Macquarie Island is a large island in the Southern Ocean. It is about south east of Tasmania, and about half way between Australia and Antarctica. The island became a UNESCO World Heritage Site in 1992. Macquarie Island is about long and wide. It was first discovered in July 1810, by Captain Hasselburgh, who was searching for places to hunt whales and seals. No people live there now. The only way to get to the island is by sea and there are no harbors to dock a ship.