In the nutrient rich waters of Ningaloo Reef, Western Australia, small baitfish school closely together in what is known as a bait ball in order to appear larger to predators. This can cause a feeding frenzy where pelagic fish such as tuna, trevally and an array of opportunistic shark species shoot through the baitball, hoping to grab a mouthful of fish. If you look closely, you can see some bait fish caught in the mouth of the shark and even an extremely lucky fish who had found an escape route through the shark's gills.