I think you have the backwards -- sharks aren't attracted to copper cables.. but are attracted to undersea fiber optic cables.. because they carry high voltage

I think you have the backwards -- sharks aren't attracted to copper cables.. but are attracted to undersea fiber optic cables.. because they carry high voltage power (for the undersea repeaters), which emits an electromagnetic field that attracts the sharks: http://blogs.discovermagazine.com/d-brief/2014/08/15/sharks-chomping-underwater-fiber-optic-cables/ http://blogs.discovermagazine.com/d-brief/2014/08/15/sharks-... http://bgr.com/2014/08/13/google-underwater-cable-network/ http://bgr.com/2014/08/13/google-underwater-cable-network/