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"shark band" attached to a swimmer is typically a wearable shark deterrent device, most commonly the product known as Sharkbanz. These bands use patented magnetic technology to deter sharks and stingrays by disrupting their sensitive electroreceptors. How They Work
Sharks and rays have a "sixth sense" through specialized organs called ampullae of Lorenzini, which detect minute electrical fields in the water (like a fish's heartbeat) to help them hunt and navigate.
The
Sharkbanz device contains powerful, permanent magnets that, when a
shark swims within a few feet (1-2 meters), generate an overwhelming
electrical field. This sensation for the shark is similar to a person
suddenly having a very bright light shone in their eyes in a dark room,
which causes them to turn away. The technology is designed to be
harmless to sharks and other marine life.
Key Features
- No Batteries or Charging: The permanent magnets mean the band is always "on".
- Worn on Wrist or Ankle: Swimmers often wear them on an ankle, as many "hit and run" investigative bites occur on the legs.
- Reduces Risk: The product is marketed as a risk reduction tool, similar to a bike helmet, but not a 100% guarantee against an attack.
- Targeted Deterrent: The magnetic field drops off quickly with distance, so it doesn't attract sharks from far away.
Scientific Backing
The
technology is the result of over a decade of peer-reviewed scientific
research and testing on a variety of predatory shark species. While some
independent studies have noted "limited to no measurable effect on
white shark behavior" in certain situations (such as an ambush attack),
the company maintains the technology is effective against investigative,
unprovoked interactions, which are the most common type of bite.
Sharkbanz·
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Sharkbanz'
powerful magnetic technology will attract tiny ferritic (iron)
particles commonly found in the ocean. You may observe these minute
particles sticking ...
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