Surf life saver drones are proving their worth for shark safety with the eyes in the sky spotting a big school of sharks near swimmers and surfers off a popular NSW north coast beach. The large school of whaler sharks was spotted at Evans Head, causing the beach to be closed for most of the day. A Surf Life Saving UAV (Unmanned aerial vehicle) operator conducting aerial surveillance for the Department of Primary Industries (DPI) spotted the group of about 40 sharks just offshore at the popular holiday spot. Drone footage shows a school of sharks at Evans Head. Picture: Surf Life Saving NSW