Marion Island is part of the Coral Islands North West Group in northern Queensland, Australia. Marion Reef is al arge circular atoll formation that is composed of three main units located on the Eastern side: Marion, Long and Wansfell; and a number of smaller reefs on the west. The formation sits atop a submarine feature known as the Marion Plateau which is separated from the larger Coral Sea Plateau to the north by the Townsville Trough. The island is uninhabited
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