The US Military Gave Out Shark Repellent For Years. . . So Why Did They Stop?
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- Опубликовано: 9 янв 2020
- Download the PBS Video App: www.pbs.org/pbs-video-app/
People have been developing different forms of shark repellent for decades--the military even issued a chemical shark repellent called “Shark Chaser” to pilots, sailors, and astronauts(!) from the end of World War II through the start of the Vietnam War. Thing is… it didn’t really work. Learn why they bothered passing it out--or even created it in the first place.
Credits:
Producer: Andrew Sobey
Writer: Samantha Jones, Ph.D.
Scientific Consultants: Leila Duman, PhD, Michelle Boucher, PhD, Joseph Sisneros, Ph.D. Eric M. Stroud, Ph.D.
Executive Producer: George Zaidan
Executive Producer: Hilary Hudson
Music:
Atmospheres Darkened-Oliver Adam Spink & Christopher Timothy White
Sources:
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Наука
I remember that useless shark repellent in the lifeboats when I was in the Navy in the 70s. It didn't reassure us, it made us wonder what else they were lying about
wow, no way! thank you for your service Henry! I bet we would all like to hear more stories and stuff
Ya, maybe just don’t take 4 days to rescue your own sailors
Meanwhile on scishow psych: sharks don't normally attack people
scishow psych: cows should be more scary than sharks
Plus, not actually "attacks." The sharks are just feeding. We don't call that an attack with any other animal.
The shark attacks happened that way. There were survivors and those who saved them saw the situation play out
What are you talking about? Anytime a predator "feeds" on a human we call it an attack. Bear attack. Lion attack. Wolf attack. Cougar attack. The wordsmithing doesn't change the results. You can call it tickling and it still involves teeth or claws ripping into a human. I'm stickign with the word "attack."
@@andrewferguson2333God created human to be top head shark attack on a human matter more then a animal life
Sometimes that shark, he looks right into you. Right into your eyes. You know the thing about a shark, he's got...lifeless eyes, black eyes, like a doll's eye. When he comes at ya, doesn't seem to be livin'. Until he bites ya and those black eyes roll over white.
Jaws
Should have asked batman to share his formula. It even worked on alien fish monsters.
some animals have a " I AM FRICKING POISONOUS, EAT ME AND DIE !!" colour pattern, other animals know this...why not use that pattern in your "swimwear" and be save ?!!!!
They do now, they made wetsuits with a pattern that completely camouflages you and another pattern designed to scare them away.
@7:21 "over the past 75 years shark repellents have gone....to hopefully protecting them from us." 🤦♂️
Yeah...cause when you're defenselessly bobbing in the water after your ship sinks that's EXACTLY what you're worried about.
Interesting video and concept. Any word on what the new substance the commercial fishermen are using now that they are having moderate success with?
Appreciate the references!
I think the stats are misguided. I assume they use the world population to compute odds of a being attacked by a shark. Most people are on land. I would want to know what are the odds of being attacked during a 24-48 hour period in the middle of the ocean. Or, at very least being at the beach of an ocean where sharks are not too far away.
I really like these videos. ☺️ They make me happy (and more nerdy).
And we really like you!
@@ACSReactions just found this video from a wikipedia/internet hole. i have no idea how i got here, but this is so interesting. i had no idea shark or fish repellant was a thing! I googled "anthropologist to the president" and got nothing so i am confused lol. can't wait to binge all the other videos
@@ACSReactions I like you too.
@@osamabinladen824ahhh there you are!
@@dirtnapz996 What 🙄
You kinda left out the fact that Julia child was the one who came up with the shark chaser recipe and made in a slow releasing way that it stayed in the water for hours to days.
wow i didnt know that i needed to know this !
Depends on where you are what time of day / year etc. I was surfing in NJ and I saw a 6-7 ft shark( I believe it was a brown shark ). 20 ft in front of me. It was in the wave so I had a clear view of it. To my right in the direction the shark was swinging was a young girl sitting on her soft top. I remember not knowing what to do , I thought to yell something to her but I didn’t want her to panic and splash around . Long story short the shark simply swam by her. She had no clue until I went to the beach and informed her parents. They immediately called her out of the water.
"Government was skeptical, So they brought in chemists' is something we don't hear often.
im a surfer and i still am a little afraid of sharks im always looking into the water
For good reason
They need to do their shark fishing near the coast where they're having all the problems
nope 🤦 that's a very bad idea! You never want to swim where people are fishing because fishing attracts sharks 🦈 sharks have learned to steal people's fish off their fishing lines before the person can reel their fish back up to the surface. Same reason why a shark will come if you're spear fishing and the sharks hear the sound of the spear gun go off or smell the blood of the fish someone has just shot. which can be really dangerous because you wouldn't have that spear gun locked and loaded just in case a shark was coming for you.
7:40 Oh wow, I live by this thing! Lol
That story always creeps me out. Watching your fiends disappear below the water. Ugh!
i'm still wondering what took them FOUR WHOLE DAYS to get to the marooned sailors... sounds absurd D:
Gregory Samuel Teo because the ship was on a top secret mission. When it was hit and sunk within 12 minutes, they didn’t exactly have time to radio for help.
i would try a low voltage repellent current.
if you are eaten...in the middle of the ocean...how would anyone know?
I don't know, probably posted on Facebook
They should have handed out Shark Repellent Bat Spray.
One wiff and sharks explode.
What a twist
Coronavirus online school brought me here, very cool kanye
Spaghetto sammmeeee
Fermilab episode is up over there already ;P
She’s looks like she’s having a semi-forced conversation with some creep and is just listening to him to be nice in the thumbnail
Haha, whoever was behind that camera must be a real LOSER.
wait...
Or just constipated
@@ACSReactions lol!
She needs to learn how to speak properly..........Her annoying ,vocal fry way of speaking ,makes video unwatchable.....
This video should be titled "How 1940s scientists tried to fight against millions of years of perfect evolution".
You had me right up until the obviously misleading statistics at the end.
So, if we know sharks hunting people is incredibly uncommon, why were they such a serious problem for the survivors of the USS Indianapolis? What made these sailors more vulnerable, or these sharks more willing to chance humans as a meal? Are ships lost at sea with lots of dead people floating around them more vulnerable to sharks because they might, ultimately eat a human if dead and then move on to highly weakened living people?
Wow. I had no idea I was gonna go on like that! I hope you find it useful.
I find it amazing that throughout your entire video you never mentioned that one of the people working on the shark repellent was one lady named Julia. Julia Childs.😝
Here people catch up the shark and making it as food
Who's here only because of the host?
Dr. Host is beautiful, but I like learning from her as well.
Go to Australia and swim in ocean then chances or % of attacks will change
We're more dangerous to sharks than they are to us?😂Not when we're swimming in the water!
And that's exactly when & why we need shark repellent.
If you want to keep a bear away, a load noise or flash of light would work better than a chemical. Sounds like the Gov't had a one track mind on this problem.
George Colbert What is load noise
Ha yeah the old “they’re more scared of us than we are of them” excuse. Okay.
So, Rotenone kills fish by making it impossible for their cell to use the oxygen present in the water that they'd usually absorb through their gills. But humans don't absorb oxygen from water. We breath it from air. Is it so, then, that it becomes a gas or produces fumes which have the same effect of humans? There's a missing step here.
Rotenone interferes with the complex process cells use to extract and store food energy. involving the transfer of electrons and biochemicals known by acronyms like, ATP, and NADH. Oxygen takes part but in ways beyond breathing. Likewise, rotenone is more insidious than just gumming up fish gills. The effects are more along the lines of nerve gas or ricin poisoning only faster -- if you soaked people in it!
It was an unworkable idea. They'd have done better to give sailors oversize novelty mallets instead!
It worked for Batman.
shark bandz
2 billion $stealth fighter and no 🤔
why would she say is more likely to be killed by a dog or lightning strike? such a BIG LIE, 2018 had 100 shark attacks she said, but only 30 died of lightning strike that year, how does that make it more likely to die of a lightning strike?, sharks are dangerous and is risky without protection or guide, you need to be thankful and MENTION there are repellents already that will protect you and them at the same time from people that just want to enjoy the marine life like scuba diving or surfing, like shark shield, or bands but the bands are still being improved.
Physics is the solution
REACTIONS Brain Trust
Follow-up: Given a sub-positive outcome of this deployment method, would singing Baby Shark improve my odds of avoiding the aforementioned grabby hands?
I think you're on to something.
@@Joel-yl5gv Vindicated, after all these years. Take that, MIT.
@@drewofearth6681 It has been 9 months. What is the name of your billion dollar company? ;)
Don't u say something made by julia child doesn't work😂
i'm more interested in bird repellent - is that even possible?
birds are kind of a pest in big cities... would be good if we could at least repel them from certain locations.
🤦♂️ let's cut down all the trees as well
Oh wait we already have
Just encourage the birds you don't like to nest on your windowsill. Steal and eat the eggs. Pretty soon they will fade away and you'll be left to mourn the loss of a tasty source of eggs, their beautiful bird songs and hilarious bird antics.
But you won't have poisoned any and thus risked going to hell.
Go kill sharks instead, please!
Sharks excrete ammonia from the skin when dead, or threatened.
🌊 🦈😱😢🦈🌊
Horrible. But is it? Just hurt for a little while right? Compared to dying of exposure.🙄
Super logic
Help me. Please do something to stop my man from joining the Military, I don’t like him to die in a war, I’ll be depressed for life if ever :(
This is about sharks
he'll be fine, casualty rate is so low right now.
Show him this recent politically-charged video: ruclips.net/video/Si7dl6BU78E/видео.html