No.1
The longest canyon
The Nu River Grand Canyon, also known as the "Oriental Canyon", is located in the eastern part of China's Qinghai-Tibet Plateau, with a total length of more than 600 kilometers, which is longer than the Grand Canyon of the United States. The deepest part of the canyon is 4000 to 5000 meters.
No.2
The largest cave
Tenglong Cave is located near the city of Lichuan in Hubei Province, China, and consists of two caves: dry cave and water cave. The mouth of the cave is 74 meters high and 64 meters wide, the main cave is 52.8 kilometers long, and the total area of the cave is 156 square kilometers, which is the largest cave in the world. The limestone landform in the cave is well developed, and wonders such as stone art, stalagmites, stone flowers, stone mantles, and stone people can be seen everywhere. There are many undercurrents in the cave, which are urgent and slow, and there are fish and shrimp swimming in the water, which is very rare in other caves.
No.3
The highest mountain
At 8844.43 meters above sea level, Mount Everest is the highest mountain in the world. It is the main peak of the Himalayas and is located in the middle of the Jimalayas on the border of Tibet and the Kingdom of Nepal in China.
No.4
The most beautiful volcano
Located in the south-central part of the Japanese island of Honshu, Mt. Fuji is the highest mountain in Japan at 3,776 meters above sea level. Mt. Fuji looks like a fan hanging upside down in the air. Towering into the clouds, with snow-capped summits and verdant trees beneath, the peaks are recognized as the most beautiful volcanoes in the world.
No.5
The most famous volcano
Located in the eastern part of the Bay of Naples in southern Italy, Mount Vesuvius is the most famous active volcano in the world, the only active volcano on the European continent, and the only active volcano on the European continent. What made Mount Vesuvius famous was a major eruption in 79 AD that caused nearby Herculaneum and Pompeii to disappear from the ground.
No.5
The largest sand island
Chongdao Island in Shanghai, China, is located at the mouth of the Yangtze River, with an east-west length of 76 kilometers and a north-south width of 13 to 18 kilometers. Chongming Island has a history of more than 1,300 years, is a large amount of sediment carried by the water of the Yangtze River, and continues to silt up, the current area of more than 1200 square kilometers, is the world's largest sand island.
No.6
The largest group of coral reefs
Winding across the east coast of Oceania, the Great Barrier Reef is home to more than 3,000 coral bodies and islets, making it the largest group of coral reefs in the world. Some of these reefs and islets are only a few meters wide, while others are as large as 50 square kilometers. The island is beautiful and is the perfect place for a relaxing holiday.
No.7
The largest fish
Whale sharks are the largest known fish in the world. They have a wide head, small eyes, a wide mouth, and beautiful vertebral fins, and are widely distributed in the tropical and temperate seas of the Indian, Pacific and Atlantic Oceans, with the largest reaching a length of up to 20 meters, longer than a bus.
No.8
The laziest fish
The bass is approximately cylindrical in shape and has a suction cup transformed from a dorsal fin on its head. It can be adsorbed to whales, sharks or boats by means of suction cups, and can travel far and wide without a little effort, and is known as the laziest fish in the world.
No.9
The largest bird with the largest beak
The toucan, which lives in the tropical forests of Argentina and Mexico, is the largest bird in the world, with a body length of 60 cm and a mouth length of 24 cm. The toucan's beak is a shell on the outside, and in the middle is a spongy bone tissue filled with air, so although their beaks are large, their weight is very light, and the heaviest one is less than 30 grams, so the mouth is not too burdensome for the toucan.
No.10
The earliest birds
Archaeopteryx is the earliest bird to appear on Earth and is the ancestor of modern birds. They were about the size of crows today, with wings and feathers, teeth in their mouths, claws in front of their wings, and hind limbs and tail vertebrae. It is speculated that they evolved from reptiles of the Mesozoic Era.
No.11
The biggest flower
Growing in the tropical forests of Indonesia, the King Flower is the largest flower in the world. The big king flower only blooms one flower in its lifetime, usually, the diameter of the flower is about 1 meter, and the largest diameter can reach 1.4OY; There are 5 petals, large and thick, each about 30 cm long; The entire corolla is bright red with some white spots on it.
No.12
The city furthest from the sea
Urumqi, the capital of China's Xinjiang Uyghur Autonomous Region, is located in the grassland area at the northern foot of the Tianshan Mountains, and it is the city furthest from the ocean in the world, with about 2,500 kilometers of coastline from the nearest coastline.
No.13
The saltiest lake
The Dead Sea, located on the border between Palestine, Israel and Jordan, is not actually a sea, but an inland lake. It is the saltiest lake in the world, with a salinity of almost 6 to 7 times that of ordinary seawater. Far more than the turbulence of liver fish and shrimp in the sea, there is no grass. Due to the high salinity and buoyancy, people can lie on the surface of the lake without sinking.
No.14
The sea with the lowest salinity
The Baltic Sea, located in the north of Europe and surrounded by continents on three sides, is part of the Atlantic Ocean and is the least salinity sea in the world. The annual evaporation of the Baltic Sea is less than the annual precipitation, and the average salt content of 1000 grams of seawater is 6 grams, which is much lower than the average salinity of seawater worldwide of 35 ‰, almost the same as fresh water.
No.15
The saltiest sea
Between the western side of the Arabian Peninsula in Asia and the African continent, there is a narrow sea called the Red Sea. The average salt content of 1,000 grams of seawater in the Red Sea is more than 40 grams. Because the salt content of seawater is too high and the density is relatively large, the floating ability is very strong, and it is not easy for people to sink to the bottom when lying on the surface of the water.