North Horn, at Osprey Reef, is a wall and reef dive site in the Coral Sea, Australia, accessed by liveaboard, with a maximum depth of 40 metres. It lies within the Coral Sea Marine Park. The site is known for a controlled shark feed, described as one of the most impressive in the world. Grey reef sharks, silvertip sharks and whitetip reef sharks are resident. Scalloped hammerheads are seen seasonally from June to September. Bumphead parrotfish, giant trevally, great barracuda, potato grouper, reef manta rays and turtles are occasionally seen.