Schooling Jacks

Lady Elliot Island, the southernmost coral cay of the Great Barrier Reef, is teeming with life underwater. Bigeye trevally, also called jacks, are frequently seen schooling. During the day they are stationary or slow-moving around the reef complexes, but at night, these aggregations dissolve, as the fish become more active, preparing for a night of hunting for their prey.

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