7. Sandy Island
Sandy Island which is located in the Coral Sea off the Australian coast is Captain Cook’s discovery. It used to always feature in the maps in the 1800 but disappeared suddenly. Google maps blacked out this island earlier with a black box but Bing completely removed it. A research ship tried to locate it with the coordinates available from earlier times but failed badly. What did Cook find? Is there really an island there which is kept as a secret or it disappeared. Nobody knows.