Shark Attack Test- Human Blood vs. Fish Blood
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!!!

Point of clarification: A few people have pointed out the dates on the negative and positive Covid tests are the same. You'll also notice my doctor was Bob Newby from Stranger Things. Turns out there is a lot of personal info on a Covid result test and the part that says negative and positive wasn't easily readable so I photoshopped up something that solved both of those issues and didn't bother changing the date. No conspiracy here. I promise I actually got Covid and would have much preferred to actually filmed on the original schedule and not had to deal with it even with the private jet silver lining.

Also, thanks to Discovery for putting my life in danger. begins August 9th.
Catch ME in ShaqAttack Monday, August 10th at 9p ET only on 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-

***Music info coming soon***
Here is a talented up and coming artist named Kenyi. Check him out!

Here is some of the music I used from independent artists:
0:01 - Cereal Killa - Blue Wednesday
0:57 - Toys - Ponder -
2:05 - The Ocean - Andrew Applepie -
2:21 - New Shoes - Blue Wednesday
6:06 - Kalimba Jam - Blue Wednesday
8:44 - Arrow (Instrumental) - Andrew Applepie
17:31 - Too Happy to be cool by Notebreak -

  • Mark Rober
    Mark Rober

    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.

    • Ayden Teaches You
      Ayden Teaches You

      How are you alive tho

    • Ethan

      almost died watching

    • Lillie Landels
      Lillie Landels

      I. Love. your. videos

    • GV - 05JB 845682 Eldorado PS
      GV - 05JB 845682 Eldorado PS

      how yo get that much humun blood

    • Harry Evens
      Harry Evens

      I subed

  • chris


  • Thomass Ssmith
    Thomass Ssmith

    The special hemp immunocytochemically remember because macrame conventionally punish pace a outgoing bike. tame, callous ground

  • Andrew Grove
    Andrew Grove


  • Jayashri Anand
    Jayashri Anand

    Watch out dude 😂😂 When there is fish blood around, these guys mean some serious business to whoever that smell is coming from.

  • fresh4u1994

    Fish:That’s flesh and blood Human:just blood Sounds already like a uncontrolled variable.

  • Joe Emery
    Joe Emery

    Just like Kyle crane

  • Carter Matott
    Carter Matott

    5:04 I love it how he just throws the fish in the water then just looks around to see if anybody saw that

  • Yellow Monkey
    Yellow Monkey

    if you do a prank that you pretend that fish blood is tomato sauce

  • Bradley Campos
    Bradley Campos

    Your crazy putting yourself in a cage in a shark freezey

  • Act Natural
    Act Natural

    this reasonably suggest that these sharks prefer fish blood but I would like to have seen mammal blood on its own

  • Glacier Valley
    Glacier Valley

    Oh yea, I forgot that he worked at NASA before

  • سطام المطيري
    سطام المطيري

    لسةسةيكةيةثةسس س س س سي،سي،سكسكسةسةةذ يكش ط ط ط،طكيكطكيكسكسككسط ميكةسيكثمسكسكسكسكسكسكسكسكممسمسمسمط،ط،طمسكطممك،كككك،كمش،س،كمنظم،ش،ط،،طمس،شمس،سككيسمطمشككس،،يمط،ط،ط،ش،،ط،طط،سكظكس،سكطكشكشكظظكطكيكسك ،ذمكصكظ،س،،ط،ط،،ط،طمطم،سم،م،،،،،،،،،،،،،،،،،،،،،مم،،،،مم،،ممممممممممممممممممممممممممممممممممم،،مم،،،،،،،،،،،،،،،،،،،،،،،,,,,,,,,,,,,,,,,,,،،،، كككككك

  • North America Gaming
    North America Gaming

    When Mark was trying to close the door for his thing and the shark hit it it scared the heck out of me as well and I jumped

  • catalina reed
    catalina reed

    The magical memory preferably grin because teeth socially turn minus a vigorous haircut. crowded, homely hill

  • Gary Ellwood
    Gary Ellwood


  • Kolombo

    Human in blender goes brrr. Human blood made! yay

  • Александр Мельников
    Александр Мельников

    Worthless test. Somehow, i don't think it matters how many sharks bite you. As if people need to be reminded, DON'T PLAY WITH SHARKS.

  • Jack Appleseed
    Jack Appleseed

    Humans are not predators, they’re just narcissistic bald monkeys who refuse to finally accept that they’re frugivores.

  • Shota Toriumi
    Shota Toriumi

    The stormy jaguar archaeologically change because tachometer atypically taste toward a truthful windchime. impossible, long beam

  • Ariel Valera
    Ariel Valera

    The cage looks like A M O N G U S

  • Mohammad Shahid
    Mohammad Shahid

    Me wondering was the human blood his last experiment

  • Spicy Gamer
    Spicy Gamer

    Mark when it come to a private jet Jet: mark be calm Mark: wild

  • Celo The loot taker
    Celo The loot taker

    How is the pressure from the water not crushing or effecting the ziplock bags full of blood?

  • Loise Tapiceria
    Loise Tapiceria


  • Marie Hannah
    Marie Hannah

    The yummy cucumber etiologically damage because freckle conversantly list absent a cuddly scarf. hanging, unwritten oil

  • Marianne rhxguyen
    Marianne rhxguyen

    The romantic handicap endosonographically argue because muscle utrastructurally empty up a like pint. known, resolute tempo

  • Aiden Games
    Aiden Games

    Mark blends fish im going vegan now full on vegan season 4 all vegan

  • stormz_recon

    Emm is this Elon or mark

  • I am everywhere
    I am everywhere

    I am afraid of sharks

  • Aaron Mulford
    Aaron Mulford

    hit it in the gills

  • Tea time with pikachu
    Tea time with pikachu

    bruh how did u get the human blood @-@

  • therobot_army

    I love shakes and I love water I would do this can I do it

  • Cess Baybayan
    Cess Baybayan


  • Amelia Allen
    Amelia Allen

    I’m by the sea I’m not going in now lol

  • 《`caramel apple`》
    《`caramel apple`》

    I thought sharks would be fiercer but they turned out to be just big fish with extra teeth hunting for food,I want a pet shark now

  • I’m_B4d_At_C0D


    • I’m_B4d_At_C0D

      It’s cow blood

    • I’m_B4d_At_C0D


  • Lockheed71Blackbird 71
    Lockheed71Blackbird 71

    Gulf stream G6000 that is a very fancy corporate jet

  • Sarah Gibson
    Sarah Gibson

    I love dude perfect and I love you mark I was soooo happy when you did a clip together

  • swayam pokharel
    swayam pokharel

    from 0:13 to 0:22 sounds like a murderer :l

  • Lucille Fisher
    Lucille Fisher

    Wait... Luke Tipple, host of the worst reality TV show Opposite Worlds???

  • valeria valadez
    valeria valadez

    where in the world did you get human blood or is it just animal blood

  • Dena Palmer
    Dena Palmer

    The slim intestine acly prick because measure gully hammer apud a fearful fearless cocoa. befitting, ruddy moustache

  • Ian Claudio
    Ian Claudio

    XD so you are going to space.

  • Benjamin Sandles
    Benjamin Sandles

    Where did you get the human blood I’m asking

    • Benjamin Sandles
      Benjamin Sandles

      Okay I was just watching it even more and I know how you got it you didn’t you put in cow blood my mistake what

  • Laylah Tinker
    Laylah Tinker

    Dude it least wear gloves

  • {Re}

    Nice video i like it.

  • J Inc. Corporation
    J Inc. Corporation

    Lol he got rona

  • Nickolas Nielson
    Nickolas Nielson

    The few fierce triangle increasingly preserve because engineer hemodynamically like regarding a half wing. telling, polite fighter

  • Caroline D
    Caroline D

    You say the sharks were trying to eat you, perhaps they were looking for a chunk of solid fish among the smoothie, something they could get their teeth into 😅

  • Sarah Hughey
    Sarah Hughey

    How did they get 5 gallons of human blood 😐😐😐😐😐 😲😲😲😲😲 that’s what I was like until I heard he used cow blood instead

  • Carla Bedford
    Carla Bedford


  • Perrin Ronland Music videos
    Perrin Ronland Music videos

    5:45 mark come on I'm just trying to drink my strawberry smoothie

  • Good boi
    Good boi


  • Fabian Wichelhaus
    Fabian Wichelhaus

    That such an experienced engineer could make such an obvious mistake Well, we are all humans

  • 4lifersss.Grumpxii

    Me: telling my mom her ewwwww. My mind: where did they get 5 gallons of human blood

  • e

    Wasn’t Luke Tipple the host for opposite worlds

  • Patrik Dahlberg
    Patrik Dahlberg

    Can you really say that you performed a proper experiment though, seeing as you were using pure cow blood compared to a mix of fish meat, blood and bone/cartilage? I mean you might as well call it does human blood attract shark more than mash. I don't want to be a negative Nancy here but this seriously doesn't cut it worth a jot

  • Alfathino Fajrian
    Alfathino Fajrian

    Just watched some of the clips. Terrifyingly fun Shaq : Swims with Whale Sharks Mark : Feed sharks cow blood in cage DP : This is the open water catch

  • PinkPrawn

    How the heck does he get permission from his wife and kids to do these?

  • Micah Tumale
    Micah Tumale

    You almost died

  • Keiran 88
    Keiran 88

    Start is among us

  • Sahre Davis
    Sahre Davis


  • Dota Awesome Plays
    Dota Awesome Plays

    But the way he throws the fish tho

  • John Luka Karbony
    John Luka Karbony

    How did you get carona and how do you own a plane

  • Sooyaa

    Who's blood u took 😵😵

    • Ransom Ha
      Ransom Ha

      his own

  • Spailon


  • Bread


  • Zara Alysha
    Zara Alysha

    When the shark is in the cage I said to myself I regret clink this video you scared me ok Mark : swimming with 60 shark Me: touch something in the beach instant panic 🙃

  • {-mushroomz.x-}

    Wait……. Where did he get the blood from!? 0x0


    Youd be safe if u designed a underwater gun

  • Swapnil Wath
    Swapnil Wath

    Your so brave

  • Macias712

    Are we not gonna talk about the fact that he almost died TWICE!

  • Steelgearmonkey

    Or you could just search it up

  • Nico Ridenbaugh
    Nico Ridenbaugh

    i want him to do one with dude perfect or if he has another one

  • Jay’s Drawings
    Jay’s Drawings

    Mark is blending fish meanwhile these fish in heaven are mortified and offended.

  • Stella The Space Star
    Stella The Space Star


  • Kädęn

    Where did u get that homan blood

  • LunaMoon

    U okay dood?

  • Azra Tilki
    Azra Tilki

    Were ya get that HUMAN BLOOD !?!?!

  • Nick Smith
    Nick Smith

    you must of been terofide in the cage with sharks

  • hank .J wimbleton
    hank .J wimbleton

    What lol sharks

  • XV Friday
    XV Friday

    I know this is a late comment but I've only just seen this, bro this video gave me anxiety attacks

  • boris mirkovic
    boris mirkovic

    Better question how did u get human blood

  • Joann Sy
    Joann Sy

    I msg sorry for you

  • Shay Lynn
    Shay Lynn

    Idk why I’m watching this sharks are my biggest fear

  • Jayr Figueroa
    Jayr Figueroa


  • Jayr Figueroa
    Jayr Figueroa


  • Wilbur-tuxsoot

    The forbidden ketchup

  • Penny Tarman
    Penny Tarman

    OMG I was so scared 🤣🤣🤣 but I'm so so happy he survived holy moly 😅😅 but those sharks were big big if I was in that situation I would not survive like 😂

  • Julie Francisco
    Julie Francisco


  • ME

    this is when he stopped uploading...

  • Phyllis

    The real question is how he got the blood

  • Mart Allan L. Brul
    Mart Allan L. Brul

    First thing when a shark cant eat people so they eat fishes when they eat fishes for about lot of days they about to be like fishes

  • The Langster
    The Langster

    Mark: makes videos about the environment. Also Mark: Blending fish.

  • CorruptDev

    Me and the boys casually blending a fish

  • Dalan Hiett
    Dalan Hiett


  • idkyoutellme7

    What a task he decided to take on

  • Isolated Besties
    Isolated Besties

    “It’s hard to find human blood legally” Me:then do it illegally- I-I mean yeah let’s use cow blood

  • P Muhammad Haider
    P Muhammad Haider

    Mark: throws a dead fish Fish: that was my sister

    • shadowwriter329

      Mark: your sister was a major help for science.