Shark REPELLENTS - Do They Work?

Join shark scientist Kristian Parton in today's episode where we discuss - do shark repellents actually work? There are now a number of different shark repellent products on the market, including Shark Banz, Freedom+ Surf and Rpela, but do any of these products reduce the risk of a shark attack or shark bite? Find out in todays episode!
Research paper: bit.ly/3mpSmPt
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Shark Bytes is a youtube channel dedicated to bringing you all the latest news, research and information about sharks around the world! Kristian Parton is a current marine biologist and shark researcher who has spent many years working with sharks in the field and laboratory. Having a passion for sharks and rays from a young age, Kristian now wants to bring the weird and wonderful world of sharks to your screens at home!
If you enjoyed this video make sure to SUBSCRIBE to the channel, you'll also be able to check out some of our other great content on the Shark Bytes home page here: / @sharkbytes
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All content used is in conjunction with the creative commons license, no copyright infringement intended.

[@Sharkbanz-Official]

Kristian, thanks for bringing up this topic for discussion. I want to provide some information here on studies for our products and magnetic tech to clear up some inconsistencies. In tests on bull sharks in the Bahamas in collaboration with Discovery Canada, bull sharks interacted with the device over 1200 times. With the treatment (the repellent), 85% of the time, the sharks displayed avoidance behaviors. There were no attacks on baited dummys while the device was worn. Without the device, the dummys were attacked on average of every 46 seconds. For our fishing product, the Zeppelin, which uses the same magnetic tech, an extensive study by the Western Australian Government showed the device reduced shark depredation by an average of 65%. When only 1 or 2 sharks chased the fish, the percentage was higher, and when more than 2 chased the fish, the percentage was lower. It's important to acknowledge that our products, like any safety device, will never be effective in all scenarios around sharks all the time. The goal is providing an affordable, common sense risk reduction measure. Additional organizations that have validated Sharkbanz technology: Coastal Carolina University Marine School Florida Atlantic University Mote Marine Laboratory (on sharks and stingrays) NOAA Affiliate - Hawaii - Dr. Melanie Hutchinson Addressing the great white: we are restricted from doing any tests on great whites which simulate a realistic scenario in which an ocean-goer would encounter one. Regulations prohibit any testing which simulates a human or device used by a human or activity done by a human in the water. So, it's a bit of a catch 22. I think we can agree that throwing a tuna head to a great white and using that as a measure of efficacy for deterrents is essentially irrelevant when the real task is determining if one of these devices is effective when worn by a surfer/swimmer/diver etc. These animals are smart and can easily determine that the tuna head is food. In contrast, what we need to do as individuals is give a signal to the shark that we are not prey. These sharks are already wary of us in most cases, so these devices provide a way to give off a signal to that investigative shark that you are not food. Again, that will never be 100% effective, but it does reduce the risk. We are aware of at least 8 individuals who have deterred GW's in the wild using this product. In closing, I also wanted to say thanks for bringing up this interesting study on the reduction of global shark attacks if everyone wore deterrents. While we know that will never happen, it was an engaging thought experiment on shark deterrents and safety devices in general, much like seat belts and bike lights. Take care, and enjoy the water, Nathan Garrison Founder

[@leonvla]

Thanks for your long reply and elaboration on this topic Just got bitten by a dog, and it's pretty painful. Don't even want to think about sharks' attacks. Thinking about getting your device for the South African trip to secure myself.

[@ivanborisov3974]

We've all seen how the Air Jaws movies were made. Would it be possible to make a seal model and add the deterrent? After all some of the attacks on people are interpreted as "misidentity". This will also show how effective the products are against a high energy attack from below.

[@OpenGL4ever]

Did i understand you correctly, you are not allowed to use something like a crash test dummy to test, if your device is effective against a white shark because of regulations? If that is the case, why don't you test your device outside your country where regulations are different?

[@twsantacruzify]

Sharkbanz2 works. You just need two of them. One on wrist and another on opposite ankle. Worked great diving near whites in Monterey California and actually approached within two feet and quickly retreats.

[@SHARKBYTES]

Thanks for sharing your thoughts Anthony, would be interesting to see two in action

[@grubbyy]

i would shit all over myself

[@christophercarrillo4726]

I want to go spearfishing, but I’m in California. The HOME to the whites :(

[@briandavion]

Would present exploratory bites, but I'm not sure it'd stop a polaris attack from underneath,

[@rhiannon14982]

I live on the west coast of Australia. My shark repellent is not going in the ocean. It's worked really well for me so far.

[@perkosherrigh7243]

Your shark repellent is not going in the ocean ?

[@bethoneybee]

Sensible.

[@stewartdavies929]

100% effective

[@marcopohl3236]

Effective, boring but effective

[@edt5976]

😁😁😁😂

[@jc4liferesearch5]

Sharkbanz 2 is pretty good device for most of Sharks, a Great White is a different thing because the way they use to ambush their pray sometimes swimming up from really deep super fast and biting .. in that “type” of attack nothing will work but the famous “bump and bite” type of attack will be drastically reduce by the Sharkbanz 2 device in most of Sharks included Bulls ..

[@sandycultofthesun]

how can you trust the company after they put out bunk research and was immediately disproved.

[@felicityholder825]

I'm from QLD Australia and work for a Marine Research organisation for marine mammals. Thank you for calling out shark nets and drumlines. Not only do they not work- they have the potential to catch other animals such as Humpback Whales (who migrate up our coastline from July to October to breed) and their calves, turtles, and dugongs. Shark nets do shit all in preventing sharks, they just kill the wildlife we all fight so hard to protect. I was absolutely disgusted when I found out that NSW were putting in sharknets just before Humpback mothers and calves generally travel south. Of course you know all this but for anyone else reading- sharknets, drumlines and baithooks suck.

[@SHARKBYTES]

Great to hear from someone working directly on this in Australia!! Thanks for sharing your thoughts Felicity, hope you enjoy the channel :)

[@stewyoung8523]

Nets are awful. I'm telling you the great white fears the Orca. A bunch of fake Orcas anchored office beach. Like putting a crow in a cornfield.

[@spirituellebuchermeditatio9264]

Airbubble curtains in the water are better than nets, why they are not used, no shark will cross them

[@Ericthered21]

I always wondered if carefully controlled sonar pulses would work to deter. Provided if you could integrate it with swimmers in/out of the water

[@briandavion]

and a net filled with dead Whales proably doesn't dischourage sharks from being around. just the oppisite

[@duncanedwards6461]

You mentioned in a video that shark blood itself could possibly repel the sharks ? Is there any sign of this being tested ? Thanks for the content.

[@ivanborisov3974]

There is a podcast for the attacks in Réunion and one of the last happened to a group of surfers. Only one of them wasn't wearing a deterrent and got targeted. Can't remember the deterrents brand though. As for the use on GWs - if it does a breaching high energy approach from below, the shark will be in the active area of the deterrent for a fraction of a second and one will still be a goner.

[@thomasdilworth7691]

SharkStop, an Australian company, have produced a wetsuit with panels fused to the neoprene which prevent the teeth of a shark penetrating the skin, you will still receive bruising and crushing injuries but you wont lose huge amounts of tissue and bleed out. I'd definately wear one of these suits coupled with a sharkband , one on my ankle and another on my opposing wrist to extend the magnetic field, as this would give me piece of mind. If the sharkband didn't work then I'd have a lifeline in the wetsuit.

[@shannonpearce7742]

I've enjoyed all of your videos Kristian ~ thank you! I was thinking that perhaps a wetsuit designed with orca markings worn in combo with a shark repellent wristband mimicking orca calls might be effective?

[@palathaxx]

Non-shark scientist here, so pardon me if I’m wrong, but sharks have many other methods of detecting prey, apart from electroreception. I believe they can detect changes in pressure, and can also utilize all five of our senses. It seems difficult to deter a shark attack by disrupting only one of their senses.

[@SHARKBYTES]

This is very true, they do use most of their senses, although some more than others. Smell and sight for sure, and as you mentioned pressure, via the lateral line. Then finally electroreception!

[@donnaflowers1994]

Abalone diver was killed and when pulled on boat his shark shield on. Huge GW. His name was Paul Buckland

[@alexmultimodalpackrafting915]

I am sceptical of shark protection myself, but I also don't like deceiving commends with a sensationalist twist. Why did you fail to mention, that this incident happened 21 YEARS ago, especially with all the technology advancements in that field since then?

[@troothhertz6297]

Hi any suggestions on camoe dive suites ? Like a sea snake dive suite? As a deterrent?

[@SHARKBYTES]

Anything that’s not brightly coloured in my opinion! Lots of sharks eat sea snakes, so I’d avoid those if I were you 😂

[@kasimirhauptman2717]

For a long time I have been wondering if it would be possible to use patterns of supposedly toxic/deadly animals that sharks never eat/attack ... for example a wetsuit with the pattern of the blue-ringed octopus (the unique blue rings) .... or of the banded sea snake (black and white stripes) -> that way the sharks instincts would prohibit any attacks ? Never read about any testing in that direction so far ... maybe we should start :D?

[@SHARKBYTES]

I actually feel like I have seen some banded black and white wetsuits that have been designed in this way, although i don't know how much its been tested scientifically!

[@WheelieTron94]

There's actually a company called Shark Mitigation Systems that developed a line of wetsuits along that line of thinking, banded in a similar way to sea snakes, not sure if they're defunct now as a cursory search shows their wetsuits are hard to come across but it has been explored a little bit.

[@lesliebrown5721]

They actually have those I saw a whole special on it on I think it was discovery channel or animal planet

[@Delaunay73]

I once saw a surfboard with sea snake white and black stripes. Sounds like a good idea. But does it really work? Someone should do a real scientific study about it because this could potentially be a game changer for humans safety in the oceans.

[@heatherjohnson5824]

I always wear a black and white swim suit in the ocean.

[@Judgement_Kazzy]

Humans: "we spent thousands of man hours developing this sophisticated device meant to keep sharks away from whatever it's attached to" Bull shark: "hmm... Crunchy"

[@SHARKBYTES]

That repellent was GONE

[@WheelieTron94]

From all I've read the only class of repellents that seem to be of any practical and effective use are the active electrical repellents, and of those the only ones that've been remotely tested properly and been proven to reduce close interactions over significant periods of time were those by Ocean Guardian (although the implications especially of the SARDI study seem to show that there's circumstances where a shark will have it's instincts primed enough that it pushes through any discomfort to go for an attack anyway). Even so I would only trust something like that to buy time to get out of the water, also an annoying side effect of how strong they have to be is the diving kit at least can get pretty zappy and uncomfortable, and the least effective deterrent is one you don't want to use. I think we're definitely a long way off true immunity to risk from shark interactions, at least until full titanium atmospheric diving suits become as cheap as wet suits anyway.

[@SHARKBYTES]

Great to hear your thoughts on this!

[@thecrimsonknight3033]

I'm a landlocked resident, quite the opposite of a place you'd find sharks outside of glass. That said, I spent some time in the USCG because of a fascination of the sea and such an alien world from my own. I tend to avoid going beyond waist deep in the ocean, which is fairly good at deterring any large critters from trying to check me out. If I were to venture into deeper waters in a place that is known for sharks to inhabit, I'd prefer something over nothing. Of course, measures to deter sharks can always benefit from continued study and testing. Knowing more about why sharks go for us is invaluable to building defenses that don't harm the shark or surrounding ecosystem. As someone who has a deep respect for all life that shares this rock with us, I think it will be great to see more of these advancements. I like the other ideas about certain patterns or colors that create a pause in a shark's willingness to take a test bite. Combinations of these ideas, disruption and visual caution, could bring that percentage up. It'll be interesting to see what comes next.

[@georgebence5662]

oh no, i was thinking of getting something like this specifically for great whites in cape town.. i guess i will just try and stick to the crowds for the safety in numbers effect

[@SHARKBYTES]

Yeah i'm not entirely convinced on their effectiveness personally, and for the cost too!

[@meganwalker2589]

If everyone was wearing a shark deterrent do you think that could be more damaging to sharks that are influenced by them? Could overuse of them for example in Florida with the blacktips encourage the blacktips to leave the area? I think much more research is needed before I would consider wearing one, at the end of the day we are in their habitat we shouldn’t be making them leave

[@SHARKBYTES]

Good thoughts Megan, I don't know what the range is on the devices, but i can't imagine its more than a few feet/metres - so i don't know if it would distress them enough. It would be really interesting to see several of these devices though in close proximity to see what kind of effect that might have on sharks. Its a difficult one for sure, and you're right: much more research is needed!

[@420pbomb]

That would be ideal if it was able to drive sharks out

[@MsMoonDragoon]

@@420pbomb ah yes and I will go into your house and play loud screaching noises untill you leave.

[@jcamp434]

Interesting thoughts Karen

[@SharksHappen]

I also have huge doubts on effectiveness against large sharks, especially when charging. Great info every video i have watched!

[@SHARKBYTES]

Thanks for commenting Hal! Up for a collab soon? :D

[@amandarobinson5943]

Oh yeah you guys should!!!🦈🦈❤️❤️

[@wolfFaolan78]

Yes, we need collab.

[@embededfabrication4482]

but that's what I want, a false sense of security. for some reason, even though the chances are less than getting hit by lighting, I am skerd of sharks.

[@ericross3256]

Like to try one in a shark cage first around great whites and bigger sharks to make sure for myself...

[@SHARKBYTES]

Probably a safe bet first!

[@ronsteskool]

Size ,Hunger and opportunity matter for all predators . However these new devices are a great asset .

[@richardbrown125]

I need one

[@-Ghostess]

I probably wouldn't. I grew up swimming in the intercoastal off of Amelia Island (major nursery area of lots of game fish, and the birthplace of the modern shrimping industry) Every year you'll see scalloped and great hammerheads, tigers, sand tigers, tons of bullsharks, and at least 5 tagged great whites pass through each year. If you swim here, you are always at least 3 ft away from a shark when swimming, you just don't always see it unless you have the right angle. But most people born and raised here are less afraid of the sharks than they are of the goliath groupers.

[@alainvosselman9960]

I am thinking automated drones circling a surf or swim spot, able to spot various type sharks and signal to a home device. This device can be hooked to powerful horns blasting an alarm all over the beach for anyone to notice.. like a tsunami alarm but different. Combined with a supervisor maybe...

[@Max-kd2gh]

Here's another question, are there any smells or other such things that would more likely deter a shark? Probably something you might use in an emergency if you see a shark and then pop open the liquid that would "smell bad".

[@SHARKBYTES]

Funnily enough, one of the few "smells" known to occasionally deter sharks, is the smell of dead sharks. Although its yet to be fully tested and proven - so don't hold me to that!

[@jksinorbit]

The sounds of an Orca will make a shark piss its grey pants and literally leave the vicinity for years. Orca patterning on a surfboard less effective but still not bad.

[@-Ghostess]

When orca eat a white shark, the smell of the liver oils is such a major chemical detterant that all great whites that were supposed to migrate through the area that year/were feeding in the area literally fled overnight. It alters migration habits that are hardwired in their brains.

[@Franny90.]

@@SHARKBYTES I have also seen a documentary about sharks in rivers who are in close contact with crocodiles. Some scientists were wondering how they geht along and testet the smell of crocodiles and used that scent as an repellent against young bullsharks. I am so sorry that I don't know the name of the documentary anymore but I suppose you are way better at researching as I am anyway. 😊 Must have been something about bullsharks in rivers😅 Glad that I have discovered your channel. Thanks for your work and content.

[@IAmPaolo]

@@SHARKBYTES The show Mythbusters tried that out 7-8 years ago, using a concentrate of dead shark that was deployed in the waters after attracting sharks with bait/fish. The sharks lit out after the concentrate was released.

[@DevilsInRedArx]

Are sharks capable of "Learning" ? You've said before they think we taste bad so having this little thing with us would like accumulate to them like - The frequency of it = human = bad food. And over time sharks would avoid the kind of frequency and therefore humans who don't want to encounter sharks at free will surfing or swimming in the open waters.

[@SHARKBYTES]

Yeah I get you, sharks definitely are capable of learning, some have said faster than dogs can learn! One of the difficulties i suppose is that a shark doesn't know something tastes bad until it test bites it. The frequency thing would be interesting to look into, as sharks do have an inner ear capable of detecting sound!

[@stewyoung8523]

All they need to do to protect beaches is to put a fake Orca model anchored offshore with a speaker imitating their sounds.

[@SHARKBYTES]

Do we know it’s sound that is the deterrent for whites? Is it the smell of orca perhaps? Or the scent of blood from a white shark killed by an orca? Lots of different and interesting questions

[@stewyoung8523]

Great Whites have virtually disappeared in parts of South Africa where Orcas now patrol. Porpoises can also deter solitary sharks. We went out in the Florida keys and played the sound from a pod of dolphin and the sharks scattered while we were feeding them. I think scent, sound, and sight are factors that can be utilized. Just my opinion from what I've seen. Hate nets.

[@steve00alt70]

Your reviewing the weaker sharkbanz 1. The shark band 2 is more powerful. Wear them on every 4 limbs. Tiny fish produce magnetic fields anyway. The science says sharks cant detect it but tiny fish they can. You can also buy kevlar westsuits.

[@Travelingwithabbc]

Has anybody got lucky yet? If so, did they record the moment? I am curious if a shark missed a meal or is this just the good old great marketing on fear

[@edt5976]

If these shart repellant actually work then shouldn't they be made mandatory to surfer's and anyone who goes into the ocean?

[@ssfbob456]

I wonder if the effect is cumulative, like if one person wears one its not that effective, but if 100 are its more effective.

[@SHARKBYTES]

It would be interesting to see that tested!

[@Sharkbanz-Official]

This concept has been tested with magnetic barriers using simulated kelp forests. The results suggested that there is a cumulative effect.

[@galaxydragonet8722]

I'd honestly wear one, even a little bit of protection is better than no protection against sharks

[@SHARKBYTES]

Each to their own for sure

[@Kurtis11266]

look at the camera instead of the viewfinder

[@freeanimals594]

As usual, I'll avoid the oceans for many reasons, not just sharks! 🤣🦈

[@SHARKBYTES]

I couldn’t do it!! 😱😱

[@freeanimals594]

@@SHARKBYTES But you have great knowledge and training! I admire you for that.

[@andreyvlasenko3368]

Is it safer to have sharp stick with yourself while in the sea where shark encounter can happen?

[@carebear8762]

Without checking your entire back catalog, I assume you've read Capuzzo's "Close to Shore" about the NJ shark attacks? What did you think of it? I enjoyed how he gave the entire historical and social context of the time, which helps explain the reaction to the attacks. A vignette I was reminded of by you mentioning "sea dogs" in a previous video was some magnate betting he could dive into the sharks following his boat without coming to harm. A bet he won. Also the insistence of so many that "sharks are cowardly" so the attacker must have been a barracuda, or swordfish, anything but a shark. Anyway, as the kid who read every shark book available in the elementary school library back in the '70s (lot of bangstick hunting of nurse sharks, as I recall) I'd be interested in your take on some of the popular literature, and how it has evolved with our understanding of sharks.

[@jedbedrock2944]

Sounded cool, until the Bull Shark ate it. He could have swam by, but no, he had to eat it.

[@SHARKBYTES]

Hahaha that bull shark was like nope, not scared at all.

[@liliyakamala2348]

The reasoning they use for shark deterrents by statistics certainly must know that a broom would get better statistics than that…

[@lewishawkins5267]

I ain’t wearing one of them the shark ate it!

[@SHARKBYTES]

Bull shark was clearly not in the mood!

[@shipswithadam2038]

Batman 1966 is becoming a reality.

[@SHARKBYTES]

One of my favourite gifs of all time!

[@susanmirarchi7303]

I'm real late with this video, why can't they use a sound of orcas?

[@Clubnewcasino]

Doesn’t work on megalodons or dunkleosaurus. Tried doing it with a tiger shark but my hand got bitten off before the shark imploded due to the gravity Tek grenade built in the bracelet.

[@spirituellebuchermeditatio9264]

Airbubbles avoid sharks come to the shore, why they are not used to protect the people

[@bombsqaud558]

Well, i surf and have the ocean guardian. Ican tell you when you take off on steeper waves like Tombstones in the NW or Gas bay in the SW of Western Australia, if you get any air under your board you get one hell of a jolt. And its a sensation that you never get used to! I will be wearing shark banz for 2024 Rotto Channel swim. Id rather have something rather than nothing. Plus there will be more than 700 other like minded people swimming too so ill be sure to stay in the middle of the pack. Lol😂

[@whole10meters]

I don’t know why somebody does work out a way to get the sent of an orca into a shark repellent as we all know what happened when orcas moved in to Gansbaai, when the whites decided to relocate to avoid having their lovers removed…would the aroma of orcas, not do the same thing still? If I had the means and money to research this, I’d be all over it as it could potentially save lives both the sharks and humans too🤔

[@aranchilingar9086]

Imagine how many people you could save

[@tonyj9203]

*Batman's Shark spray!?*

[@MsFoxy-bo4uc]

I would not. Not only because $500 is alot of money and could go to something actually needed or bills, but I like to actually see a shark before I die. In a group.

[@aranchilingar9086]

If the algorithm leaves the water, it has no effectivity if you put a electronic emanation that has electromagnetic radiation of a certain frequency that acts upon the glands in the sharks nose, that perceive blood in the water, and will put it into a frenzy, and you can figure out the alternate algorithm to make a deterrent or a stun gun as it were, that’s wonderful but you won’t have enough electricity, or amperage to accomplish your means and less you have a landline and a giant pole sticking out of the water protecting the shoreline. If you know anything about electricity, you’ll know that’s true. And also, if you’re a little bracelet comes out of the water, your protection is gone! If you had the battery inside of the surfboard wired to the fins, which were the antenna, because the fins never leave the water, you might actually be able to save your ass otherwise no

[@matthall4222]

Science huh

[@SHARKBYTES]

Good ole Science!

[@HelloKitty60621]

i would only wear one if i was also physically protected by some sort of bite proof stuff

[@SHARKBYTES]

Always a little tricky surfing in chainmail hahaha

[@aranchilingar9086]

Imagine of how many people you could save and sharks and sea turtles and dolphins and I’ll see life?

[@cloudguru3018]

I think spear gun and sharp large knife are better deterrents

[@benward837]

I grew up in FL I've swam with hundreds of sharks in the water lol most of the time they do t give a F about humans

[@SHARKBYTES]

Very true, they do tend to keep themselves to themselves 95% of the time!

[@benward837]

@@SHARKBYTES my favorite shark growing up was the nurse shark they are usually so docile and cool to look at

[@SHARKBYTES]

@@benward837 Love the nurse sharks, i'm writing a publication on them as we speak!

[@tobypurvis910]

I wouldn’t wear one

[@SHARKBYTES]

Is that because you WANT to see sharks ;)?

[@kylehill4437]

They do not work several videos of testing from different people...to the point in one video where the shark actually grabs the band lol

[@spyguy888]

Maybe Batman had the better idea…

[@kennybruce2597]

is there any truth to the spilling a great white sharks guts driving off all sharks in an area?

[@amandarobinson5943]

🦈🦈🦈

[@blank3097]

Booooooo. I was just checking them out wondering what they were

[@kyleglasco6695]

It's stupid easy to make it work. Electrodynamics, so easy. Give me ten million and I'll give my patent.

[@SHARKBYTES]

I’ll just pop to the bank

[@blakeskud6378]

Hey I know the people who never swim or surf near any beach. Want netting and drum lining gone. But there has been 1 fatality since 1937 on controlled beaches in Queensland. When uncontrolled beaches average around 20 a year In Australia.

[@kyleglasco6695]

Hit me up.

[@tomsimpson2860]

First

[@SHARKBYTES]

My G

[@MiguelXTulio]

IDK why people would waste their money on these. Just bring your cans of bat shark repellent >.>

[@Dipp182]

How much is that? Is it more expensive than my needed blinker fluid?

[@theldraspneumonoultramicro405]

shark repelent? kzbin.info/www/bejne/oZClkKFjh8elpdU

[@SHARKBYTES]

Hahahah always loved this scene

[@Beautiful_Sound_1995]

Best shark repellent is your brain and not being an asshole in the water.

[@CarYouTuberNews]

Shark repellents are horse shit.

[@veiledallegory]

The shark repellents could also alter shark behavior and severely disrupt their natural movements and possibly interrupt their breeding habits causing extreme damage to the shark populations. All so some rich kids can surf.

[@benmallahsstockbroker3752]

No