Preliminary research by the University of Western Australia’s Oceans Institute suggests electronic anklet devices, bubble curtains and loud sounds including killer whale calls have a limited or insignificant effect in deterring sharks.
But there are promising early results from testing of the surfboard-based Shark Shield, which emits electromagnetic pulses to deter a range of shark species including tiger sharks and white sharks.
Read more –
https://au.news.yahoo.com/technology/a/28480289/shark-deterrents-cant-eliminate-attacks/
