Shark 'Pingers' on Coast by Mid-2010New acoustic alarms designed to warn whales about shark nets could be fitted on Australia's Gold Coast in time for the whale migration. The alarms have been developed with a stronger frequency known to be audible to whales. Every year dozens of turtles, dugongs, dolphins and rays fall victim to the Gold Coast's shark nets, prompting opponents to call for their removal. The manufacturing company claims to have developed pingers that are more than 90% successful in reducing dolphin and porpoise by-catch in commercial net fishing practises. Article reprints or information email DiveNZ@divenewzealand.co.nz |
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