Report on field surveys to locate high density populations of juvenile crown-of-thorns starfish (Acanthaster planci) within the central Great Barrier Reef. The Crown-of-thorns study: Johnson DB, Moran PJ, Baker VJ, Christie CA, Miller IR, Miller-Smith BA and Thompson AA (1991) Report on field surveys to locate high density populations of juvenile crown-of-thorns starfish (Acanthaster planci) within the central Great Barrier Reef. The Crown-of-thorns study. Australian Institute of Marine Science. 17 p.