When it comes to sharing the ocean safely with sharks, not all protection is created equal. Two fundamentally different approaches exist, shark deterrence and shark bite resistance , and understanding the difference could change how you think about your safety in the water.
At Shark Stop, we believe in coexistence. Sharks are vital to healthy ocean ecosystems, and our goal has never been to keep them away or to demonise them. Our goal is to give ocean users the confidence to share the water with sharks, knowing that if an interaction does occur, they are protected by the best available science.
What is a Shark Deterrent?
Shark deterrents are devices designed to discourage sharks from approaching a person in the water. They typically work through one of several mechanisms, electromagnetic fields, visual patterns, or acoustic signals, that sharks find uncomfortable or confusing, encouraging them to swim away.
Deterrents come in several forms. Electronic devices emit electromagnetic fields that interfere with sharks' electroreceptors, the sensory organs sharks use to detect the bioelectric fields of prey. Patterned wetsuits and surfboard decals use visual cues designed to make the wearer appear less like prey. Some products claim to use chemical or acoustic signals to the same end.
Deterrents can be effective at reducing the likelihood of an interaction in some circumstances. Independent research has shown that certain electronic deterrent devices can reduce interactions with some shark species. However, there are important limitations to understand.
Deterrents work by influencing shark behaviour, and shark behaviour, like that of any wild animal, is not entirely predictable. A shark that is highly motivated, by curiosity, hunger, or a startled response, may not respond to a deterrent in the way you hope. Effectiveness can vary significantly between shark species, water conditions, and individual animals. No deterrent device offers a guarantee.
There is also a practical consideration. Deterrents add complexity, devices need to be charged, attached, and maintained. If a device fails, runs out of battery, or is forgotten at home, protection is lost entirely.
What is Shark Bite Resistance?
Shark bite resistance takes a fundamentally different approach. Rather than attempting to change shark behaviour, bite-resistant technology focuses on what happens if an interaction does occur, and ensures the outcome is survivable.
Shark Stop wetsuits are built using Ultra-High Molecular Weight Polyethylene, known as UHMWPE, one of the strongest materials on earth, used in aerospace engineering, ballistic protection, and medical implants. When woven into wetsuit fabric, UHMWPE fibres create a material that shark teeth cannot penetrate.
This is not a claim, it is peer-reviewed science. Our fabric has been independently tested on live Great White and Tiger Sharks in collaboration with Professor Charlie Huveneers and Flinders University. The research, published in a peer-reviewed scientific journal, confirmed a 100% reduction in critical injuries when tested against Tiger Sharks. You can read the full science behind our technology on our Science page.
The key distinction is this: bite-resistant protection does not depend on shark behaviour. It does not need to influence what a shark does. It simply ensures that if contact occurs, the fabric stops the bite from causing critical injury. The protection works regardless of species, conditions, or the individual animal's motivation.
Why the Difference Matters
Both approaches have a role to play in ocean safety, and they are not mutually exclusive. Many ocean users choose to combine multiple layers of protection, a deterrent device alongside a bite-resistant wetsuit, for added peace of mind.
However, when evaluating your options, it is worth asking one fundamental question: what happens if the deterrent does not work?
For surfers, divers, and spearfishers who spend significant time in the water, particularly in regions with higher shark populations such as South Australia, Western Australia, and New South Wales, that question matters. Critical injuries from shark interactions are primarily caused by the depth of the bite and the resulting damage to blood vessels and tissue. This is precisely what bite-resistant fabric is designed to prevent.
Leading causes of fatality in shark interactions include haemorrhaging and tissue loss. Shark Stop's peer-reviewed research specifically demonstrates a 100% reduction in critical injuries, meaning the fabric prevents the bite from reaching the depth at which these life-threatening injuries occur.
The Coexistence Perspective
It is worth noting that neither approach harms sharks. Shark Stop wetsuits do not repel, injure, or distress sharks in any way. If contact occurs, the shark interacts with the wetsuit fabric, nothing more. The animal is unharmed.
This matters to us because sharks are not enemies. They are essential parts of the ocean ecosystem, and the waters we love to surf, dive, and explore belong to them as much as to us. Our mission has always been to promote coexistence, to give people the confidence to share the ocean without fear, while ensuring that sharks are respected and protected.
Deterrents and bite-resistant protection both reflect this philosophy in different ways. Deterrents attempt to prevent the interaction entirely. Bite resistance ensures that if an interaction does occur, it does not end in tragedy for the human involved, while leaving the shark unharmed.
Which Solution is Right for You?
The right choice depends on how, where, and how often you enter the water.
If you surf occasionally at a patrolled beach with drone surveillance, a deterrent device may provide adequate peace of mind for your needs. If you spearfish in remote South Australian waters, freedive in areas known for Great White activity, or simply spend a significant proportion of your life in the ocean, bite-resistant protection offers a level of assurance that no deterrent can match, because it does not depend on the shark's response.
For those who want the highest available level of protection, combining a deterrent with a Shark Stop bite-resistant wetsuit provides both layers, reduced likelihood of interaction, and proven protection if one occurs.
The Bottom Line
Shark deterrents try to prevent the shark from biting. Shark bite resistance ensures that if it does, you are protected.
Both approaches have value. But only one has been independently tested on live sharks and validated by peer-reviewed science to reduce critical injuries. And only one works regardless of species, conditions, or individual shark behaviour.
If you are ready to commit to the ocean with the highest level of confidence science can provide, explore our range of shark bite-resistant wetsuits, built for surfers, divers, and spearfishers who refuse to compromise.