Dozens of sharks have been spotted in a spectacular feeding frenzy at one of Queensland's most popular surf spots. Onlookers captured these wild scenes at snapper rocks on the Gold Coast, as a pack of blacktip whaler sharks trapped a large school of bait fish. Lifeguards closed the beach and surfers cleared the water watching on as the predators thrashed around in the shallows for hours. Social version by Simon Greenfield for ABC News Digital. To personalise your news & stay in the know, downloa