Testing if Sharks Can Smell a Drop of Blood
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- Опубліковано 27 лип 2019
- Scientific proof Pixar sits on a throne of lies.
Also, thanks to Discovery for putting my life in danger.
Links for the build instructions: www.dropbox.com/s/iqn14ydzqaf...
Sean's Hodgin's channel who did most of the heavy lifting for making the boxes: / @seanhodgins
Pump animation made by the talented Jared Owens:
/ jaredowen
Connor was the beast feeding the sharks underwater. He has some amazing footage for licensing and his own UA-cam channel.
YT: / @sharkmanconnor1043
email: sharkmanconnor@gmail.com
Insta: @sharkmanconnor
Follow my marine biologist friend Luke Tipple on Instagram- / luketipple
More info that was promised-
What is likely happening is that the sharks can smell the blood but it's just not in a quantity that is interesting to them especially since they don't love human blood that much (btw, I spoke with a marine biologist and mammal blood is all the same from a chemical marker stand point so cow blood is a suitable substitute for human blood). If I did the experiment again, I would want to test human blood vs. fish blood.
This is the most definitive study done to date in a control lab environment on what is least and most interesting to them: The Biology of Sharks and Rays Peter A. Klimley and Steven Oerding; ISBN-13: 9780226442495. Particularly pages 134-140. Figure 6.7; Table 6.2
Thanks to these folks for providing some of the music in the video:
Ponder - / @pondermusic
Laura Shigihara - @supershigi
Andrew Applepie - / andrewapplepie
Blue Wednesday - / bluewednesday
MERCH-
They are soft- teespring.com/stores/markrober
Summary: I've always wanted to test if sharks can really smell a single drop of blood in the water from 1 mile away. So I went to the Bahamas in shark infested waters and set up an experiment to get to the bottom of things.
MERCH-
They are soft- teespring.com/stores/markrober
PLEASE CONSIDER SUBSCRIBING: tinyurl.com/MarkRober-Sub
****************************************
I make videos like this once a month all year long while supplies last:
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FACEBOOK: / markroberyoutube
TWITTER: #!/MarkRober
INSTAGRAM: / markrober - Наука та технологія
My class can smell and sense a pack of gum nearly a mile away...
Facts. Tbh, they can smell all candy, snacks, and food. From miles away
Hahaha
@boxersnatcher onggg I hate it
“cAn i hAvE sOmE?” *ends up with nothing left*
It's easy
Just simply refu-
Human: “lets see if sharks can smell blood”
Sharks: “lets not please ✋🏾, we’re trying to be professional for the camera here “
Lmaaaooo
hahahaha
Awesome comment
Society
Lol🤣🤣
Just found meme ''why women live longer than men:
And searched it on yt
Mee too😂
Kkkkk
Same
EU TAMBÉM KKKKK
Same😂
Other possible extraneous variables:
-these sharks learned not to bother with these boards after the first experiment
-other shark types react differently
-these sharks had just eaten
-no boat to distract may put a higher interest in a lone bleeding person at sea
أحسنت
- قد يكون لأسماك القرش أجهزة لاستشعار حركة الأجسام النازفة وليس حاسة شم فقط، لذلك لم تكترث برائحة الدم وحدة دون وجود جسم يتحرك .
Y científicamente no les interesa mucho la carne humana, prefieren de cualquier otro animal, el miedo a los tiburones es pura publicidad para vender películas y puro marketplace al igual que los dinosaurios, cuando solo hay sus huesos y no evidencia de como no los demuestran.
0:56 hey
Guy: **swims with possibly 50 sharks around**
Me: **feel a rock touch my feet and instantly panic**
What is the name of music bro
😂
SAMEEEEEEEEEE 😣
Once in the ocean seaweed wrapped around my ankle and I began screaming like a maniac. My dad swam out and saved me LOL
Buttons F SSAMMNDEEE
Shark 1:Can we eat him
Shark 2:Shut up boy!who does it on camera
That's why they where trying to destroy the camera.
🤣🤣
lol you made my day
Shark.1 did they just put pee in?
Shark.2 I hope not, or they are weirdo's
X3 funny boi~!
The spear footage was awesome 👌. Great video, I'm subbing.
I admired the clarity of seawater. Absolutely, stunning !!! Also, video quality and quality smelling production as well.
Sharks: *Start eating him*
Him: It’s just a social experiment!
*him*
His *nAmE iS mArK*
*ive been laughing at this comment for 3 minutes straight*
*lets keep going with the bold letters XD*
*Faze _deylyn good idea*
-Breaks chain-
This is what school expects us to do for our science projects.
BillyJohn EltonJoel And what the quiet kid actually does
Tru lol
Oh really
With pee?
😹...
Anyone from India
Anyone from Bairia, Ballia, Uttar Pradesh India?
Me
Anybody from Assam??
I am from Rajasthan guys and I am a certified scuba diver. Any of you are certified?
Yes
AMAZING!! I’m not sure what type of studies there are but, it turns my gears ⚙️ ❤
THANK YOU!!
Plot twist:
Sharks are paid actors
Thanos mp underrated comment 😂😂
Illusion 100
Lmao
As if
Lmao
What I learned from this video:
sharks are damn cute.
leavemethefuckalone ikr
yeah they are. This makes me wanna swim with them.
Schindler ikr
leavemethefuckalone dude same there legit kinda cute
Schindler same dude
I love what this guy does for a living
i love how sharks were adorable and chill
Shark expert: " theyre not gonna jump out of the water"
Shark movies: *heavy breathing*
I mean they can like for a big fish
@@dragonslayer2337 depends on what kind of shark and what is their prey. Great white when they are hunting seals jumps over 10 feet out of the water
@Khloé5 55555555 Hi
@Lena Peter HII
Like shark movies are accurate 😒
Mark: *casually swims with sharks*
Me: *dies when something touches my hand while washing dishes*
Same except it’s when the water touches my hand
Is your profile pic your reaction when something gets on your hands😂
@@ilyPath
Ew. Take a shower
OMG SAAAMEEEEEEEE
@@ilyPath So your saying you dont take a shower??
I'm sooo glad to know that you are alive. I was really shocked when i read the head line of this video and i had startes scrolling your channel to know that you are alive.
Men : why do women live longer than us 🤔
Also men :
13:02 14 years ago when I was *just casually working for NASA*
*i casually got accepted into Harvard University and got a degree that helped me get into Nasa*
14 years ago when I was casually on my way to the moon
@@stello6509it's not that easy
@@billieeilish8891 well it sure didnt sound hard the way he
said it
14 years ago I casually went to the bathroom and took the biggest dump in the world
Sharks with human blood: no reaction
Sharks with camera: The hunt is on.
Lol
They want to be influencers on Instafin
So true I threw my cam in the ocean got it back All I saw was buncha sharks biteing it
Η
Lolololklolllololololololol
I can’t get enough of that sound track when mark rober is working
"Porque os homens vivem menos"
"Why men live less"
Bruh, the sound-effects he used when pressing the button were definitely from minecraft
Bruh, sound-effect #2
Where
4:36😂
@@Taconiel bruh moment
_Aw man_
Sharks: We don’t want blood. We want to eat camera.
Nah fam. They're just playing with the camera like cats play with their toys
All for the gram, bitches love the gram
some sharks have been watching King Dice recently
achievement unlocked: comedy
No no no u all got it wrong, da sharks are incredibly attracted
piss
it was a very interesting experiment, thanks for helping me understand sharks
The boat might have just been more interesting than the blood.
I think sharks are also attracted to movement, like if you were bleeding and panicking causing bubbles they’d be more attracted to the blood?
Yeah
Yeah but remember that mark also donated blood which means he has a fresh wound when he dived
Oh yes, definitely. That's why you shouldn't swim with your dog, they're attracted to the circular motion of the doggy paddle. It's also advised if you see a shark in the water you don't rush out because they can't see you. Most of the time in shark attacks they assume you are some type of seal, take a bite, say "oh sorry man" and swim away.
le Epic I dont know that a tiny needle hole counts as an open wound
@@mothlastname2413 if it can draw blood, it counts
Mark: dips bloody limb in water
Sharks from a mile away: *Oh Hi Mark!*
josh zurek 🅱️ruh
lmai
I did not eat her! Oh hi mark.
Oof
Hahahahahaha
Like humans, sharks can only smell something when particles of it hit the receptors in their nose. So they couldn't smell a drop of blood from a mile away, but they could follow a trail of blood particles to its source.
Wooow, a nice fact to know, thanks 😊❤
I would be curious to see one of these but w/great white sharks. I wonder if they behave any differently
"I'm gonna head back to the boat, just so that I'm not a variable in this experiment"
This is one of the smartest comments I've ever read
Alvaro costa Except the fact that he just quoted the video and had nothing intelligent to say.
The Glock Ness Monster that’s the joke
The Glock Ness Monster r/woooosh
Nice
4 year anniversary of this awesome vid!
It’d be super interesting to repeat this experiment off the beach (anchoring boards so they don’t drift back inland) without the presence of a distracting boat, where people are most concerned about shark attacks and less likely to be as shark informed as the ocean divers. Though I imagine at places like the Bahamas the scenario Mark tested on would be more common.
Also would love to see a comparison between human vs prey blood (eg tuna, seal etc). The latter would be much harder to obtain ethically.
Wife:Don't do anything crazy
Mark:I am going to use my blood for sharks and also swimming with them
Happyduck rules this is why men have shorter life expectancies than women
Boi it's not his blood its cow blood =.=
They do use his blood later in the video
xXMrs cookieXx lol you didnt even watch the whole video...
xXMrs cookieXx lol he also used his blood, watch the whole video before you comment like that
This is why they attack surfers! They’re tired of the pranks.
How many fu/cking connections does he have
Lol
They investigate with their mouth sharks r scared of humans
Faid Recon Boi are
lol best commentary ever
I appreciate you showing some love for the motion sickness patch wearers of the world.
(I assume that that's what the patch is under his ear)
ㅋㅋ너무 유익한영상이에요! 구독자수 팍팍 많아지겠네요! 곧 한국사람들도 많이보게될것같아요
they're just casually petting sharks. meanwhile I cant even pet my chihuahua without losing a finger
Me too
😃
Chihuahuas are the reincarnation of satan himself has a dog
Santoss Really? O,o
You need to not baby it and make sure you’re walking and disciplining your dog
Eat 2 humans ❌
Eat a camera ☑️
This is such a great experiment and video.
Puts blood in water
Shark:am I a joke to you?
Ya know what? I think the sharks are figuring,, "Please! These idiots aren't even making it a challenge anymore. If we had the money to offer these morons a Million dollars, they'd jump into our mouths; NOT having the sense to realize they WON'T be coming OUT again!"
Johanna Fuzzy Bunny Slippers *It’s Free Real Estate*
"sharks aren't interested in human blood"
Sounds like something a shark would say ...
*_ BTW 30 JULY 1945 ... 74 years ago to this date: ....The ISS INDIANAPOLIS gets torpedoed and the survivors get eaten by sharks.... well, it's said about 150 plus _*
Robert Rudolph pshh yolo
I Stuck in Matthew 😂
Shark rober
@@catsforlife4273 ☣☣☣☣☣☣☢☢☣☢🔞🚺⛔🚫🛄🚺🛃🚾🛃🚺🚫🚼🚼📵🚰🚼📵🛃🚯🚫🚮🚺🚫🚮🏧♿♿🚺🚫🚼🛃🚮🚾🚾🛃🛄🔞🚸🚮⛔🔞🛅🛃♿🚼
him: **swims with like 50 sharks**
me: **touches a rock or plant without knowing panics**
한국어 더빙 해주셔서 감사합니다. 이전에도 재미있게 봤지만 더 몰입되네요
I clicked this video expecting Mark to get a shark attack...
*I left wanting a new set of headphones.*
Same here mate💀💀
So did i
Same here mate
Yeah
Exactly
*”Sorry, can we do that again? I wasn’t recording-“*
First :)!
@@millyglow3003 no
Wut somebody liked this at the same time as me!
@Al0h0 nobody ask if you care boi
Want him to die??
Женщины: почему мужчины так мало живут?
Мужчины:
ХАХАХАХАХА
Thank you for helping to inspire my own youtubing efforts team Mark! Raz :)
Thanos can smell a glorified pebble from a mile away
Yes
😂
You mean half a galaxy away
Seems like science to me
Well. I can’t argue against your comment.
*”and while he risked his life while putting the boards out, I prepared to push a button.”*
Honestly if you didn't know almost 10 times more people die from coconut than sharks so yeah
How does this have so many likes after two days?!?
*boom*
Story of my life
lol
CRAZY IDEAS you have great videos
Merci pour cette vidéo très instructive sur le comportement des requins. Et merci de l'avoir fait de façon scientifique.
Note to self: if a shark is coming towards me, I should pee my pants
Ha
Idk about u but I was gonna do that anyway.
Create a barrier 😂
If a shark was coming at me in the water i would also be shitting myself where i stood
Don’t worry, they don’t seem to like urine :)
Now repeat the experiment... with Great Whites and Tiger Sharks
LMAO them sharks don't play 😂😂😂
i agree with the great whites but weren’t there tiger sharks in this one?
Do you mean bull sharks instead of tiger sharks?
There were two Tiger sharks present. I think things would have been vastly different if a Great White or a Grey Nurse shark was present. Even worse, a hammer head. Three of the most ferocious sharks of the sea.
That's literally signing a death contract man,I wouldn't even do it at all
Random girl: why girls live more than boys?
Boys:
Please do this with bull- sharks and tigers would be interesting
Shark week is the safest week to swim in the ocean because all the sharks are too busy being on tv
Sosuke Aizen ha ha ha
So a bad time to dump the body’s?
sml reference?
blood is not the sign
a drop every 4 seconds
how do you bleed after a bite..?
Mark Rober: “Today I’m gonna be seeing if sharks smell blood”
Shark: Try Me.....
Out of tons of comments I made a comment about sharks has got the most likes thanks guy!!! Have a amazing day :D
Hi
InterGalactical Chicken Nugget same it makes my hands feel very uncomfortable
Jerry The Mouse hi twin
Lol
Девушка с месячными во время купания в океане
Акула:ооо едаааа
How is it possible that on one hand you can hear about the tragedies such as the one in Egypt, Hurghada, when a single shark near a beach over there torn apart a human probably without even provoking it and on the other hand you can see a video like this, where people calmly and peacefully swim in a shark infested area like nothing can happen to them?
عرفت هما عملو ايه في القرش دا حنطوه
@@yo_toy it´s a normal risk by swimming in the ocean
@@davidfink3818 yes , ocean is the home of shark not human
I ask myself the same thing. This looks crazy to me.
And i think that were tourist sharks they get feed often by boats
My class can smell a bag of takis from 20 miles away
It’s very rare
Lol what country are you from?
And gum
Sameeee in my school if u eat takis ur considered ‘cool’
Lol 😂
@@jalexs5283 you can really take a guess by the name and profile
Mark Robber: Can sharks smell a drop of blood?
_Last video: _*_6 months ago_*
i OnlY mAKe 4 ViDEos a YeAR
Josh can you pleas explain it?
Rip
Wow
@Josh well i understand it i just mocking mark lmao
I'm a brazilian spectator, I am loving to watch your videos and more awesome than that are you putting the dubbed videos for us
né véi kkkkk
Simmmm
Então? Posso dizer o mesmo! 😝
Finalmente achei um brasileiro nesse canal mil vezes melhor que Mr besta 😂
Eu nem sabia desse recurso do UA-cam, se chama faixa de Áudio tem várias tem como alterar isso e incrível!
The big question:
Which is better a crunch labs build box or Vsauces "curiosity boxes"
shark: likes cow blood more than human blood
guys who sacrificed their blood for the experiment: are we a joke to you
;-;
Save the cows
Shark dudes
Do not forget that humans are the reason
Most animals go extinct
;-;
When will a shark encounter a cow?
Your Mum 😂 Fr
@@loo4659 on the farm obviously
Me: sees a gray thing 200 yards away, races out of the water.
Shark man: Grabs shark by the nose and flips it upsidedown, with 20 sharks surrounding him, not a sweat.
0:27 Can sharks really smell blood a mile away?
5:22 this doesnt look like a mile
Perhaps.. but perhaps.. he’s sweating buckets and it’s just hidden by the ocean. Doesn’t matter, the ocean freaks me out anyway
Lol
sharks kinda get drunk when u do that. Its pretty cool. Never done it personally, wouldnt appreciate a shark turning me upside down so , common sense.
I just feel like the sharks were suffering from FOMO rather than following the scent
Thank you . Cool educational experiment.💪
6:52
These sharks are more civilised than my entire class
tsu bateva lol
That be true tho👉🏼👈🏼😖
XD
My class is the whole jaws times 100
Mine to
Next video: Do grizzly bears like being poked by sticks?
Yes
caleb lmao
@@Strawbi_Boba My dog did that before, but my mom took it before I could get her.
@@Strawbi_Boba The answer is: hell nah! I lost my head
Yes
Very cool and those sharks are beautiful! What I am wondering is if the sharks in that area are kinda "conditioned" by getting fed by tourists and boat or human focussed? The blood should might better be out of visual range so the sharks cant notice there is no prey. Also curious how this went with either Oceanic whitetip sharks or great whites since those are more aggressive and maybe also more sensitive to potential victims.
It would be different if there was a human in the water bleeding, the electrical signals would attract a lot of sharks as well as the blood. On the experiment side it would have been even cooler if there was some doodad that could mimic a panicking person/animal in the water.
"I don't want to be a variable in the experiment"
Sharks: b o a t
Experiment is not reliable because the sharks were more interested in the big boat where human tourists feed them.
Im going to touch the butt
Melodie Me finding dory or Nemo reference
I feel like there is one variable you didn't account for. The boat. They seemed more interested in the boat.
Good point!
Do you guys want mark to die?
Wasnt there something about the electronics on the boat or the motor or something that interacts with the sharks in some way or another?
Also there isnt really any way to test how hungry the sharks were. I'm sure a hungry shark would be way more enticed by the smell of blood than one that has already eaten earlier. Also, people tend to move around a lot on water, whereas a floating surf board will drift, but not really go anywhere, so maybe the amount of movement makes a difference too.
ok then your logo is skeletron prime and the destroyer from terraria.
imagine if the sharks just liked the surfboard
Okay.. In order to smell the blood the blood actually needs to REACH them. Likewise bears can’t smell food upwind, because the scent isn’t reaching them. If you just drop blood into the water they won’t immediately sense it’s presence magically.
Ironic that the “Pixar sits on a throne of lies” caption is during a freeze frame of blood ENTERING BRUCE’S NOSTRIL. Not just floating 50 meters away.
This is why the sharks that caught a trail followed the trail.
Shark infested water...
Shark: Bruh, I live here.
I know right? Saying shark infested waters is like saying human infested cities.
@DaNewZianDaRealDaFilipinoMan yeah
Bee infested air?
@@sontalks Oxygen infested Air
@Abdullah Ahmed Termite infested wood
Shark:**Travels 20 miles to find blood trail**
Mark Rober: *You fool, you fell victim to one of the classic blunders*
Saluted Firestarter nice meme
@lucky pawn and nobody wants it
*The most well known of which is never get involved in a land war in Asia. But only slightly less well onow is THIS*
Number 1: never fight a land war in Asia
Number 2: Never go against a secilian when death is on the line
@@ethanmuth5915
*AHAHAHAHAHAHAHAHAHHAHAAHAHA AHAHAHAHAH AHAHAHHA-*
honestly the mind conception of Shark, was something different but since i watched this video, i think sharks are Friendly
The current in the sea goes one direction .it means the blood drops went with the current in one direction where there were no sharks looming around there ,plus it was not deep enough.
Wait... 25 miles off the bahamas?
Bermuda triangle: come closer
Meta Chromo_Worlds[]- 😂😂😂
Bermuda triangle: *pedophile laugh*
You guys know bermuda triangle is nothing
Meta Chromo_Worlds[]- help a fellow small youtubers :)
1sub💞
2like💓
3comment done💗
4and i will do the same💖
The bermuda triangle is a myth
So the lesson of the day is... don’t bring cow blood with you while swimming.
Don’t bring any blood when swimming, so don’t go swimming
😂😂😂😂
Drain your blood from your body before swimming 😎
BRO I SEE YOU IN MEME VIDEOS
I LITERALLY SEEN U IN OTHER VIDS
(I’m just shocked)
Did they kill a cow to take their blood
Okay, I've already loved sharks, but now I wanna swim with them!!
I think the reason sharks disnt catch so much to the blood experiments was that prey move when hurt and bleed, just having stationary boards is like.. well the sharks are smart also
This man is 39 years old in this video. LET THAT SINK IN. Life is not fair. I really thought he was 25
Also he is rich and a genius.
Why does that matter?
@@acatthatistolefromarandomg1709 because he looks young and hes 39. Did you not read the comment lol
He worked for nasa....is married and has kids. 39 is pretty fair
FYI...don’t feel bad 39 is still really young . What isn’t fair is Pharrell Williams and Angela Bassett. Check out their before and after pics. Then take a look at their ages.
Mark Rober: Uses Minecraft Button Noise for pressing Button
Minecraft: I see you're a man of culture as well
Osmium two times
Go on bigpictureproject . net and read “The Present” for the truth about life and death, which can change the world from page one. Nothing is more important than reading it.
CREEPER🎶🎶
@@mr.mackey6012 mr. Mackey
Really seems like sharks are more interested in movement in the water than smell of blood
Yeah discovery puts everyone’s life in danger
I love how he swims with a ton of sharks and I just sprint out of the water scared AF when a seaweed touches my leg.
Underrated comment 😂
Lol ikr😂
So so true tho
Well, at least in that water that he was in, you can clearly see what's below you. The beaches closest to me don't have clear water at all, so i can't see what's down there
@@yespls4184 mines too the nearest is 8 hours away and the water isn’t clear, clean but not clear the sand in there covers it up
Shark: I did not eat her, I did not
Mark Rober puts feet in water
Shark: Oh, hi Mark
Lmao
Yes
Noice
Stop😂😂
HA I LOVE THIS
Dude just casually swimming the boards in with 25 sharks around him
Maybe the sharks learned from their first experience. They knew that the boards didnt have any actual meal for them
Sophie well I doubt that because it was a different type of blood and the sharks can’t see the boards because they are close to blind from what I know
They lost interest during the first experiment already, so I think it very possible they had learned not to be fooled again. Maybe if he’d waited a day, they would have checked out the human blood bags
Thats what I was thinking but I'm not sure if they have that kind of cognitive ability. Like if they can learn on that level
I thought that too
The Anonymous Cuber they learn, man....every animal learn something.
You know what would have made the experiment more legite: getting bags of all the blood types to see which ones the sharks prefer
in the description he does confirm that mammal blood is the same for all mammals chemically. It's just that a human cant pump out enough blood before dying for sharks to be interested.
That would’ve taken years to get them :/ every animal has different blood XD
FrxnchTxast iii He’s referring to blood types, O+ ,O-, A+, A-, AB+, AB-.
FrxnchTxast iii they’re talking about blood TYPES not species types lol but yknow go off sis
alisynn, there would still be no chemical difference between the blood types.
Maybe I couldn't hear if you already mentioned it but if you performed these two experiments one after suddenly another, they may have errors since they become dependent (should also ask statisticians and shark experts).
great video, really amazed
My whole life I was so afraid of sharks. But... They act just like dogs... I like dogs.
CAPUTCHO!!!!!¡¡¿¿
Well, dogs killed more humans each year than sharks :p
But dogs are certainly the animal in earth with the most close contact with human, so this explain that :p
They really act like one another and in Turkish shark is said dog fish(köpek balığı)
gud doggo :p
Go pet them bro
Nobody:
Me: How did he get this stuff to go through airport security?
He probably got it when he was there at the Bahamas
or he probably has his own jet
rose 🙄
Idk
He killed all the security guards to get the blood