THE SCIENCE

Technology 2018-05-01T19:30:39+00:00

Shark Shield® Technology

Sharks have short-range electrical receptors in their snouts used for finding food, Shark Shield’s patented technology creates a powerful three-dimensional electrical field which causes unbearable spasms in these sensitive receptors turning sharks away, including Great Whites. In 1995, it was discovered that sharks have a heightened sensitivity to close-range, low frequency electrical fields. Two decades of intensive global research has developed this knowledge into a reliable and essential piece of equipment that protects visitors to the ocean and the sharks that live there.


Shark Shield consists of two electrodes which, when both are submerged, emit a three-dimensional electronic field that surrounds the user. When a shark comes within a few meters of the Shark Shield, the strong electronic pulses emitted by the device cause the shark to experience muscle spasms.

Non-evasive protection

This does NOT harm the shark in any way, but merely causes it to experience a high level of discomfort. From testing, the closer the shark is to the Shark Shield field, the more spasms occur in the sharks’ snouts, which results in it turning away from the electronic field, thereby protecting the user.

Scientifically proven protection
from sharks. Nothing is more effective.

FACT 1

Shark Shield almost
100% effective as a
shark deterrent

THE STUDY

How Close is too Close? The Effect of a Non-Lethal Electric
Shark Deterrent on White Shark Behaviour

Ryan M. Kempster, Channing A. Egeberg, Nathan S. Hart, Laura Ryan, Lucille Chapuis Caroline C. Kerr, Carl Schmidt, Charlie Huveneers, Enrico Gennari, Karak E. Yopak, Jessica J. Meeuwig, Shaun P. Collin. University of Western Australia Ocean Institute.

The study analyzed 322 encounters involving 41 individual white sharks, ranging from 2m to 4m long. Upon first encounter with a Shark Shield, all approaching great white sharks were effectively deterred, staying an average of 1.3m away from a baited canister with the device attached.

After multiple approaches, individual great white sharks came an average of 12cm closer on each successive approach. Only one great white shark came into contact with the bait in the presence of an active Shark Shield, and only after multiple approaches. The interaction in question simply involved a bump of the bait canister rather than a full bite. In contrast, bites were common during control trials.

For detailed information on this peer reviewed research you can download and read full research paper from PLOS ONE here

  1. Shark Shield effectively deterred sharks from interacting with the bait
  2. Shark Shield does not attract sharks
FACT 2

Shark Shield effectively
reduces the probability
of shark attack

THE STUDY

Estimating the probability of a shark attack when using an electric repellent

C F Smit, Department of Statistics, University of Pretoria, Pretoria, 0002, South Africa and V Peddemors, Department of Zoology, University of Durban-Westville, Durban, 4000 South Africa

For detailed information you can download and read C F Smit & Peddemors Electric Repellent full research paper.

  1. The probability of an attack was reduced from 0.70 to about 0.08
  2. Shark Shield prevented the sharks from feeding off the bait
FACT 3

Shark Shield effectively
deters white sharks
attacking seal decoy

THE STUDY

Effects of the Shark Shield electric deterrent on the behaviour of white sharks

C. Huveneers, P.J. Rogers, J. Semmens, C. Beckmann, A.A. Kock, B. Page & S.D. Goldsworthy

For detailed information you can download and read Effects of an Electric Field on White Sharks full research paper.

The Huveneers’ study tested Shark Shield as a deterrent against a shark attack, finding that:

  1. Shark Shield significantly increased the time it took the sharks to take the bait.
  2. Shark Shield deterred sharks attacking a seal decoy.
  3. Shark Shield does not attract sharks.
FACT 4

Shark Shield does not
attract sharks

THE STUDY

Electroreception in vertebrates and invertebrates Collins S.P. (2010) In: Breed M.D. and
Moore J., (eds) Encyclopedia of Animal Behavior, volume 1, pp. 611 – 620 Oxford:
Academic Press

This research by Collins proves that Shark Shield’s electrical impulses do not attract sharks: “It is true that the electroreceptive system is extremely sensitive (in the µV range). However, in practical terms and this has been born out in many behavioral tests, the electroreceptive system is a relatively short distance sense often working in the 30-60cm range. Since these animals use this sense to detect the presence of living prey items that may not be otherwise detected (i.e. under the substrate), they are really working at their detection limits. Therefore, although theoretically the Ampullae of Lorenzini can detect very low strength electric fields, they do not use them to track animate objects over these long distances.

Scientific Research so you can experience more

Ocean Guardian’s independently tested technology, nothing is more effective. It’s changed the way we manage human
and shark interactions. Shark Shield Technology turns sharks away so you can experience more. The ocean becomes your
playground.

For more information on our rigorous scientific process, please review the published scientific and independent
research and you can also download and view the Shark Shield White Paper which discusses the history behind electronic shark
deterrents.

The Ultimate Ocean Guardian

Shark Shield safety products are trusted by surfers, divers and ocean lovers around the world and are recommended safety equipment in professional industries such navies and abalone diving.

With no known permanent harm to sharks the products directly support shark conservation by removing the need for culling or lethal means of enabling humans and sharks to share our oceans; the ultimate ocean guardian.

Scientifically Proven & Independently Tested

When you use a Shark Shield you are supported by the credibility and belief of some of the worlds leading oceanic organizations including the KwaZulu-Natal Sharks Board in South Africa, the University of Western Australia Ocean Institute and Flinders University.

You can review peer reviewed published papers in our Scientific Research section. As a result of continuous research and investment over the past twenty years, Shark Shield has lodged numerous patents relating to electrical shark deterrents.

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HOW IT WORKS
THE FACTS
CREDIBILITY

HOW IT WORKS

Shark Shield® Technology

Sharks have short-range electrical receptors in their snouts used for finding food, Shark Shield’s patented technology creates a powerful three-dimensional electrical field which causes unbearable spasms in these sensitive receptors turning sharks away, including Great Whites. In 1995, it was discovered that sharks have a heightened sensitivity to close-range, low frequency electrical fields. Two decades of intensive global research has developed this knowledge into a reliable and essential piece of equipment that protects visitors to the ocean and the sharks that live there. Shark Shield consists of two electrodes which, when both are submerged, emit a three-dimensional electronic field that surrounds the user. When a shark comes within a few meters of the Shark Shield, the strong electronic pulses emitted by the device cause the shark to experience muscle spasms.

Non-evasive protection

This does NOT harm the shark in any way, but merely causes it to experience a high level of discomfort. From testing, the closer the shark is to the Shark Shield field, the more spasms occur in the sharks’ snouts, which results in it turning away from the electronic field, thereby protecting the user.

Scientifically proven protection from sharks. Nothing is more effective.

BACK TO TOP

THE FACTS

FACT 1

Shark Shield almost 100% effective as a shark deterrent

THE STUDY How Close is too Close? The Effect of a Non-Lethal Electric Shark Deterrent on White Shark Behaviour

Ryan M. Kempster, Channing A. Egeberg, Nathan S. Hart, Laura Ryan, Lucille Chapuis Caroline C. Kerr, Carl Schmidt, Charlie Huveneers, Enrico Gennari, Karak E. Yopak, Jessica J. Meeuwig, Shaun P. Collin. University of Western Australia Ocean Institute. The study analyzed 322 encounters involving 41 individual white sharks, ranging from 2m to 4m long. Upon first encounter with a Shark Shield, all approaching great white sharks were effectively deterred, staying an average of 1.3m away from a baited canister with the device attached.

After multiple approaches, individual great white sharks came an average of 12cm closer on each successive approach. Only one great white shark came into contact with the bait in the presence of an active Shark Shield, and only after multiple approaches. The interaction in question simply involved a bump of the bait canister rather than a full bite. In contrast, bites were common during control trials.

For detailed information on this peer reviewed research you can download and read full research paper from PLOS ONE here

  1. Shark Shield effectively deterred sharks from interacting with the bait
  2. Shark Shield does not attract sharks

FACT 2

Shark Shield effectively reduces the probability of shark attack

THE STUDY Estimating the probability of a shark attack when using an electric repellent

C F Smit, Department of Statistics, University of Pretoria, Pretoria, 0002, South Africa and V Peddemors, Department of Zoology, University of Durban-Westville, Durban, 4000 South Africa For detailed information you can download and read C F Smit & Peddemors Electric Repellent full research paper.

  1. The probability of an attack was reduced from 0.70 to about 0.08
  2. Shark Shield prevented the sharks from feeding off the bait

FACT 3

Shark Shield effectively deters white sharks attacking seal decoy

THE STUDY Effects of the Shark Shield electric deterrent on the behaviour of white sharks

C. Huveneers, P.J. Rogers, J. Semmens, C. Beckmann, A.A. Kock, B. Page & S.D. Goldsworthy For detailed information you can download and read Effects of an Electric Field on White Sharks full research paper. The Huveneers’ study tested Shark Shield as a deterrent against a shark attack, finding that:

  1. Shark Shield significantly increased the time it took the sharks to take the bait.
  2. Shark Shield deterred sharks attacking a seal decoy.
  3. Shark Shield does not attract sharks.

FACT 4

Shark Shield does not attract sharks

THE STUDY Electroreception in vertebrates and invertebrates Collins S.P. (2010) In: Breed M.D. and Moore J., (eds) Encyclopedia of Animal Behavior, volume 1, pp. 611 – 620 Oxford: Academic Press

This research by Collins proves that Shark Shield’s electrical impulses do not attract sharks: “It is true that the electroreceptive system is extremely sensitive (in the µV range). However, in practical terms and this has been born out in many behavioral tests, the electroreceptive system is a relatively short distance sense often working in the 30-60cm range. Since these animals use this sense to detect the presence of living prey items that may not be otherwise detected (i.e. under the substrate), they are really working at their detection limits. Therefore, although theoretically the Ampullae of Lorenzini can detect very low strength electric fields, they do not use them to track animate objects over these long distances.

Scientific Research so you can experience more

Ocean Guardian’s independently tested technology, nothing is more effective. It’s changed the way we manage human and shark interactions. Shark Shield Technology turns sharks away so you can experience more. The ocean becomes your playground. For more information on our rigorous scientific process, please review the published scientific and independent research and you can also download and view the Shark Shield White Paper which discusses the history behind electronic shark deterrents.
BACK TO TOP

CREDIBILITY

The Ultimate Ocean Guardian

Shark Shield safety products are trusted by surfers, divers and ocean lovers around the world and are recommended safety equipment in professional industries such navies and abalone diving.

With no known permanent harm to sharks the products directly support shark conservation by removing the need for culling or lethal means of enabling humans and sharks to share our oceans; the ultimate ocean guardian.

Scientifically Proven & Independently Tested

When you use a Shark Shield you are supported by the credibility and belief of some of the worlds leading oceanic organizations including the KwaZulu-Natal Sharks Board in South Africa, the University of Western Australia Ocean Institute and Flinders University. You can review peer reviewed published papers in our Scientific Research section. As a result of continuous research and investment over the past twenty years, Shark Shield has lodged numerous patents relating to electrical shark deterrents.
BACK TO TOP