var vtn_player_type = "vp";var ven_video_key="NTk3NjMwfHwxNDcxfHwwfHx8fHx8";var ven_width="660";var ven_height="409";To counter the threat posed by sharks to surfers off South Africa's coast, a high-tech solution is currently on trial near Cape Town. Duration: 01:59
