Testing if Sharks Can Smell a Drop of Blood


I texted this clip to my wife who wanted proof I wasn’t doing anything stupid on a recent trip to the Bahamas Now if you’re wondering what my feet are doing in shark-infested waters with a bucket of blood 20 miles away from any land Well, that comes down to a conversation. I had with my friends at the Discovery Channel six months ago They told me Shark Week is coming up and they want to know what I would do if they could put me in the middle of the ocean on a boat surrounded by sharks for as long as I can remember I’ve always wanted to test if sharks can really smell a drop of blood in the water from a mile away Now before you say Mythbusters already did this They kind of did this as you can see to test this they poked their fingers and then stuck them in a barrel with these Tiny lemon sharks and since they didn’t really seem to turn around and look at their fingers They said it was busted now I’m friends with both Kari and Adam, but I think even they would have been at least in this case The methodology was less than scientifically rigorous so I came up with a more robust test procedure built some NASA great hardware for the experiment hopped on a plane and then a Speedboat and soon enough. I was 20 miles offshore of the Bahamas To kick things off I sat down with my marine biologist shark diving expert friend Luke Tipple and explained my plan in eventually Eventually I plan to test just how far they could smell a single drop of blood in the water But first I wanted proof that they actually preferred blood over any other scent So for my first experiment I plan to put four surfboards in the water equa-distant from the back of the boat each board would host two litres of a different liquid that we would pump into the ocean over the course of an hour then using A three meter radius around each board as a gauge we would use drone footage and count how many sharks went over to check out? Each board. So this board would be fish oil, which I heard was a general attractant for lots of fish Then we would have cows blood here Then sea water here as a control to make sure the Sharks weren’t just interested in the surfboard and then finally urine I’ve heard From surfers that a lot of them won’t pee in their wetsuits because they feel like it’s gonna attract a shark I don’t know a surfer alive who doesn’t pee in their wetsuit. But yes that’s definitely something that I’ve heard, a lot. It’ll liberate surfers everywhere, if we show it’s cool to pee in your wet suit. And so after a bit more discussion Luke was on board for the first of our two experiments Well as a firm believer in the scientific method, we’ll test it out And then you’ll dive Well, depending on the results I dive If I can’t pee, then the deal’s off And so with that we started putting the four boards together [Music] We also started collecting scientific donations from the crew All right, so now it’s time to fill these bags. Mm-hmm, what do you want to do first – pee or blood? Yeah, let’s do pee. Okay, let’s do rock-paper-scissors for who holds the bucket and who holds the bag Alright, one two three shoot? Ohh I gotta strategize… okay I know I know One two three shoot. Yeaaaa. Dammit Ohh that smells so bad It’s urine Whosever’s it is, they need to hydrate – dude this is going to be a nightmare. Oh it’s warm Your pouring sucks! Okay Oh that smell of All in the name of science That’s a great time of day to be doing this cuz we have a lot of sharks looking down here we got three or four lemons on the surface and I can actually see two Tigers down on the bottom and that’s actually a massive tiger shark That is huge All right, see if you can do it better job pouring than I did. Oh my gosh Oh wow. There’s a feeding frenzy It’s fine What do you mean don’t move it? I almost lost my hands They’re not gonna jump out of the water. Okay, so we’ve got sea water as our control, fish oil, we have urine, and cows blood So while Luke is bravely swimming the four surfboards out and anchoring them in place in preparation for the one hour countdown Now is a perfect time to explain the cool tech on each board I designed and built from scratch with my buddy Shawn Hodgins For this experiment to be robust All four boards need to start pumping at the exact same time after Luke has them in place That means we need to somehow start the pumps using a radio signal from the boat so each surfboard has a waterproof receiver box like this that also hosts the battery, a custom printed circuit board, and two Arduinos Then I have the remote control and as soon as I hit this button [mechanical whirring] They all start pumping at the same time We know each pump is working because the corresponding yellow light is lit up That’s important because they’re too far away from the boat to see if they’re functioning properly To pump the blood and pee We’re using a peristaltic pump this is a perfect choice because it’s a totally sterile way to get the blood from the bag to the Ocean since the blood never touches any sort of valve or something It just has these rollers that sort of pinch and push the blood through the tubing in a manner that just happens to be similar To a severed artery And so with the board’s in place It was go time operation shark bait test thing commence – three two one… beep All four going we have confirmation Everything is rolling. The experiment is underway. We’ll, let them go for an hour just dripping stuff out And yea we’ll see what happens. And after ten minutes I was really surprised there wasn’t a lot of action on any of the boards So so far. It’s pretty interesting I mean we’ve shown if you have a massive cut and you’re bleeding out and there’s this many sharks within like 50 yards of you that they’re kind of like ‘meh’ so like already that’s an interesting finding, right? You would think like a little bit of blood and there would just be a massive swarm But that’s not the case so far And to be clear we weren’t dealing with small quantities here the human body contains five liters of blood and after you use Two liters, which is the exact amount. We’re putting in the water then you die About 20 minutes in things were still pretty quiet, especially at the fish oil urine and control boards But then the blood board started attracting some smaller fish and soon after one or two sharks started taking notice Not a lot of love for my pee. I don’t know why I find that kind of offensive, but I’m just a little hurt Eventually with about 15 minutes left things started getting pretty wild over by the blood board The blood was spread out and made almost like a blood run way So you have the surreal line of sharks swimming up this Enticing blood trail one after another only to be super disappointed to find a big piece of styrofoam We’re almost done Three-two-one, the motors have stopped our experiment is done. I just like to point out the bags have been sucked dry So the engineering part of this experiment was flawless Gunshot everywhere. Yeah, no to super pissed off targets and so now it’s time to go in and review the footage and get a final tally for each board and what we found was that four sharks went to check out the fish oil then zero sharks went to check out both the control and The urine and then the blood board had a direct visit from a whopping 41 sharks and so now that we debunked some surfing myths about Urine and proved that sharks certainly had a strong preference for blood over anything we tested the real question was Just how much blood is interesting to them and there was one part of the experimental design That was really nagging at me. Cuz that was cows blood right that was cows blood. You wanna try human At least 10 living braiding blood bags around here Not everyone was luke and I about this idea Yeah, and then just draw will just have fresh blood just mainline it and put it in the water one up. Would you be down? Moondog, what do you reckon look at me? So Luke made some calls and soon enough we had an amazing certified bhajami and phlebotomist on board And after some generosity from the camera crew and even captain Scotty We had four bulging bags of human blood for our second experiment This is my actual blood free to see if sharks have a taste for it And if they do I probably won’t go three dining with them for the second experiment. We had three boards again We placed the control in the middle the board over here would pump the human blood Slowly at one drop a minute and then on the other side this board would pump the blood fast on average one drop every four seconds we were able to do that because another cool feature for the boxes we built was that by turning This knob you can control the flow rate So over time they can pump out different amounts and because sometimes we all have to step up and just do our part while Luke Once again risked his life by placing the three boards. I’d prepared to push a button All right, all of them are popular and good to go now the clock is ticking So we have like fifty five more minutes to go We’ll see if the Sharks notice there One drop of human blood every four seconds may sound like a lot and it certainly is but it’s also important to note That’s 40 times less than the first experiment where we saw so much activity in this case halfway in to experiment number two Even though there were tons of sharks still in the area. The boards themselves were pretty quiet We’ll have to see when we look at the footage afterwards. But so far it looks like the answer’s no Five four three two one Experiments over and so after the full hour we brought in the board’s and once again reviewed the footage to see that over the course of an hour zero sharks two checked out the control board zero checked out the slow blood pumping board and Exactly zero sharks checked out the fast one So this is by no means a perfect experiment but I think it’s safe to Qualitatively say that if no sharks came to check out 15 drops of human blood a minute in the middle of shark-infested Waters and probably gonna be okay with a small scrape I mean there certainly won’t be some kind of feeding frenzy with a single drop of blood from all sharks within a mile Now that I had some first-hand data to put my mind at ease I was willing to try diving with the sharks without a cage, but I had one final experiment I had a theory that if we secured a 360 camera to the front of a hand spear and then shot it near some sharks We could create the world’s first really cool matrix, like underwater bullet time effect. So I suited up and goddamn I Like theory proved correct on the whole time ham spirit because as you can see that footage What I’ll take home from this shoot is just more evidence of the amazing animal that sharks are but also the ability to point people in a specific direction to say Hey your thoughts about them are a little overblown this experience. Definitely changed my perception on sharks I would say I respect them more after seeing their raw power up close at the same time There’s less of that fear that comes from ignorance on top of all that I didn’t die 14 years ago when I was just a wee lad working for NASA. I remember getting my first ever bonus check for some work I did on the rover my whole life. I’d always wanted a really nice pair of headphones So I splurged and got these bad boys. So the Bose QuietComfort 15 s and as you can see I have used them extensively For the past 14 years Especially when traveling in preparation for this trip to the Bahamas both sent me some of their brand new headphones 700s So I used them for the whole trip and for the past couple weeks now, you should know both supported this video But they didn’t give me any specific talking points to say besides tell people what you honestly think and so after using them for two weeks what I honestly think is that if this represents my old headphones This represents my new ones these things are a total GameChanger And so here’s what I think are the four coolest features first off The noise cancelling is insane without actually trying these on it’s really hard to demonstrate on video. But here’s my best attempt this week The candlelight but you were to comb it I answered all these headphones this is exactly what my voice would sound like number two They are totally wireless with a battery charge of twenty hours. This was plenty for me. Never even to get close to stranded But if you do run it all the way down, they utilize quick charging So 15 minutes of charge time from a totally dead battery gives you three to half hours of listening and if your battery is somehow Totally dead with no way to charge you just open this clever Compartment and then you just plug them in and then you can still use them as passive wired headphones number three They have hands-free mode. So you never need to pull your phone out of your pocket Hey Alexa, play songs by hand rapidly You can also use the touch sensitive side to pause and skip songs and change the volume And finally, one of the coolest features is conversation mode this gives you super hearing and uses all four mics to actually pass in all the sounds from around you so you can actually have a conversation with someone without having to take them off and so while I’m no mkbhd That’s my tech review. I love these things and they’re super comfortable It’s like wearing a pair of clouds over your ears that can totally block out the outside world But also happen to have amazing sound quality. So thanks to Bose for making an amazing product and thanks to you for watching

100 Comments

  1. Roger Bohman said:

    Do this test were they dont offer shark feeding and diving, the sharks in this footage are all preconditioned to come to a boat and stay till feed.

    November 4, 2019
    Reply
  2. Gabriel Isaac said:

    What about great whites sharks? The one in FInding Neemo was a great white shark and the sharks in the video weren't or just pups at that point. So your video is a Failure.

    November 4, 2019
    Reply
  3. James Slaney said:

    Swim with a great white

    November 4, 2019
    Reply
  4. Caleb Seifers said:

    sharks jumps out of water bites on bag of urine splashes on marine biologist

    November 4, 2019
    Reply
  5. Phong Santo said:

    You wasted plenty of blood!

    November 5, 2019
    Reply
  6. Alex Gurevich said:

    10:11 minecraft button sound

    November 5, 2019
    Reply
  7. cookie melza said:

    Bruh have ya listen to your teacher

    November 5, 2019
    Reply
  8. Ps4 God said:

    How do u bleed in the Ocean if a shark doesn’t bite you

    November 5, 2019
    Reply
  9. Caiden Merritt said:

    gets eaten

    November 5, 2019
    Reply
  10. Luke Anderson said:

    12:15 hold up. Did he just spell noob n-e-w-b?

    November 5, 2019
    Reply
  11. DaTweaks said:

    12:32 EY THATS ILLEGAL THE OCTOPUS IS SUPPOSED TO BE UNDER THE ARM

    November 5, 2019
    Reply
  12. Arctic Wolf said:

    Why hurt yourself when you can hurt someone else!

    November 5, 2019
    Reply
  13. Dolphan said:

    Let's all appreciate him using the minecraft button or lever noise

    November 5, 2019
    Reply
  14. Ali_17 said:

    الي جاي من طرف zshowz لايك

    November 5, 2019
    Reply
  15. JESSEN FERNANDO said:

    There are No Trash in the Ocean!

    November 5, 2019
    Reply
  16. Carlos Molano said:

    wtf scratch

    November 5, 2019
    Reply
  17. George Zervos said:

    Are you really that damn bored dude??? What the hell is wrong with you?? Get a cat scan asap

    November 5, 2019
    Reply
  18. Frank Paulette said:

    Fun fact: girls in Miami can smell a dollar from much farther away than a shark can smell blood.
    ….about the same appetite though.

    November 5, 2019
    Reply
  19. KeylasentryGaming said:

    When he clicked the button is that the Minecraft button sound?

    November 5, 2019
    Reply
  20. Yt NicholasForReal said:

    I don't think you thought of how the boat is a variable

    November 5, 2019
    Reply
  21. ARMY Dragon said:

    i think its just me but i find the sharks are cute they look like puppys biting a toy

    November 6, 2019
    Reply
  22. wibblox plays said:

    GET DEMONTISED

    November 6, 2019
    Reply
  23. Candy Kieu said:

    How many likes can this comment get?

    November 6, 2019
    Reply
  24. jl only said:

    My greatest wish of all time. To swim with sharks😍

    November 6, 2019
    Reply
  25. JetDog said:

    I think they were distracted by The boat idk tho I’m no scientist I’m in year 8 and get c-‘s

    November 6, 2019
    Reply
  26. prying eyes said:

    Friends with both Kari and Adam,…..unspoken message received.

    November 6, 2019
    Reply
  27. Viola Seppänen said:

    You are craysy forever

    November 6, 2019
    Reply
  28. Adam DoesThings said:

    Jotaro Joestar if they stayed in London

    November 6, 2019
    Reply
  29. rqbbo said:

    yo

    November 6, 2019
    Reply
  30. rqbbo said:

    guy

    November 6, 2019
    Reply
  31. rqbbo said:

    guy

    November 6, 2019
    Reply
  32. rqbbo said:

    Guy: *Swims With Possibly 50 Sharks*

    Me: *touches sand* THERES A SHARK KILLING ME HELLPP!

    November 6, 2019
    Reply
  33. Jack Standley said:

    Hey Mark, just out of curiosity. Is that America online shirt 'The Midnight' merchandise??

    November 6, 2019
    Reply
  34. Elias Pretto said:

    This guy: swimming with sharks his size
    Me: scared of small waves

    November 7, 2019
    Reply
  35. phillyhippie said:

    Maybe the sharks learned there wasn't any food with the cows blood so they didn't bother with the humans blood

    November 7, 2019
    Reply
  36. John Ward said:

    Try it with the streams going towards the sharks instead of away from them.

    November 7, 2019
    Reply
  37. Misteryos Man said:

    Dude what is the brand of your headphone??

    November 7, 2019
    Reply
  38. DragonBone Fiasco said:

    Cows taste good, Sharks can agree with me too

    November 7, 2019
    Reply
  39. DaIeDenton said:

    Why use cows blood? How often do you see cows swimming in the ocean?

    November 7, 2019
    Reply
  40. Rotcod said:

    Yeah, but what's the rate of diffusion of blood in sea water? Maybe it's just a matter of time before it reaches far enough.

    November 7, 2019
    Reply
  41. Tara Malic said:

    Meh

    November 7, 2019
    Reply
  42. Moses Ramos said:

    It’s crazy knowing that Santa Cruz is my childhood beach and see Mark rober on it

    November 7, 2019
    Reply
  43. Valerine Voon said:

    I vote for mixing the whole thing together n pour it in the sea

    November 7, 2019
    Reply
  44. some idiot said:

    yo how they get that blood

    November 8, 2019
    Reply
  45. YOSHAZ YT said:

    Mark Rober, Did you know you are a YouTube video thumbnail in a meme channel? The channel that has the video that you are the thumbnail is Viper Monster.

    November 8, 2019
    Reply
  46. comic sans said:

    F in chat for that cow.

    November 8, 2019
    Reply
  47. Im_Spooky -YT said:

    I’ve got a Bose headset and it’s God

    November 8, 2019
    Reply
  48. David Louie Bedia said:

    What I realized after watching this video…

    "Sharks were clever than what I have expected"

    November 8, 2019
    Reply
  49. Celia Fan said:

    Isn’t cow blood, blood?

    November 8, 2019
    Reply
  50. Rachael Raghunandan said:

    Lol the shirt

    November 8, 2019
    Reply
  51. Lionel Chips said:

    LUKE TIPPLE!!! OPPOSITE WORLDS!!!

    November 8, 2019
    Reply
  52. Sandra Hovland said:

    a shark can smell one drop of blood within range of a large pool, that's a fact

    November 8, 2019
    Reply
  53. Carl Mitchell-Turner said:

    Sweee

    November 8, 2019
    Reply
  54. Raihan Rc said:

    Human: lets see if sharks likes blood
    Sharks: Human are omnivores so your meat stinks
    Cows on the other hand are vetetarians
    So they taste like sea WEED

    November 8, 2019
    Reply
  55. Norman gultom Gultom said:

    Human : I Wanna Test If Shark Can Smell Blood
    Shark : Meh…,I Just Want In Youtube
    Blood : Catch Me, If You Can !!!😋

    November 8, 2019
    Reply
  56. Aaron Choi said:

    a bucket of blood

    Wow

    November 8, 2019
    Reply
  57. Lapis Lazuli said:

    amazing 42 k took the time to hate this video- get a grip u dummies and try making the video and see how easy it is

    November 8, 2019
    Reply
  58. Extremelyboi The gamer said:

    WHAT sharks are those good bois

    November 8, 2019
    Reply
  59. Storm3r said:

    8:35 nope nope
    this is where i stop thank you

    November 8, 2019
    Reply
  60. Syk said:

    In the intro, i thought he was ON the beach, and then I saw how small the people were compared to him, and I'm like, "oh… he kinda high up"

    November 8, 2019
    Reply
  61. Syira Galaxia said:

    cool fact:
    People get killed more times per year by mosquitos than getting killed by sharks.

    November 8, 2019
    Reply
  62. Lu1zhp3akz said:

    Idiots they used to be fed from boats thats why , go into real ocean with wbighites

    November 8, 2019
    Reply
  63. Ernest Hemple said:

    Mark, want to help us with Hoop Street, we are creating basketball
    chutes and would love to have your imagination on how we can make it
    even more amazing. [email protected] If someone knows Mark, please
    forward this message to Mark. 801-615-0880

    November 8, 2019
    Reply
  64. Ernest Hemple said:

    Mark, want to help us with Hoop Street, we are creating basketball
    chutes and would love to have your imagination on how we can make it
    even more amazing. [email protected] If someone knows Mark, please
    forward this message to Mark. 801-615-0880

    November 8, 2019
    Reply
  65. Lisandra Negron said:

    try to make a compass

    November 9, 2019
    Reply
  66. ItzHans said:

    Noone talks about at 7:18 it was a minecraft sound effect.

    November 9, 2019
    Reply
  67. Landons lego said:

    Mark: presses button
    My brain hearing the sound: MINECRAFT?

    November 9, 2019
    Reply
  68. Tony Whelan said:

    I’d like to see that at night when the sharks start hunting

    November 9, 2019
    Reply
  69. Metaius Phillip said:

    cool

    November 9, 2019
    Reply
  70. Khalil'S Vlogs said:

    Wow I'm waiting for that video u want know if it's real!!!

    November 9, 2019
    Reply
  71. brandon bett said:

    i did that at tokoy for a trip

    November 9, 2019
    Reply
  72. PFC ZxAndy said:

    They’re literally littering the water

    November 9, 2019
    Reply
  73. Brick Wall said:

    I feel like these sharks have seen so much humans their used to it…🤣🤣

    November 9, 2019
    Reply
  74. Saakshi Sunil said:

    Okay but the sharks are so cute 😍😂

    November 9, 2019
    Reply
  75. Jan Arne Wirths said:

    Nearly 9 mil subs and still no ads.
    Love ya

    November 9, 2019
    Reply
  76. The Pathetic Gamer !! said:

    What !!!!!!!!! They just wasted their real blood 😨😨😱😨😱😨😱🥶
    This video really needs a big thumps up 👍👍👍👍👍👍👍👍👍👍

    November 9, 2019
    Reply
  77. TDX Riot sword said:

    wheres a great white

    November 9, 2019
    Reply
  78. i was infired by a hoe said:

    Okay but a bucket of blood? … who’s blood is it…..

    November 9, 2019
    Reply
  79. Lori Wolfcat said:

    “Pixar sits on a throne of Lies”

    O_o But Dory’s a smaller fish, what they normally eat, and Bruce was starving.

    November 9, 2019
    Reply
  80. randy gay said:

    there is no way I would take my own blood

    November 9, 2019
    Reply
  81. amit kumar said:

    U mfuckers instead of using cows blood use ur blood .

    November 9, 2019
    Reply
  82. Polaris org said:

    4:36
    Minecraft ogs wya

    November 9, 2019
    Reply
  83. Yeet and Delete said:

    Mark Rober:Let’s see if a shark can smell a drop of blood
    Cows:U better be using ur own blood.
    Mark Rober:Well………

    November 9, 2019
    Reply
  84. Hockey Show said:

    Noob*

    November 9, 2019
    Reply
  85. Ayu Ulandari said:

    👍👌👌👌👌👌👌👌👌👌👌👌👍👍👍

    November 9, 2019
    Reply
  86. Nick jumper said:

    Suprizingly the fish oil is more yello then the urine

    November 9, 2019
    Reply
  87. Linda Marx said:

    HaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

    November 9, 2019
    Reply
  88. Christy Clayton said:

    R

    November 10, 2019
    Reply
  89. Matthew Simanjuntak said:

    Fun Fact: Vending Machines injure more people in a year than Sharks do

    November 10, 2019
    Reply
  90. Darkness Lord’s Gamings said:

    You should of made the person pee in the bag

    November 10, 2019
    Reply
  91. XOofFloriX Ramirez said:

    Ayyy my birthday is in shark week

    November 10, 2019
    Reply
  92. Johnathan Balczum said:

    Try that with a hungry tiger shark and your lunch

    November 10, 2019
    Reply
  93. Jumpy Pancake312 said:

    Im jeaulos you guys touched a shark

    November 10, 2019
    Reply
  94. Ioakeim28 Roblox player 2019! said:

    Wait wait human blood?!?!?!?

    November 10, 2019
    Reply
  95. Golden Ninja said:

    Why does marks laugh sound like Freddy fazbear

    November 10, 2019
    Reply
  96. Poland ball said:

    thumbnail: 10 photos taken second before disaster

    November 10, 2019
    Reply
  97. Plz Tanky said:

    Thats so mich blood

    November 10, 2019
    Reply
  98. MNBMS said:

    I just noticed that Mark wears a cap underwater in the thumbnail…..

    November 10, 2019
    Reply
  99. boris asenov said:

    Oommaaayyyyggaattt

    November 10, 2019
    Reply
  100. zombie king179 said:

    Cow blood sharks love blood

    November 10, 2019
    Reply

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