February 29, 2016
We received a positive report on our acoustic technology
The Space Alliance Technology Outreach Program (SATOP) is a
division of NASA that issues grants to companies that meet
certain criteria. SharkStopper was selected for a grant to
study the underwater acoustics technology that SharkStopper
SharkStopper was assigned SATOP’s Dr. Razvan Rusovici, a
graduate of Penn State and expert in acoustics. Dr. Rusovici
studied SharkStopper’s acoustics for decibel output,
distance and the feasibility for SharkStopper’s proposed use
as a shark repellent.
In summary, SATOP provided a positive report for the
SharkStopper technology and offered valuable recommendations
that were utilized in the creation of SharkStopper’s shark
repellent products. In their report, SATOP issued important
data such as; distance of SharkStopper’s underwater
acoustics, recommendations for decibel levels and speakers.
SATOP also supplied insight on the proper placement of
speakers in order to obtain maximum coverage.
repels sharks with the power of predatory sound
Michael Franco @writermfranco
August 15, 2014
probably true for many geeks, shark repellent has always
held a special place in my imagination ever since I saw Adam
West's Batman whip some out from his utility belt to get rid
of a pesky great white in 1966's "Batman: The Movie."
Though nothing so far seems to be as effective as his
handy-dandy spray, inventors have made some progress in
coming up with ways to keep human beings from becoming shark
snacks. For example, the company BoatsToGo.com created a
rash guard that supposedly makes you look unappealing to the
Taking a different approach, the SharkStopper tries to keep
sharks away from your aquatic space by sending out sound
waves that sharks supposedly don't like. The device is worn
around the ankle and triggers automatically when wet, which
the makers say will help you in shallow water, warning that
"Sharks can appear in less than 2 feet (less than a meter)
of water!" SharkStopper just launched a campaign on
Kickstarter to raise funds for production. A unit can be
yours for $275, so for that kind of money, I'd think you'd
have to be someone who spends a lot of time in the ocean --
or who just likes to turn the heads of beachgoers who will
likely think you're a felon wearing a tracking bracelet
around your leg.
emitted by [the] SharkStopper emulate the sounds of killer
whales in conjunction with our patented frequency overlay,"
the makers say on their Kickstarter page. Because killer
whales are not friendly to sharks, the noise is supposed to
keep Jaws and company away.
The makers say that the device has been tested with the help
of various shark experts in the Seattle Aquarium, in the
waters off of Mexico, and of Hawaii (among other places) and
found to be successful against a wide variety of sharks.
Unlike other Kickstarter projects that often don't have any
third-party affiliation, the makers of SharkStopper say that
they received a grant from NASA's Space Alliance Technology
Outreach Program which they used to study "the underwater
acoustics technology that SharkStopper deploys."
The SharkStopper is about the same weight as a cell phone
and charges with a USB cable.
What's unclear from the SharkStopper page is whether the
noises the device produces can be heard by human ears, or if
they're emitted at such a frequency that only sharks can
hear them. If it's the former, it might be a little awkward
to take a stroll on the beach with the thing strapped to
your ankle as it'll let loose a terrifying screech every
time the surf laps at your shins. We've asked the developers
about this and will update you once we know more.
One of the nicest things about the SharkStopper is that the
developers seem to have a genuine interest in helping
sharks, not just keeping them out of our swimming space.
Their plan for doing this is twofold.
First, by keeping sharks away from humans in recreational
areas, thereby reducing attacks, they believe the sound
repellent will improve the reputations of the creatures and
people will be less likely to want to harm them. Secondly,
and more concretely, they are planning a "Phase II" release
of the SharkStopper that will go on the lines of commercial
fishermen. This is intended to not only keep the sharks from
eating the catches, but to keep them from getting tangled in
lines and nets, which should help reduce the real threat in
our waters -- humans who, the SharkStopper team says, kill
up to 100 million sharks per year "in the name of fear,
sport, and cuisine."