Development of SharkStopper products began with the premise
that sharks are affected by sounds. We knew that certain
sounds, such as those made by injured prey, attract sharks,
so we investigated whether sounds could also be used to
Sharks have an inner ear made up of three semicircular
canals. Inside each canal are four sensory areas,
responsible for both balance and sound perception. Sharks
hear (or interpret) sounds with frequencies ranging from
10Hz to 1kHz, and are especially responsive to sounds 500Hz
With this knowledge we conducted field tests around the
world and found a particular frequency range and modulation
that is effective against sharks. The species that were
repelled include but are not limited to great white, bull,
tiger, hammerhead, black tip, lemon, nurse, sand and
Caribbean reef sharks.
After hearing that scientists used orca whale sounds with
some success against silky sharks in the 1970's, we tested
the call of killer whales to see if those calls would repel
sharks. When the sounds proved successful we combined the
orca sounds with our modulated frequency and created the
perfect sound to repel sharks.
Next we miniaturized our invention to be small enough for a
child and adult to wear but large enough to produce the
decibel level required to repel sharks. The final step was
to encase the electronics in an ergonomically designed
eco-friendly durable plastic.
Features include a sensor that automatically turns the
device on and off, a rechargeable battery that provides up
to four hours of protection, and a warning vibration to
alert users the battery charge is getting low.
Here at SharkStopper we are proud to announce that we will
be offering our device to the public this year. Add
to your favorites and check back for updates.