Mark BECOME MY FATHER

Why do they not want blood but they want a camera lol

@Mark Rober, sharks are a lot more intelligent than people give them credit for. It's possible they didn't respond to the human blood because you already fooled them once.

Okay he sold me on these headphones on god

What is that, your girlfriends period blood?

10:55" I had a theory"......... On how a360 camera works?

I think sharks didn’t give notice to the blood because they are probably full? I mean? Animals are very aggressive when they are hungry 🤔

Have you tried gray white sharks? Also, check if the sharks were attracted to some type of electromagnetic pulse from boat.

Idk why but the sharks was cute!!!!!!

I wonder how many cows actually swims in the ocean

YYour a genius!

It’s A scientific fact that sharks can smell blood

I love this guy

Where u get that blood from...

Today from this video i learned that sharks are friendly creatures

love the aol shirt lol

This was informative I must admit

Sharks only like salt blood so this doesn't work

Why near my country

Are we not gonna talk about the Cheetos dust on his fingers 4:32

they are like sea puppies!!!! especially was luke was petting one shark's head!!

Testing if looking down the barrel of s loaded gun is life threatening

My mom can smell my sweat a mile away.

Very impressiv video. 👍I have been using my:Denon AH-GC 20 headphones. For more than 3years, almost every day, for 7hours daily!!! (approx)I only changed the ear pad's once.And you get a lot of value, for the money.Then again, I will probably buy the same Bose headset. When my headphones no longer work.

You just wasted 4 bags of human blood! Somebody probably died from not getting enough blood

of course they can smell you blood lol

Big shark fish

My class has unusually developed hearing senses. They can tell the bell rung when even a teacher standing a metre away from the bell says 'no'Do your investigation on this, Mark. Bet you will be puzzled.

Damm u have to be brave to go in with a bunch of sharks if it was me it would be a NO no no

*I literally died of surprise when that damn button mimicked Minecraft noises*

Maybe it's because they don't like cow blood as much as other animals blood.

Save blood save human

According to the Second Book of General Ignorance, you don't need to be bleeding for a shark to notice you.

My question: how did they get the cow 🐮 blood 🤔😐

is that illegal?becausethe urine and blood is not environment friendly

2:09 could've said "relieve"Missed opportunity

They look like dogs begging for food XD

i love videos like this !! Mark is the best

If you want to live a beautiful life before and after death just look for Islam and you never tire of searching or you will regret

They cleared the water after the experiment?

Those smaller fishes freely roaming with those sharks have more trust than us...

I am doing my open water and im terrified of seeing a shark which is rare for where i live and ur just swimming with tons of them

DAT laugh doe

Keep playing around sharks you will soon be dead

Hearts to

But...🍑🍑What if 1) they learnt that they were boards after the first time🤓🤓🦈🦈🅱️🅱️🧛🧛‍♀️2)they were not attracted to the blood on the first boat but to the fish that arrived at the boat (who can sence blood)💉🧛🧛‍♀️

Don't you think its nasty to put all of that in the sea??😖 expecially the urine😵😵

Cows blood don't use it

I love the sharks cuddling!

What type of headphone is that?

NASA engineer AOL shirt from 2 decades ago seems legit

I don’t think it proves anything the sharks were more interested in the boat

That Minecraft button sound

Please Get A Life !!!!

arent you scard

Answer is no if you used bull or great white sharks than the answer would be yesBy watching this video those sharks aren’t man eaters

Next video: testing if lions will attack a giant ball of string being dragged by a running human with ribeye's taped all over their jacket.

This experiment is flawed, these sharks are too used to being fed, no killer instinct.

"They're not gonna jump out of the water"Famous last words

47K comments Hahaha you've gotta learn and nice try!! 😂😂 It is hard to understand for people who do not live and grew up next to nature and ocean or sailing, fishing, meaning they are kinda "Big city life people" here aren't they. Shark comes to attack you only if they are hungry, same of Lion, but both great white shark and lioness the female lion always attack you hungry or not, they have the instinct of big hunters... and tell us about those baby shark, besides shark tend to come along close to a harbour and beach WHY cuz of boats arriving at ports and harbour deck they throw many stuff at sea food and whatsover which attact the small fish and white shark chasing fish so they're coming for humans sailing, swimming and surfing around too. In fact one of the smart things to stay away from shark at the beach is not to swim and surf at a beach that is in front of the harbours full of boats, and not to surf closer to the boats at the harbour deck. Great joke but they just had to learn as they don't grew up and live with nature so can't blame them👏👏😊😂 The Bahamas is such a beautiful paradise beach!! ♥

47K comments Hahaha 😂😂 it is hard to understand for people did not live and grew up next to nature and ocean or sailing, kinda big city life people here aren't they. Shark comes to attack you only if they are hungry, same of Lion. both great white shark and lioness the female lion always attack you hungry or not, they have the instinct of big hunters... and tell us about those baby shark, besides shark tend to come along close to a harbour and beach WHY cuz of boats arriving at ports and harbour deck they through many stuff at sea food and whatsover which attact the small fish and white shark chasing fish so they're coming for humans sailing around, swimming and surfing at the beach too. In fact one of the first things to stay away from shark at the beach is not to swim and surf at a beach that is in front of the harbours full of boats. Great joke but they just had to learn as they don't grew up and live with nature so can't blame them👏👏😊😂

next video can pee really cure sea urchens

No I why u doing that every one know sharks can smell blood why would you do this sharks call small good so I think a while way no why u doing that don’t you are dork

The ocean: Am I a joke to you

Hi Mike if you want some help with the lions i can assist. BTW there is a problem with the shark blood test. The sharks are focused on the boat as the boat usually feeds them - as demonstrated when you dived and they had a box of fish pieces to call them in. Don't try this with the lions!!! What would be a good lion experiment is how to defend ones self when faced with a lion - i will give you a hint - DONT turn and run

I guess they can

His flame thrower is from the Boring Company, an Elon musk company.

If you really want to call this scientific, you should've at least tried replicating the results in a different location with different boats and sharks. And that could've affected your results for the 'which human blood quantity do sharks prefer' scenario. Maybe the sharks just got used to the boats and realised that the blood trail was a false decoy and there weren't any humans to bite.

My teachers can sense bad grades and detention

I clicked this video just to read the comments about the title.

He got ate...

Did anyone else hear the Minecraft button noise?

sharks are attracted to disturbances in the water, blood is just the "icing" on the proverbial cake

they're probably more interested in the boat.

I don't know where he is, but that water is just jaw droppingly beautiful. Crystal turquoise looking blue I have got to visit there.

I stuck my finger up my bum bum

Many bloods were lost in this video.

Hey!! I was sceptical at first, but those Bose Headphones seem outstanding! Also, the shark video amazed me, That's 2 myths busted!! Thanks!!!

what is behind his ear?

10:46 but you guys didn't test fish blood.

I hope no cows died cause of this social experiment

I can smell my nose

Better video idea, if i kill someone is it murder?

I think this experiment is deeply flawed because the scent only flows in one direction due to the wind (im not 100% sure how windy it was but it looked like a mild breeze

😳😳 nooo sir.

The only issue I have with this experiment, is that there are places in the Bahamas that are spots where tourists can swim with sharks. Those sharks looked like they were used to boats, hence why they're hanging around the back-end of it. Might be a good idea to try the experiment again when the sharks aren't used to being fed off of the boat. Like a dog - if they associate the boat with food. Why would they care about surf boards?

you guys amazing...!!

actually no shark went to the human blood because they hate hyman blood as they say our blood has a weird blood i dont know if its true but thats what my teacher said

Everytime my hoes text me

Shares are like a bigger version of dogs

So frigin cute!!!!

wait so they put cows blood into the beutifu blue ocean?

Ohh yeah, just when I was working with NASA.............

They should test different type of blood (o positive & negative an etc)

What timestamp is the Cover of this video? I can't seem to find it.

Mark:”You should get these headphones”Me: *Checks price*Also me: “$400 Thank you, Next”

I say you try it again but this time let the cows use your blood.