THE SCIENCE

Technology2018-10-02T19:59:11+00:00

Shark Shield® Technology

All sharks have highly sensitive electrical receptors located in their snouts called the ‘ampullae of Lorenzini’. Used for finding food, they sense tiny electrical currents from prey less than a metre away. (Over longer distances, they use their sense of smell, sight, and hearing).

Ocean Guardian’s patented technology consists of two electrodes which when submerged, create a powerful three-dimensional electrical field. When a shark comes within a few metres of your Ocean Guardian product, the strong electrical pulses emitted by the device cause the shark to experience safe but unbearable spasms in their sensitive electrical receptors, turning the shark 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 visitor to the ocean and the sharks that live there.

Safe for you. Safe for sharks.

Ocean Guardian products do 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.

When used properly, the field generated by your Ocean Guardian poses no known danger to the user, to sharks or to the environment. You can read more about that here.

Powered by innovation. Backed by Science.

Ocean Guardian products are backed by years of independent scientific research and testing. But don’t take our word for it. Explore testing and research papers here and via the FACTS and CREDIBILITY tabs on this page.

FACT 1

“Shark Shield almost
100% effective as a
shark deterrent”

Australian Geographic

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

The FREEDOM+ Surf is proven
to deter Great Whites

THE STUDY

Response of white sharks exposed to newly developed personal shark deterrents

C Huveneers, S Whitmarsh, M Thiele, C May, L Meyer, and CJA Bradshaw of College of Science and Engineering, Flinders University, Adelaide, South Australia and A Fox of Fox Shark Research Foundation, Adelaide, South Australia

The independent study completed in late 2017 and early 2018, tested five shark deterrents developed for surfers on white sharks and found that:

  1. In extreme conditions – chummed and baited waters – the FREEDOM+ Surf reduced the percentage of bait taken from 96% to 40%.
  2. Other deterrents tested had limited or no effect on white sharks.

Download the full research paper here.

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.

FACT 5

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.

Technology with teeth.

Ocean Guardian’s scientifically proven and independently tested technology, has 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 here and you can also download and view the Shark Shield White Paper which discusses the history behind electronic shark
deterrents.

Scientifically proven. Independently tested. 

Over the last 20 years, we have worked tirelessly with the world’s leading shark experts (including  KwaZulu-Natal Ssuch navies harks Board in South Africa, the University of Western Australia Ocean Institute, and Flinders University), to perfect a proven, powerful way to ensure the ocean could be shared – safely and in harmony with nature.

The bulk of the independent scientific research on Ocean Guardian products over the past 20-years has been conducted on Great White Sharks in both South Africa and South Australia, in all these tests Ocean Guardian was proven effective in deterring Great White Sharks. Other sharks tested and repelled by Ocean Guardian include Tigers, Zambezi (Bull), Mako, Oceanic, and Hammerhead sharks.

Nothing is more effective than Ocean Guardian, powered by Shark Shield Technology.  But don’t take our word for it. Explore independent tests and research papers here.

Technology with teeth.

Our technology is so effective that in Western Australia, the State Government has a $200 rebate available for the purchase of our FREEDOM+ Surf and FREEDOM7.

In fact, Ocean Guardian is the only shark deterrent manufacturer with products approved to be included on the rebate program. Click here for full details on the rebate program.

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

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HOW IT WORKS
THE FACTS
CREDIBILITY

HOW IT WORKS

Shark Shield® Technology

All sharks have highly sensitive electrical receptors located in their snouts called the ‘ampullae of Lorenzini’. Used for finding food, they sense tiny electrical currents from prey less than a metre away. (Over longer distances, they use their sense of smell, sight, and hearing).

Ocean Guardian’s patented technology consists of two electrodes which when submerged, create a powerful three-dimensional electrical field. When a shark comes within a few metres of your Ocean Guardian product, the strong electrical pulses emitted by the device cause the shark to experience safe but unbearable spasms in their sensitive electrical receptors, turning the shark 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 visitor to the ocean and the sharks that live there.

Safe for you. Safe for sharks.

Ocean Guardian products do 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. When used properly, the field generated by your Ocean Guardian poses no known danger to the user, to sharks or to the environment. You can read more about that here.

Powered by innovation. Backed by Science.

Ocean Guardian products are backed by years of independent scientific research and testing. But don't take our word for it. Explore testing and research papers here and via the FACTS and CREDIBILITY tabs on this page.
BACK TO TOP

THE FACTS

FACT 1

"Shark Shield almost 100% effective as a shark deterrent"

Australian Geographic

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

The FREEDOM+ Surf is proven to deter Great Whites

THE STUDY

Response of white sharks exposed to newly developed personal shark deterrents

C Huveneers, S Whitmarsh, M Thiele, C May, L Meyer, and CJA Bradshaw of College of Science and Engineering, Flinders University, Adelaide, South Australia and A Fox of Fox Shark Research Foundation, Adelaide, South Australia

The independent study completed in late 2017 and early 2018, tested five shark deterrents developed for surfers on white sharks and found that:

  1. In extreme conditions – chummed and baited waters - the FREEDOM+ Surf reduced the percentage of bait taken from 96% to 40%.
  2. Other deterrents tested had limited or no effect on white sharks.
Download the full research paper here.

FACT 5

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.

Technology with teeth.

Ocean Guardian’s scientifically proven and independently tested technology, has 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 here and you can also download and view the Shark Shield White Paper which discusses the history behind electronic shark deterrents.
BACK TO TOP

CREDIBILITY

Scientifically proven. Independently tested.

Over the last 20 years, we have worked tirelessly with the world’s leading shark experts (including  KwaZulu-Natal Sharks Board in South Africa, the University of Western Australia Ocean Institute, and Flinders University), to perfect a proven, powerful way to ensure the ocean could be shared – safely and in harmony with nature.

The bulk of the independent scientific research on Ocean Guardian products over the past 20-years has been conducted on Great White Sharks in both South Africa and South Australia, in all these tests Ocean Guardian was proven effective in deterring Great White Sharks. Other sharks tested and repelled by Ocean Guardian include Tigers, Zambezi (Bull), Mako, Oceanic, and Hammerhead sharks.

Nothing is more effective than Ocean Guardian, powered by Shark Shield Technology.  But don’t take our word for it. Explore independent tests and research papers here.

Technology with teeth.

Our technology is so effective that in Western Australia, the State Government has a $200 rebate available for the purchase of our FREEDOM+ Surf and FREEDOM7.

In fact, Ocean Guardian is the only shark deterrent manufacturer with products approved to be included on the rebate program. Click here for full details on the rebate program.

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

BACK TO TOP