Shark Electrosensory Experiment | JONATHAN BIRD'S BLUE WORLD
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- เผยแพร่เมื่อ 6 ต.ค. 2016
- In the Bahamas, Jonathan joins shark biologist Dr. Stephen Kajiura from Florida Atlantic University to perform an experiment which demonstrates how the electrosensory system of sharks works.
JONATHAN BIRD'S BLUE WORLD is an Emmy Award-winning underwater science/adventure program that airs on public television in the United States.
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The Sharks bumping into the camera makes them look so cute
The little "bonk!" When they bump the camera! Sharks are cute when people aren't trying to make them scary
this show is so good, you cant tell right away behind all the big and loud TV flash (which is necessary to attract and maintain viewers) but every episode seems to have something really interesting for me to google and investigate, especially as a new diver
Useful impressions of a complex sensory amalgam. Thanks for posting it, Jonathan and company!
seems a little backhanded but probably for a reason, is there an article or video youd recommend to explain this sense in more detail?
Jonathan's new video. First liked the video, then started watching.
Been waiting so long for this
amazing video. I was always fascinated by sharks
I love this show and I love the blue world
Thanks! As interesting as always! Can't wait for the next upload! :-)
1:43 the shark gettin high af off those electrical fields look at his eyes lmao
hahaha
Great video! Sharks are amazing animals.
thank U for uploading such good videos!
Cool video..sharks are such incredible creatures..so worth protecting!
i hope you guys have a nice day
Hi
Hi
Legend has it that if you are early, johnathan will reply...
I try to answer all questions, not just early ones!
zSins __
BlueWorldTV
Hvgcfffdcvvvjo
Yay, Senpai noticed me =3
Grate I am so intreted keep going
i love all ur vids ! keep making pleae
Sitting on the beach and wouldn't be watching anything else but you Jonathan! Love your videos!!
Watching from the beach?? How cool is that???
BlueWorldTV Yeah!!! It's the best! Come shoot video in St. John, USVI sometime! I teach diving here!!
Awesome stuff!
I love your videos!
this is amazing
Shark episodes are the best
That's so cool!!
Jonathan this is soooooooooooooo inspiring
YES ANOTHER ONE
Nice video/experiment! I LOVE sharks and can't wait to swim with them. John, couple of questions. Are you going to do any vids about Orcas? They're such friendly animals. Watched so many vids of ppl swimming with wild Orcas. Also, @ 7:46, was it a blue shark? Thx!
*+* 👍
Yes, that's a blue.
Hi my names Hayden I'm 11 and I have been watching ur videos ever since I was little I would watch them literally 4-5 hours a day. U have inspired me to be a professional diver (I'm hoping to be taking classes at my lake house to become certified) I'm also rly want to make plans to go to all the Aquariums in the USA before I'm 18! I also want to be a Marine Biologist when I grow up and I have u to thank for all of that so......Thank You!
I'll bet you are an expert on sharks!!
Super interesting
hi Jonathan I love your channel it is so cool I love scuba diveing but I have only done it once because it is so expensive
One of the Yellowtail Snappers also seemed a bit interested. Great video!
Thanks for watching!
What a wonderful episode, super interesting! Such great footage too, especially of that blue shark. :D
The kanji are almost certainly different, but Dr. Kajiura's name makes me laugh; it could be read as "behind the (ship's) helm" lol! He seems like a really cool guy. :)
I just hope I pronounced it right!!
WireMosasa
+BlueWorldTV Check out my videos in my channel.if you like it subscribe or give a 👍
hi Jonathan! I've been watching your episodes for a while now. please reply.
Hi! Thanks for watching and don't forget to tell some friends! :-)
Always awesome!!!
Thanks John!
Eduardo Pin. His name is jonathan why do people keep calling him john
Francisco Sanchez We call him as John, because we are closely friends...
+Eduardo Pin Oh
WOW I love it 😍😍😍 ❤❤❤
I can't believe my eyes!!!
Amazing. It is like they smell it.
I love this
Underwater instrumentation has come a long way since Mike Nelson somehow made NEMA 1 equipment work under water in the 50's ;)
Really love your stuff really hope you get a mil subs
Thank you! We're getting there slowly. Spread the word!
+BlueWorldTV Check put my videos in my channel.if you like it subscribe or give a 👍
I noticed that almost every time the sharks bump into the camera they close their eyes.
Yes, seems to be a reflex response.
It's so that they don't hurt their eyes when they bite their often thrashing and desperate targets. Many birds use their third eyelids similarly.
+BlueWorldTV Check out my videos in my channel .if you like it subscribe or give a 👍
The Guardian yep
Requiem sharks have a clear, nicitating membrane that can cover and protect the shark’s eyes. Mackerel sharks like the Great White don’t have this ‘eyelid’, so they roll their eyes back to protect them.
so awesome video! i dont know why You have only 120k subcribers...
We are getting there. Help us out and spread the word!!!!!!
U know the vid is awesome when a shark is on it
that is so cool
You are awesome
So interesting
U deserve more subs
I agree! Tell a few friends to subscribe please!
ok
You are awesome and I love you.
Wow! 0 dislikes!!! You know what? That's what you deserve Jonathan! 😄
Hmm not age well
I love the blue world
this is good Shark Electrosensory Experiment | JONATHAN BIRD'S BLUE WORLD.
KNOW to get it💟💕👺
LOVE your videos , very relaxing to me and very informative, but why aren't you scared or uneasy about diving with wild sharks?
could it be that the tiger shark was looking 4 a more intense electrical field which indicates bigger prey?
Merry Christmas Jonathan
Merry Christmas!!
And a happy new year
Can you tell us the voltage and amplitude of the electric current being used? Is it phasic/constant etc or would that steal ideas from Dr Kajiura's research sort of thing.
He deservers 1million subs
Cool cool cool
Sharks are so cute
wickandde I love when they swim with there mouths closed they look so freakin cute
They're just sharper puppies.
I love sharks tails.. ! ! !
@@nozmyx7685 do you know you can touch touch the
Their name
i also love animals so much😍
Richard Dawkins is right - evolution is the greatest show on earth!
I wish I could go with you guys
thats good
What is your most love shark spisies?
Hammerheads!
I like the bulls
@@reeltimewithaubrey8804 same
low-key obsessed with you
Hey Jonathan when are you going to see sleeper sharks, I'm not forcing you to investigate sleeper sharks I am just telling when you are going to record sleeper sharks. By the way I SUBSCRIBED :D
fam lit
curious to your depth on this dive.
I love the ocean so much😃😃😃😃😃😃
Alright!! Me too :)
I am from the Bahamas
Imagine having that as a sense tho.
im actually from Nassau,Bahamas and which part of the Bahamas did you go to film this video #242
We were up at the "Tiger Beach" area, which is on white sand ridge north of Freeport.
I've never seen a harmless electrical field. This is too cool.
Your entire body has a harmless electrical field! :D You can look up "bioelectromagnetics" on wikipedia as a starting point if you'd like to know more, or maybe "ampullae of lorenzini". ^___^
Pinchie08 l
ت
Hi
Hi
Jonathan are you ever going to make a segment about blue whales or albino humpback whales
he did a vid on blue whales
and albino humpbacks are propably just to rare.
no he didnt the video of the so called ``Blue Whales the were humpback whales doofus
There are two places we are looking at doing Blue Whales. So yes, I expect we will. Not sure when.
oh than i didn't remember it right (was a long time ago that i watched it)
BlueWorldTV if you are I can't wait till you make that could you maybe do an episode about the marina trench because in the deep cocos episode you said that's not the last time you'll be in a sub so it'll be really cool to see that also I love your show
Plz Do more cavediving
U should come to wreck island on Georgian bay
As always I love your program and tune in at lunch time every day. However on your Shark Electro Sensory Experiment: I would like to comment. I see a design flaw with Dr. Kajiura's experiment with electro-magnetic energy. The main problem is that his neutral stimuli (control) and the experimental stimuli are with-in 12" of each other. If the shark approaches either one or the other then who is to say that the shark was not responding to the control stimuli vs. the experimental stimuli? In fact just random movement of the shark would put him in close proximity of one or the other. I would suggest separating the two stimuli by at least 15 to 20 feet, and not in the same plane. If they are in the same plane the shark could swim over one and also the other, thus from a statistical standpoint there would be no difference in the null. I would also manipulate the intensity and the frequency of the electro-magnetic field. This would produce a lot of data just ripe for publication. I think the design presented is worth pursuing but the methodology probably should be changed.. Mike Malloy, Corpus Christi, Tx.
Two questions-what is the double hose regulator for-(bubbles in back ?) and why the wet suit in Bahamas?
This video will explain the doublehose reg
th-cam.com/video/SsWb9UaRQKw/w-d-xo.html
As for the wetsuit, even warm water is cooler than body temperature and you will get cold after a while. I always wear at least a 3mm wetsuit even in the tropics.
can i ask if you have made a video about black tip reef sharks? :D
Not yet!
i can't wait for you to make one! ^^
You should do something on goblin sharks
+KDestroyer 9 They live so deep how is he going to make a video about it
ughh I gotta do this for school
Great job Sir..........!
Please tell me one thing.....
Is it safe to dive in the oceans...?
I mean, do sharks not kill the human beings? Other deadly animals like snakes do not affect the divers?
It's perfectly safe!
4:52 wow this Caribbean Reef Shark is the same size as this tiger
if you got more than 1 oxeygen tank, would you be able to stay underwater longer?
Yes, if it's shallow, because air is not the only thing that limits time underwater. As you go deeper, you have a limit on how long you can stay without decompression sickness.
Aww I liked the old music
We jump around a little.
So basically, the sensory holes on their snout are whiskers for a cat or dog so they know when something is near their mouth and how far away from their mouth it is?
no they use it to detect something below the sand or in total darkness. Whiskers are primitive in comparison.
i think cats and dogs rely more on their eyes and nose
SHARK ODON I understand that but since they are in the water, just swimming would push the whiskers back causing them to be useless. So having electrosensory would make up for the face they don't need to see where they bite.
Wow
Hi Jonathan. A question for you. Why don't the sharks detect your electric field and have you for lunch, especially those big tiger sharks?
Because they also have eyes and can see that I'm not prey.
you are so cool
Thanks!!!
This made me want to swim with fish haha
Have you ever seen a sunfish? And if not, can you try to make a video on that?
FlyingMygga I have
Was it cool? I will probably do it in the future. I love them
+FlyingMygga.It was fun and it was huge!
Hi Jonathan ! aren't you scared swimming next to a big shark like this ? and how come they don't attack you guys ? I don't understand.
Its extremely rare for sharks to attack scuba divers. They usually only attack humans at the surface because they mistake them for other animals like seals.
actually its not just that they rarely attack scuba divers but just as rarely they attack people on the surface.
shark attacks are EXTREMLY rare. there are maybe 50 a year in the whole world. its more likely that you die from a falling coconut.
even more rare is that these end up deadly. that are maybe 5 out of these 50 and thats not because the shark eats you but because you bleed out or drown while in shock.
You got to understand that sharks dont prey on humans, if they did you could never even enter the ocean. They infact dont even quite now what you are because most of them have never seen a human in their live. And thats why attacks occur. Unlike humans sharks dont have hands and the way they "test what u are made of is by biting. They aren't biting really hard for another shark it wouldn't be deadly just a little injury bit because of our soft anatomy that the shark is unaware of you might be missing a leg or an arm, but NEVER a head. Thats because the shark doesn't have the intention to eat you and thats why they will always leave you alone after the attack because he realised you are not tasty or on his "menu"
The only reason why people die in a shark attack is because help sometimes comes to late.
Sharks appear to have learned though evolution that attacking unfamiliar targets doesn't often end well. For example, they might be poisonous.
@ness Sorry but that is just dumb myth that was proved wrong too many times. Reason why they don't attack because there are too many divers and they are not so big. Lonely diver would be in a big trouble.
@Shark Odon Most of things you wrote are very wrong. Bunch of theories without any proofs. Real truth is (proven in real life) that shark will attack you if he see that he can win.
It will also probably eat you (also proven too many times). Maybe he will not like your neoprene suit but he will be satisfied with your meat.
sharks r my favourite animal
List of sharks:
Great white shark
hammerhead shark
oceanic whitetip shark
wobbegong
longtail carpet shark
tiger shark
bull shark
sand tiger shark
lemon shark
nurse shark
whale shark
basking shark
angel shark
(remember its only some)
شكرا لك أخي الكريم أنا مجب جدا في قتانك الرائعه
Thanks for watching!
Only lemon sharks sniff
The small size of the electric field may be more like the Lemon shark would prefer as food. The Tiger-Shark may not be interested in prey that would produce such a field in that area, ( sand bottom). What would happen if the field or location changed?
That sounds like a good idea for another experiment!
where were you in the Bahamas I live in Abaco!
Holy cow really? Seen this?
th-cam.com/video/TTICP6m-FyY/w-d-xo.html
by the way I live on man o war cay!
I'd love to live out there!! I bet it's expensive, isn't it?
Blue world please do the white or black tip reef shark
Check this one out
th-cam.com/video/_IyvwoV6M1k/w-d-xo.html
Don't give up on your channel
My curiousity is too much but like what are those fishes like white and black beside the sharks those fishes are always following them
4:17 who saw the shark in the background
Me
if they are provoked each other or if they r hungry