Shark and whale feeding frenzies have been filmed by drones off the shores of K'gari, Fraser Island in what is called the shark highway.
Sunshine coast university lecturer and shark expert Dr. Bonnie Holmes says while it was quite common for spinner sharks to feed in groups, it was not often seen by humans.
Matthew Tratt was killed by a shark while spearfishing at Indian Head on the eastern side of Fraser Island, last year.