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Shark repellents are a category of animal repellents. Shark repellent technologies include magnetic shark repellent, electropositive shark repellents, electrical repellents, and semiochemicals. Shark repellents can be used to protect people from sharks by driving the sharks away from areas where they are likely to harm human beings.
SharkDefense made the discovery of electrochemical shark repellent effects on May 1, 2006 at South Bimini, Bahamas at the Bimini Biological Field Station. An electropositive metal, which was a component of a permanent magnet, was chosen as an experimental control for a tonic immobility experiment by Eric Stroud using a juvenile lemon shark (Negaprion brevirostris).
A shark repellent is any method of driving sharks away from an area and includes magnetic shark repellent, electropositive shark repellents, electrical repellents (including Shark Shield) and semiochemicals. One example is a product called Anti-Shark 100 [47] which is an aerosol can that contains an extract of dead shark tissue.
In 2011, the first test of a permanent magnet repellent on a Great White shark was successfully conducted in South Africa with Chris Fallows and Craig O'Connell (SharkDefense). The test was successful, with the shark flinching despite feeding stimulus present, and was featured on Great White Invasion on Discovery Channel's Shark Week. [7]
Apr. 15, 2003 – First successful field test of a semiochemical shark repellent, Triangle Rocks, South Bimini, Bahamas. 2. May 2004 – A gustatory shark repellent (“5ISO”) is isolated and successfully tested 3. Nov. 2004 – Accidental discovery of the repellent effects of a rare-earth magnet is made at the Oak Ridge Shark Lab 4.
Ocean Guardian is the manufacturer of Shark Shield shark repellent devices. The Ocean Guardian electronic devices create an electromagnetic field to deter shark attacks and are used by surfers, scuba divers, snorkelers, spearfishers, ocean kayak fishers, swimming areas off boats and for ocean fishing.
In the first 11 months of 2013, 633 sharks were captured in Queensland — more than 95% of those sharks died. [42] From 2013 to 2014, 667 sharks died in Queensland's "shark control" program, including great white sharks and critically endangered grey nurse sharks. [35] From 2014 to 2015, 621 sharks died in Queensland. [43]
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