Shark Arms: In 1935 a tiger shark on display at the Coogee Aquarium in Sydney, Australia regurgitated a human arm., Lost Colony Of Roanoke: The lost colony of Roanoke was the first English attempt to settle in the New world, but it vanished without a trace in the late 16th century., and The Disappearance Of Dorothy Arnold: Dorothy Arnold disappeared from New York City's Fifth Avenue while dress shopping.