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WebFishtek Marine Anti-Depredation Pinger Helping To Protect Yachts Against Orca Attack. A robust, cost-effective solution to reduce depredation and cetacean interactions with your … WebOct 28, 2014 · Acoustic alarms (pingers) have been used by the Queensland Shark Control Program ( QSCP) since 1992 (Erbe and McPherson, 2012) and are also used in other Australian states as well as South Africa to prevent both dolphin and whale entanglement. idiopathic angioedema nhs
Orcas: Facts about killer whales Live Science
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