Sharkbanz Midnight Bimini Shark Deterrent

Sharkbanz 2 - The Magnetic Shark Repellent Bracelet

We all know that sharks are incredible hunters. Swimmers, scuba divers, spear fishermen and snorkelers have been using various shark repellents for decades.

In this review, we look at why and how magnetic shark repellent bracelets such as Sharkbanz work, and their effectiveness against different sharks and other sea creatures. 

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Do magnetic shark repellent bands really work?

The theory of magnets functioning as shark repellents has been extensively studied, researched and tested since it was first discovered.

Sharkbanz Magnetic Shark Deterrent

Sharks are such efficient hunters as they are able to detect very weak signals (such as the heartbeats or muscle movements) given out by their prey. This natural ability also helps them to hunt and navigate at night, or when they're in murky water.

Sharkbanz Active Shark Deterrent -Surf-Swim-Triathalon

Shark repellents such as Sharkbanz have been developed to send out strong magnetic fields. Electro-magnetism overwhelms the electro-receptors that sharks use to hunt. This confuses the shark and effectively blinds it, vastly reducing the chances of an attack.

Sharkbanz Wrist Midnight Bimini

The makers of Sharkbanz liken it to us standing in a dark room and having a bright light suddenly shone in our eyes - it doesn't hurt, but you will want to turn away.

Sharkbanz Marine Slate Surf Ankle

As a shark approaches the shark repellent band bracelet, it detects these signals. These signals are far greater than anything a shark will have encountered before, and a lot stronger than anything produced in their natural food chain.

The field produced is about 3 to 6 feet (or 1 to 1.8 meters). It's an unpleasant sensation for the shark that becomes intense at around 3 feet, and then exponentially greater with each inch the closer it gets.

Sharkbanz versus Sharkbanz 2 - What's the difference?

The first version of the Sharkbanz bracelet was released on January 1, 2015. Since then, the makers of Sharkbanz have continued to study, evolve and test this technology in collaboration with the founders and leaders of shark repelling science and technology.

Sharkbanz 2 has been released and is more powerful with a higher magnetic strength than the original version. This also has a lower profile and a more comfortable silicone band. The clasp has been improved and is a matte coated stainless steel buckle.

Sharkbanz 2 has a sealed magnetic chassis giving it better durability and zero rust. A big plus is the price difference - Sharkbanz 2 is retailing for much cheaper than its predecessor.

Sharkbanz Active Shark Deterrent
Sharkbanz Midnight Bimini
Sharkbanz Active Shark Deterrent Ankle Bracelet

Should you buy just one, or multiples?

The Sharkbanz bracelet can be worn on either your ankle or wrist. The majority of shark bites occur on the ankle and leg areas so if you're only buying one, it's recommended it be worn on the ankle.

Just like many other safety devices, the greater the coverage, the greater the protection. The electromagnetic field generated by one Sharkbanz will help reduce the risk, but it doesn't act as a full-body force field.

If you are in regions of high shark populations (such as Florida, California, Hawaii, North Carolina, Australia and other areas of the Pacific) or spend a lot of time in the ocean, then it's recommended that you wear multiple Sharkbanz - one on your wrist and one on your ankle.

Shark Repellent Bands versus Bull Sharks

Due to their naturally aggressive behavior and tendency to live in waters close to shore, Bull Sharks are considered to be one of the most dangerous sharks to humans.

Below is a video showing how effective the Sharkbanz can be in a baited scenario with Bull Sharks. This is an amazing video and really worth watching.

Sharkbanz Wrist Midnight Bimini


Much like seat belts or bike helmets, Sharkbanz will reduce the risk of harm, but they do not provide total coverage.

Sharkbanz is not tested on all types of sharks. Although Sharkbanz can reduce the risk of contact with sharks, it can't guarantee 100% that no contact will occur.

Important things to know about Sharkbanz

Both purchasers and wearers of Sharkbanz need to understand that sharks are wild animals and can have unpredictable behavior.

Sharks are naturally curious animals. You should never do anything that deliberately provides a stimulus to sharks to make them want to come into contact with humans, regardless of whether you're wearing Sharkbanz, or not.

Use common sense whenever you're in the water. Avoid swimming near piers or anywhere where folks are fishing. Always be careful in the water at dawn and dusk, and especially at night.

Sharkbanz Marine Slate Surf Ankle

Great White Sharks

The Sharkbanz magnetic technology has been successfully tested on a wide variety of predatory shark species including Bull Sharks, Blacktip, and Great White Sharks.


Sharkbanz can reduce the risk of a curious, investigative Great White shark encounter, especially when wearing multiple units to increase the deterrent field range, but there's no glossing over this - Sharkbanz can't completely eliminate the threat of a Great White.

Sharkbanz 2 vs Shark Shield

Sharkbanz Magnetic Shark Repellent - Does it work

Sharkbanz uses magnetic technology to ward off sharks, and this is a magnet it will never lose its charge. It can be worn on the ankle or wrist, and it's recommended you wear one on each if possible. The Sharkbanz costs around $80 USD each.

The Shark Shield Freedom7 shark repellent is strapped to the ankle and has an antenna that drags behind the wearer. It has 2 electrodes which emit electrical pulses when turned on and submerged. Freedom7 is powered by an Lithium-ion battery and requires charging. The Freedom7 costs around $600 USD, and has been proven to deter Great Whites.

Great things about Sharkbanz 2

Sharkbanz has been created to provide some protection from many sharks where previously there was none. Sharkbanz technology will also deter stingrays. The technology is not known to harm any other ocean creatures such as fish, dolphins or sea turtles.

As these are magnetic, there is no battery and no charging required. Sharkbanz 2 is always ON and ready to go.



Sharkbanz Midnight Bimini Dive Spearfish
Sharkbanz Shark Deterrent for Swimmers Slate

Sharkbanz is a universal fit and can be adjusted to be worn from Ages 5+ on either an ankle or wrist (or both).

These are airline and travel safe. The TSA will not give you any trouble over your Sharkbanz 2. Make sure you always travel with it stored in its Sharkbanz box as this is magnetic shielded. This goes for traveling with it in both checked luggage or in carry-on bags.

The price of the Sharkbanz 2 is much lower in comparison to the original version. This makes it more affordable when buying more than one. 

Does One Size really fit all?

Yes it does.

The makers of Sharkbanz initially looked into making multiple sizes of the Sharkbanz 2. They weighed up the environmental impact of making one with a long strap and throwing the excess in the trash, against the carbon footprint created by transporting multiples sizes with the likelihood of returns due to the incorrect size being selected when purchased. 

The result is that the Sharkbanz 2 has been designed to fit everyone from age 5+. The band comes long enough to go over a wetsuit and be cut down to the correct size.

Sharkbanz Active Shark Deterrent -Wrist on Surfer

Full instructions on how to cut this done correctly are included in the packaging.

Sharkbanz Active Shark Deterrent -Whats in the box

Magnetism and other Electronic Devices

Sharkbanz uses powerful magnetic technology to repel sharks.  Magnetism can damage electronics and medical devices, as well as some watches and scuba equipment including dive computers. Sharkbanz needs to be kept at least 12 inches (or 30 cm) away from these devices.

If you are handling electronic equipment or dive computers, put the Sharkbanz on your ankles to avoid direct contact with the electronics.

Make sure Sharkbanz is stored in its box when traveling or when not in use to protect electronics, as the box has magnetic shielding.

General Care and Maintenance

Salt water and sand will corrode just about anything over time, so always thoroughly wash your Sharkbanz after swimming in salt water. Once dry, keep it in the Sharkbanz box and out of direct sunlight.

Don't leave it in the car as temperatures can get too hot when in the sun which will cause damage. Never leave it anywhere where temperatures reach over 130º Fahrenheit (or 55º Celcuis).

As it's magnetized, Sharkbanz 2 can pull fine ferrous (iron) particles from the sand which will stick to it. These will not damage the Sharkbanz but should be brushed off as soon as you notice them.

Sharkbanz Active Shark Deterrent -Care and Maintenance

Real Sharkbanz Testimonials by Real People

Real Sharkbanz Testimonials by Real People

Real Sharkbanz Testimonials by Real People

Sharkbanz-Testimonial-Daniel-R
Sharkbanz-Testimonials

Ready to Buy a Sharkbanz or two?

Sharkbanz 2 is an improvement in a number of areas on the original Sharkbanz. This is shark deterrent technology that is effective, simple, affordable and stylish. 

Sharkbanz Magnetic Shark Repellent -Buy Now from Sharkbanz

Important things to know about Sharkbanz

Sharkbanz Wrist Midnight Bimini

Both purchasers and wearers of Sharkbanz need to understand that sharks are wild animals and can have unpredictable behavior.

Sharks are naturally curious animals. You should never do anything that deliberately provides a stimulus to sharks to make them want to come into contact with humans, regardless of whether you're wearing Sharkbanz, or not.

Use common sense whenever you're in the water. Avoid swimming near piers or anywhere where folks are fishing. Always be careful in the water at dawn and dusk, and especially at night.

Much like seat belts or bike helmets, Sharkbanz will reduce the risk of harm, but they do not provide total coverage.

Sharkbanz is not tested on all types of sharks. Although Sharkbanz can reduce the risk of contact with sharks, it can't guarantee 100% that no contact will occur.

Sharkbanz Marine Slate Surf Ankle

Sharkbanz 2 vs Shark Shield

Sharkbanz Magnetic Shark Repellent - Does it work

Sharkbanz uses magnetic technology to ward off sharks, and this is a magnet it will never lose its charge. It can be worn on the ankle or wrist, and it's recommended you wear one on each if possible. The Sharkbanz costs around $80 USD each.

The Shark Shield Freedom7 shark repellent is strapped to the ankle and has an antenna that drags behind the wearer. It has 2 electrodes which emit electrical pulses when turned on and submerged. Freedom7 is powered by an Lithium-ion battery and requires charging. The Freedom7 costs around $600 USD, and has been proven to deter Great Whites.

Great things about Sharkbanz 2

Sharkbanz Shark Deterrent for Swimmers Slate

Sharkbanz has been created to provide some protection from many sharks where previously there was none. Sharkbanz technology will also deter stingrays. The technology is not known to harm any other ocean creatures such as fish, dolphins or sea turtles.

As these are magnetic, there is no battery and no charging required. Sharkbanz 2 is always ON and ready to go.

Sharkbanz Midnight Bimini Dive Spearfish

Sharkbanz is a universal fit and can be adjusted to be worn from Ages 5+ on either an ankle or wrist (or both).

These are airline and travel safe. The TSA will not give you any trouble over your Sharkbanz 2. Make sure you always travel with it stored in its Sharkbanz box as this is magnetic shielded. This goes for traveling with it in both checked luggage or in carry-on bags.

The price of the Sharkbanz 2 is much lower in comparison to the original version. This makes it more affordable when buying more than one. 

Does One Size really fit all?

Yes it does.

The makers of Sharkbanz initially looked into making multiple sizes of the Sharkbanz 2. They weighed up the environmental impact of making one with a long strap and throwing the excess in the trash, against the carbon footprint created by transporting multiples sizes with the likelihood of returns due to the incorrect size being selected when purchased. 

The result is that the Sharkbanz 2 has been designed to fit everyone from age 5+. The band comes long enough to go over a wetsuit and be cut down to the correct size.

Sharkbanz Active Shark Deterrent -Wrist on Surfer

Magnetism and other Electronic Devices

Sharkbanz Active Shark Deterrent -Whats in the box

Sharkbanz uses powerful magnetic technology to repel sharks.  Magnetism can damage electronics and medical devices, as well as some watches and scuba equipment including dive computers. Sharkbanz needs to be kept at least 12 inches (or 30 cm) away from these devices.

If you are handling electronic equipment or dive computers, put the Sharkbanz on your ankles to avoid direct contact with the electronics.

Make sure Sharkbanz is stored in its box when traveling or when not in use to protect electronics, as the box has magnetic shielding.

General Care and Maintenance

Sharkbanz Active Shark Deterrent -Care and Maintenance

Salt water and sand will corrode just about anything over time, so always thoroughly wash your Sharkbanz after swimming in salt water. Once dry, keep it in the Sharkbanz box and out of direct sunlight.

Don't leave it in the car as temperatures can get too hot when in the sun which will cause damage. Never leave it anywhere where temperatures reach over 130º Fahrenheit (or 55º Celcuis).

As it's magnetized, Sharkbanz 2 can pull fine ferrous (iron) particles from the sand which will stick to it. These will not damage the Sharkbanz but should be brushed off as soon as you notice them.

About The Author

Sharon McKenzie loves spending time in and on the water. She is a keen snorkeler and stand up paddle boarder, and being lucky enough to live in the tropics means she gets to do this for most of the year. Read read more about Sharon on our About Us page.  

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About the site

I'm Sharon McKenzie and I’ve always loved spending time in and around water - which is not always easy when you live in Darwin. Living in the Northern Territory certainly poses some interesting challenges.

I enjoy swimming, snorkeling and Stand Up Paddle Boarding, and the weather in the Top End lets me do this year round.  

Darwin and the Top End of Australia is such a unique place. Many Aussies who usually travel overseas are exploring Australia at the moment.

I hope that if you're planning on visiting the Top End, that you'll find some useful information on this site so that your adventures are fun, safe and enjoyable.

Sharon McKenzie

Sharon McKenzie
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