Shark Attack Test- Human Blood vs. Fish Blood

Mark Rober
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I personally got in the water and tested if Sharks had a preference of human blood vs. fish blood. Get your first month of KiwiCo for FREE!!! www.kiwico.com/markrober
Also, thanks to Discovery for putting my life in danger. #SharkWeek begins August 9th.
Catch ME in ShaqAttack Monday, August 10th at 9p ET only on Discovery.
FACEBOOK: facebook.com/sharkweek
TWITTER: twitter.com/sharkweek
INSTAGRAM: instagram.com/sharkweek/
RUvid: ruvid.net/u-discoverychannel
TIKTOK: www.tiktok.com/@discovery
Here is a link to that tiny exercise machine I was using the the jet. Luke (my shark expert buddy) invented it and it's really clever. He's launching a Kickstarter really soon- whipr.com/
***Music info coming soon***
Here is a talented up and coming artist named Kenyi. Check him out! smarturl.it/1c5766




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Mark Rober
Mark Rober 2 days ago
Sorry this took awhile. I've got 8 absolute banger videos I'm currently working on through April 2021 but it turns out the Rona slows things down a bit. They will be worth the wait! For updates, follow me on social stuff @MarkRober.
Karez Batangan
Karez Batangan 22 hours ago
Don’t Read My Profile Picture! ✔︎ II
Fair Play
Fair Play 22 hours ago
1. You are not using actual human blood. 2. The fish 'blood' contains more than just blood, as you've added fish paste to it. The results from this test are basically invalid.
Eliza Robertson
This was by far my favorite of your vids Mark!! Happy to wait longer if all of your future vids are this entertaining!!
Mary Lun
Mary Lun 2 days ago
No worries. Love the video :3
Braden Battershell
Try the same thing but with crocodiles
Jennifer Carbone
Jennifer Carbone 49 minutes ago
This is the third time I watched this
Enguerrand Brusseaux
Enguerrand Brusseaux 50 minutes ago
Hes got to be the most fun person to work with
USA Throttle Control
USA Throttle Control 50 minutes ago
Hi! I started my own channel about super cars in USA I will start posting my content when I see that you are interested show some love and subscribe
Aby Nguyen
Aby Nguyen 51 minute ago
I dare you to drink the fish blood (I’m kidding, just drink something smelly...)
MathewRobinRogers 51 minute ago
Perhaps the fact the the 'fish blood' also had other miscellaneous fish bits in (whereas the mammal blood did not have miscellaneous cow bits in) may have skewed the results? If you had used blended cow (or un-blended fish, blood only), would you have the same result? 🤔
John Denner
John Denner 52 minutes ago
Who Knew people blended fish to get the blood?! That's Rocks!!!
14lou 53 minutes ago
Covid-19 tests are unreliable and don't actually test for SARS-CoV-2 which has never been shown to be the cause of any illness. That is, the gold standard Koch postulates have never been satisfied. That's why Covid-19 is a *SCAMDEMIC*
Danny Empire
Danny Empire 54 minutes ago
No fish were harmed in the making of this video😂
Novelyn Gomez
Novelyn Gomez 54 minutes ago
*cow blood not human blood
Zolani Hogana
Zolani Hogana 55 minutes ago
Must be nice to have stuff to do.
Riley Gustafson
Riley Gustafson 56 minutes ago
and rip fish
Pushink Studios
Pushink Studios 56 minutes ago
If you’re planning to go to college watch latest my video 🤕
Prime Box
Prime Box 56 minutes ago
I can't believe some of you. Are y'all really mad about them killing 20 fish... I swear, some of y'all shouldn't be on the internet if your this soft. First of all, science usually requires some for of sacrifice. Thousands of rats have died from covid just to test vaccines. Knowledge is a tradeoff. Also, we as humans consume so many animals that it is hypocritical to say they are wasting the fish. Humans merely poisoning the planet kills more fish a day than this.
Dr. Dung beetle
Dr. Dung beetle 57 minutes ago
when I think airplane food, I think ew. but seeing THIS... that's a whole new perspective of plane food!
Riley Gustafson
Riley Gustafson 58 minutes ago
lol fat gus was like sorry I can't touch you I'm babysitting my gran squirrels to day
Chris Gervais
Chris Gervais Hour ago
Truth comes out at 7:29 ~ Shark Attack Test- Cow blood vs. Fish blood
٭『 Rika-san』٭
O M G😨
Andrew Ortega
Andrew Ortega Hour ago
You should put a dummy in the cage and dump the fish smoothie on the dummy and see what happens
Audley Stewart
I wanna know where he got 5 gallons of human blood
Jackelin Ruiz
Jackelin Ruiz Hour ago
Woah this video gave me anxiety but interesting for sure
mummy 2010
mummy 2010 Hour ago
Couldn't even begin to imagine the smell 🤢
Keelee Bates
Keelee Bates Hour ago
*gets a compliment* “i respect that about me too” 😂😂😂
Elijah Hamilton
what was it like at nasa
Jumis Ramen
Jumis Ramen Hour ago
They straight up got NBA hall of famer shaquille o'neal on this my guy has connections
Isaiah Perez
Isaiah Perez Hour ago
“Please consider subscribing because my wife makes all the income in the family because Im not consistent on posting and quit nasa cuz it was too hard and putting all the hard labor and income on my wife”
Breadmonster 694
Did he not learn anything from 47 metres down??
Sans The skeleton
This dude acted like the corona virus was nothing and brushed it off lmao at least he wasn’t like those youtubers “ I tested positive” lmaooo
Christian Rivera
Dude #2 on trending!!😂🤟🏽
Milsim Mike
Milsim Mike Hour ago
Still using the same exact song? Thought it would change I’m honestly tired of it
Killer Hour ago
Didn't you already test this?
Brogle Hour ago
Dude how'd ya get the blood
Bryan is BACK!!!
Thats scary dont try that again
I saw you on shark week and I was freaking out!!! Your episode was awesome 😆🦈
RedStoneWolf Hour ago
if this does not get demoitied i am suprised but your pretty funny keep up all the funny work and that!!!
Ethan McGraw
Ethan McGraw Hour ago
I have a prescription box And the projects so fun This month I got the arcade catapult
Kiblord Hour ago
After we got the fish blood, it was time for the human blood. I got some family friends to help out.
devall bex666
devall bex666 Hour ago
aww i feel bad hope ya get better
avneesh rudra
avneesh rudra Hour ago
Joseph :D
Joseph :D Hour ago
I love your vids mark!
Melodias Hour ago
Plz quarantine if you indeed tested positive having no symptoms does not mean false positive, heck on a cruise ship without masks they had 40% of cases without symptoms and 80% on a cruise ships that wore masks without symptoms, if people like you do not take it serious we are doomed.
Jason Osborn
Jason Osborn Hour ago
Did you test the water with god
Sharks actually just have poor eyesight- like when they bump the cage at the end (they're not actively searching for him, just wherever that fish smell is). They're just like clumsy aquatic wolves lol
elena matson
elena matson Hour ago
bruh my anxiety went 📈📈
DASKAjA Hour ago
Where can I buy the NASA shirt, Mark wears on the private jet?
Lil_Nugget_fry 10
4:11 im sorry for all of the vegans and vegitarins out there........
RR W Hour ago
Hey wake up and create your own little way of success to make some cash, don't just watch these videos and expect it to come. God bless you and take care of yourself 🙏🏾💯
Ur make me feel poor u nerd
Jonas Jensen
Jonas Jensen Hour ago
Omg, when he hit the tank and all the sharks came rushing back. That was terrifying. And must have been the scariest moment of your life.
Diller Sutter
Diller Sutter Hour ago
I love he has sandals on a private jet
Because I saw you on TV
You were in shark week
ormentzz _
ormentzz _ Hour ago
He has some balls of steel
Tom Boucher
Tom Boucher Hour ago
nothing says '2020 America' like 'Americans are banned from traveling, unless it's a private jet'
Sol Bailey
Sol Bailey Hour ago
So in one video he talks to Shaq, gets corona, overcomes corona, flies on a private jet and nearly get killed by sharks. This is why I love Mark
Jason Osborn
Jason Osborn Hour ago
Your no better
Carmilla Karnstein
I kinda chuckled at how in his last video he kept reassuring us that no animals were harmed and that he went the extra mile to ensure the squirrels’ safety, and in this video he puts fish in a blender. Idk, I though it was funny.
Orange Sunflower BTS
Who else was here when it was number 1 on trending!!!!
Jason Osborn
Jason Osborn Hour ago
Your real cute
SologhostXx Hour ago
Was this re-upload
FireFloed Hour ago
Hey there Comment random things and by august 15 I’ll change the comment so people will be confused
Victor Jimenez de Paz
For all the vegans : get up with it
Ethan Alix
Ethan Alix Hour ago
I cant believe i just watched a fish get blended
Magnusson Productions
Gotta appreciate his commitment to not curse. Shark: * bumps the open cage inches from Mark * Mark: *geez*
Tiny Mike
Tiny Mike Hour ago
Abby Day
Abby Day Hour ago
I was not expecting him to get COVID I was like wha👁👄💧👁
exploring into cars
i dont know what hes saying but i watch it anyway :)
GambleFella99 Hour ago
Hold on man I'll be right back my stepsister is stuck in the dryer again
3xpl0iter Hour ago
He really believes the Earth existed for millions of years??? If you do research, the sun shrinks 5 feet per hour, that’s 43,825 feet per year, and that’s 8 miles per year. Now multiply 8 by only a billion years, that will give you 8 billion miles. So only a billion years ago, the sun would’ve been 8 billion miles closer to earth. The sun is 93 million miles away from earth currently. If the earth was over billion years old, it wouldn’t even exist because the sun would evaporate it instantly because of how big sun was at that time. The earth 100% not older than a billion years, simple math proves it.
Tech Science
Tech Science Hour ago
Welcome back we have been missing your videos
Richard Perrin
This video quickly moved into number 1 as my fav Rober vid!
ririri rooror
ririri rooror Hour ago
Imagine if one day we hear that Mark died and the reason wasnt so *Random*
xShakira Hour ago
are you giving the recipe to that tomato paste?
Gavin Wevv
Gavin Wevv Hour ago
He didn’t even know he had coronavirus and were in quarantine 🤦‍♂️
AH YES 2 hours ago
God dang mark is super ripped jesus
chezzboy the 2nd
chezzboy the 2nd 2 hours ago
Is a talk cap in coins
Schmohawk 2 hours ago
If I were in that cage, I’d want the bars to be a lot closer together!! 😬
Mai Accountt
Mai Accountt 2 hours ago
Is this the same Luke Tipple that hosted Opposite Worlds?
AshtonThePerson 2 hours ago
When you blend a fish corpse and get #2 on trending.. also lots of close ups blending it.
ProjectJas In_Christs_Hands
Earth is not millions of years old.
Mark: Ecologicaly freindly Me: IS HE KILLING 100s of fish Reeality Tv: YUp
Raphael Surisantos
Raphael Surisantos 2 hours ago
So hows the squirrel
Martha Lantz
Martha Lantz 2 hours ago
ky guy
ky guy 2 hours ago
Never heard of you before this video and now I’m subscribed
Theresa Pittman
Theresa Pittman 2 hours ago
Is there such a thing as ‘a little bit’ of Shaq?
•Loveday love weak•
Omg that's so cool
Cheese Ant
Cheese Ant 2 hours ago
Anyone questioning how he got 5 gallons of human blood?
mics mics
mics mics 2 hours ago
Michi Watkins
Michi Watkins 2 hours ago
Wow i would live Go do That
Unknown Unknown
Unknown Unknown 2 hours ago
hold up, those sharks dont look real
BangTwice Tea
BangTwice Tea 2 hours ago
This man got the Rona, beat it like if it was nothing and continued
Beatriz Gallegos
Beatriz Gallegos 2 hours ago
Anthony Raiford III
I feel bad for fhistick and fishy also fishy on me
Bjurvild 2 hours ago
You are awesome Mark, truly. Never stop being yourself.
AcePlays 2 hours ago
I can just see the vegans complaining
Shaheen Hossain
Shaheen Hossain 2 hours ago
Evelyn Lopez
Evelyn Lopez 2 hours ago
this gave me so much anxiety
DatsMy1-Up 2 hours ago
If you are vegetarian, vegan, or just do not like seeing blood, then skip to 5:47 when they start to take the fishes blood.
Baptiste HOBBE
Baptiste HOBBE 2 hours ago
Am I the only one thinking that it is not a pure scientific experiment if Blood smoothie also contains flesh, bones, organs etc. and probably spreading way more "smells"? A true experiment would be blood vs blood, not blood vs smoothie. Nonetheless, cool vid as always
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