still says 4 for me, I guess they changed their mind..

[@intereality]

Fer real, we're at 12 planaria. Is this where internet trolls come from?

[@alexwang982]

They got cut again.

[@zack88005]

How do planarians maintain nutrition needs while regenerating?

[@baikia777]

By breaking down their remaining cells just like any vertebrates using fat and muscle tissue as energy reserves when they don't eat. And the first thing they grow is their feeding organ so they can eat quickly.

[@96Champ994]

They said it in the video. They basically firstly regrow a tube that is for feeding and pooping , befor anything else

[@96Champ994]

(2:10)

[@IgneousGorilla]

On a side note, these dudes breathe by diffusion, through the skin. So, once they regrow their digestive system using the energy reserves that they must have in order to do so, they are good to go.

[@96Champ994]

@@IgneousGorilla thanks for the additional fact. They are rather big for them to breath with diffusion. I always thought microscopic organisms only could do that. Intresting.

[@tyshawnstubbs9315]

*This is "Flat" out amazing. I don't think I can "Worm" my way out of that cutting session*

[@kitana_kennedy]

They are so cute, like a mini sluggy. 😄

[@ronakshah5352]

Yes These are found in my bathroom

[@Motifs_s]

Oo Necro posting

[@Zeeek112]

Oh there so cute. Huney they nassssstyyyyyy.

[@huhwhatsweezer]

I agree

[@Zeeek112]

@@huhwhatsweezer you agree with me?

[@priyahosna3929]

Wow they're so cute.Especially their eyes.

[@Gatorsdudes]

• •

[@missblob5922]

• •

[@sudarigunasekera7353]

. .

[@MovedchanneIs]

𓁹 𓁹

[@horiginsfs7561]

@@MovedchanneIs aaa-

[@lalanadal8325]

Flatworm:How dare you cut my body, it took so long to make it

[@corgikardashianwest9834]

I love this so much. This is such a cute video and every time I watch this it just makes me so happy!

[@noompunk]

This is probably the first time ever in my life that I see a planarian worm from an angle that is not top-down view.

[@syaidi9584]

I can finally have a brother......

[@romamo7018]

Rusyaidi Romzie you don’t wanna brother😂

[@juancarlosortegagarcia2609]

A twin!

[@manikhalder7166]

You are not a Planaria!

[@shsheaks]

0:41 huh what's th- OMG WHAT ARE YOU DOING

[@theultimatereductionist7592]

3:34 Actually, even THIS is amazing: regrowing a human fingertip.

[@yipyip4992]

Science has found how it can be done in humans. Watch Michael Levin on TEd for how science has figure out how to regrow just about any body part on any organism

[@deano43]

Need an army of these guys? Put one in a blender.😀

[@ilex161]

That's evil o.o.

[@paintandbuddybeepingbudgie5345]

Oh no

[@justatroll_8664]

Did you not read the pinned comment? The producer said they probably wouldn't regenerate and will just produce "very dead worm mush".

[@aidsvlekje8566]

JustATroll _ it’s a Joke...

[@isaacmoffit5426]

If you read the pinned comment, this probably wouldn't work. Creative tho.

[@darkhoodchief]

I thought they just reattach but no.

[@sbe5473]

You're not alone

[@iridocyclitisxembzy8873]

Wait so you can just cut these up and when they grow back cut those up and have infinite planarians

[@skunkyaroma5662]

Yeah most creatures just keep reproducing to no end. That's why we have lasted millions of years

[@skunkyaroma5662]

That's just another way of reproducing and it's not any faster than other bugs laying eggs and then taking like 3 weeks to hatch.

[@dibs6462]

so we can put mini blades and chop 1 worm to 20?

[@Nandinibali13]

No. Slurrying it leads to it's death.

[@FatherOfET]

I loved how you used the beeping noise from the iron giant when he gets hit by the train, it made me happy 😆

[@FatherOfET]

No, it was the sound from the iron giant, I’d don’t mean the actual train.

[@vanichu2401]

0:40 Me: NOOOO!!!!! Video: **Cuts in half** Me: SHITsuke!!! Planarian: Ow!!!! Planarian: Oh hey mate 😊 Me: *The fuke?*

[@jasminexallen7461]

Gibraltar no u.

[@annesanchez9866]

@@jasminexallen7461 r/wooosh

[@realyoungneil]

did i lose some braincells? maybe, maybe not?

[@yanlingliew3479]

So that's how slither.io been created!

[@pribarros1681]

Good Joke

[@antmtony]

Her: Well, it all comes down to powerful cells Me: Mitochondria

[@multistan1179]

Mom: " Hunny, Should we make our 2nd Baby? " Dad: " Alright " *CUTS LEG* Dad: " He looks just like you "

[@marunmeister1718]

Human: *chops planaria into 4 pieces.* Planaria 1 : puny human. Planaria 2 : what you do is futile. Planaria 3 : it is us. Planaria 4 : the Hive Mind.

[@kimolemoe877]

You can't gilet

[@geopornicus3944]

FOR THE HIVE MIND! SCREEEEEEEEEE!!!

[@alabok06]

terraria referrence ???/

[@carterhicks7441]

You know theres a secret stem cell lab somewhere and some dude is growing like 10 arms on himself trying to be machoke.

[@cessationreinstitution]

itsthosehour s maybe some guy is building his own army

[@el_presidente]

@@cessationreinstitution But.. Who is the real one o.O

[@Yimyimyimyim277]

we could only hope to be so lucky

[@deenanthekemoni9821]

Probably several of em, not just one haha. Animal hybrids too. Just imagine what they got in their umbrella-corp type bunkers.

[@meghalok]

Machoke has two arms.

[@SepsTArdJohn212]

"Cut off one head, two more shall take its place" 🐙

[@tegamingother]

More like cut it vertically and two new heads will grow back. Or slice the head off and two more individual bodies will appear in less than a month.

[@crepsecularcorvus1674]

Ah, a man of change. 🐙

[@SuperFlameGuy60]

Agents of shield aye

[@helena6718]

the missing finger tip really took me to another dimension

[@graphite2786]

Thanks for turning, what I've been reading in biology text books for years, into a real life example ! I was hoping that you would show the procedure where the planarian head is sliced a dozen times and eventually 12 heads grow back : Hydra planarian! ( Though I can understand some people getting upset about it)

[@Cup_of_tea424]

woahhhhh that can happen !!!

[@nijrajgelani1113]

Whoever thought flatworms could be so cute.

[@albinareola4182]

DEADPOOL: YEAH I CAN REGENERATE MY BODY QUICKLY Planerian : do you have other talents

[@theangelorock1129]

DEADPOOL: WENT I GOT MY HAND CUT OF I JUST REGENERATE ANERTHER ONE

[@Unknown-bt2yr]

@@theangelorock1129 Planarian: That's cool but when I cut my head off, not only can I regenerate a head from my body but my head which was cut can regenerate a whole new body.

[@theangelorock1129]

@@Unknown-bt2yr Deadpool: WENT I GOT BURN I JUST REGENERATE

[@wisewigga7129]

@@theangelorock1129 shut up

[@theangelorock1129]

@@wisewigga7129 WHYY DONT YOUUUU SHUT UP?

[@burnt_breat6126]

Oml that cut to the head was so satisfying, especially the sound

[@lucillemeringuez2206]

True

[@diartsyone7052]

They're strangely cute..

[@littlegoatgt]

so incredible. If this worm had gone extinct we would never have known of this feature. Makes me wonder what other amazing features previous long gone life forms had.

[@crazyman7504]

It exists in starfish too

[@rea8585]

The coolest story ever: my friend (60 years old man) got his big toe amputated. Two years later his two grew again. It looks a bit weird (the toe nail has hairs sticking out of it) but who cares! His toe regrew! The doctor was really surprised and couldn't explain it. Still don't know why it happened, but my friend is happy :)

[@Basementjacks]

But how?! 🤤🤤 maybe he isn't from this planet

[@rubscratch98]

If so please go to a doctor and maybe we can find what made this happen.if your friend has a mutation which would allow the regrowth of a toe he might hold the key to stem cell treatment Humans have been longing for.

[@nightbane2889]

Neat! Maybe he got some weird combo of gene that gave him extra stem cells stores or something! Would be neat

[@kaydenheisenberg6023]

Quick Fix - Thought Provoking Videos dang it’s like the 26th gene in human DNA which has the capability to regrow things like your toe or hand or foot ,lel dude u should get ur friend to some kind of facility to do research:)))

[@Yimyimyimyim277]

He's a planarian

[@evelynnnyynyn132]

Imagine trying to kill them. *_They do be indestructible_* But like they’re cute af-

[@ananz9233]

**Light bulb appears** I WANT TO START A FLAT WORM FARM!

[@angstygyroscope7979]

*Moths wants to know your location*

[@combrider]

Ok. And what next? What exactly you would do with them, aside from cutting? 🤔

[@someboi4903]

comb rider Sell them

[@hexmaniacgabby5160]

@@combrider they could be cool to look at.

[@sc-fx7cy]

BUILD AN ARMY

[@TheTacroach72]

*cuts off leg* Next morning... other me: huh hello. Me: oh wow hello mini me

[@danangsaputra4956]

That gonna be the most annoying nightmare

[@ddenozor]

when someone begins to cut our arm it hurts because our body is trying to tell us something bad is happening. if we were able to grow it back in 13 days like these fellas,there wouldnt be any need to feel the pain

[@MagicalFruitBasket]

Not to mention you could potentially bleed out and die when an arm is cut off. And even if you don't, there's a high risk of infection.

[@YskarAlbumLuna]

I don't think we wouldn't need to feel any pain, but definitelly we wouldn't need to feel THAT much pain of an cut arm.

[@aylinmedina6443]

Planarium be doing the spiderman meme point all at each other, Im you, you are me and i am them

[@justleeguy9195]

*TiS bUt A sCrAtCh* -Monty Python

[@crepsecularcorvus1674]

(Black Knight, sir.)

[@gabi131415]

I really appreciate all the hard work that goes in to make these videos. They really are interesting!

[@Lordskelecat]

Oh I wasn’t expecting a slasher film today

[@Nparalelo]

It's halloween month, dude (?)

[@Lordskelecat]

Nike_Aguaraguazu i was joking

[@meph1570]

Agent Planarismith : "me, me, me..." Agent Smithanarian : "me too..."

[@ericwood4501]

Just discovered your videos this fall semester. They're tremendous and I use them in my intro evo/eco/organismal class at cal state la. Students love the videos, and you have an example for so many things that we cover! Look forward to your future videos!

[@KQEDDeepLook]

Thanks Eric!

[@Artauli]

Wait. Did their soul get chop too?

[@shoolepak]

Experiments like this just show that there just isn't a thing such as soul.

[@Georgeg15]

Artauli Elizabeth what do you mean by soul ?

[@Georgeg15]

Thelaretus oh yeah of course . I’d love to see your evidence to back that up .

[@jhonx5323]

There is nothing such a soul, its memes that we passed on to every generation

[@Buderus69]

There is only space time matrix coordinates which stay the same and save the abstract Version of your combination. A twin has the exact same combination of information, but the abstract is saved on a different matrix position, like on a piece of of an universal RAM, this would be your "soul" if you want to call it that.

[@Thomalski]

Reminds me of that one Spongebob episode where Patricks Arm regrows a new Patrick!

[@CyroKinesis]

"It's gonna be OK. " Planarian: REEEEEEEEEEEEE THAT HURT

[@Dr.Aryann]

How small do they need to be sliced to be able to grow back into an individual? Surely there must be a limit to it? Like.. could they be shredded and form a whole bunch of new ones? I know it’s kind of sick but I was really curious about it 🤔😅

[@accelerator1666]

Yeah im wondering if this is like perfect Cell from dbz where if theres one cell alive, it just regens.

[@lifelinerodz7703]

or what if we slice it vertically, how would it regenarate?

[@abluejayc3503]

as many as the totipotent cells and some supporting tissues maybe.

[@johncao6516]

I think it could grow 2 heads if you cut it vertically, but not all the way through. Don't quote me on this I could be totally wrong.

[@gsahgee]

I think I heard somewhere that you can slice them horizontally into 16 equal pieces before they stop growing back.

[@snowvine]

Yyyaaaaaaaasssssss. New video!!

[@yumnizabir]

If human have this ability i would have 5 different version of myself right now

[@amanaaks11]

Yeah but imagine how hard it would be to cut yourself apart

[@parveenbanu6059]

The flatworm when cut:Kage bunshin no jutsu