Shark-spotting drones to monitor 70 NSW beaches every day of the year Australian Broadcasting Corporation Australia news live: shark-spotting drones to patrol NSW beaches year-round; Chalmers grilled on ‘widow’s tax’ The Guardian Sydney shark attacks: Year-round drones and an audit of bull sharks: Beach safety plan unveiled SMH.com.au Blunt theory on shark sightings The Australian Drone army summonsed to guard against sharks year-round The Canberra Times