D23***98The Great Barrier Reef (English: The Great Barrier Reef) is the largest and longest coral reef in the world. It is located in the southern hemisphere. It runs through the northeastern coast of Australia. It extends from the Torres Strait in the north to the south of the Tropic of Capricorn. It stretches for a total of 2011 kilometers. The widest point is 161 kilometers. There are 2,900 large and small coral reef islands, and the natural landscape is very special. The southern end of the Great Barrier Reef is 241 kilometers farthest from the coast, the northern end is closer, and the nearest is only 16 kilometers from the coast. At low tide, part of the coral reef emerges to form coral islands. Between the reef and the coast is a very convenient sea road. When the sea is calm, the cruise ship passes here, and the continuous colorful and multi-shaped coral scenery under the ship becomes the best underwater wonder that attracts tourists from all over the world. It was included in the World Natural Heritage List in 1981. In March 2017, scientists discovered that most of the coral reefs in the most pristine northern part of the Great Barrier Reef had been killed by overheated seawater in 2016. A little further south, the coral reef in the middle of the Great Barrier Reef was spared in 2016, but is now bleaching, which is another potential sign of mass death. In April 2018, the British journal Nature published an article stating that coral colonies on the Great Barrier Reef are slowly dying.