位于南太半洋的法属玻利尼西亚群岛,是世界著名的度假圣地之一,由130个岛屿组成,塔希提是最大的一个岛屿。黑嘴唇珠母贝是法属玻利尼西亚水域的特产。它是一种雌雄同体的生物,随着年龄及水质条件的改变,双性现象会有所改变。如果一只蚌在一季只产卵,那么另一季则只产精子,当卵和精子被排到海水中后,它们在水底随机结合成为受精卵。塔希提黑珍珠的产量只占世界珍珠产最的1%,而且绝没有两颗完全相同的。古时候,只有俄罗斯、奥地利和法国的皇家贵族才可能拥有它。委内瑞拉尔南部的热带雨林中,耸立着一些被当地帕蒙人称为“特普伊”的平顶山。山下猴子的吱吱叫声和金刚鹦鹉的鸣声此起彼落,山顶上四周覆盖着棉花糖般的云,边缘攀爬着前所未见的热带植物,上百个瀑布把山体切割成一个个小块,远看恍如浩瀚碧海上散布着一个个小岛。在这云蒸雾罩的阿林深处,藏着世界上最高、落差最大的瀑布——天使瀑布。落差达979米,大约是尼亚加拉瀑布高度的16倍。瀑布分两级,先泻下807米,落在一个岩架上,然后再跌落172米,落在山脚下一个宽152米的大水池内。这个地区的热带雨林非常茂密,不可能步行抵达瀑布的底部。雨季时,河流因多雨而变深,人们可以乘船进入。冰岛是欧洲最西部的国家,靠近北极圈,全境1/8被冰川覆盖。岛上可以领略到冰川、热泉、间歇泉、活火山、冰帽、苔原、冰原、雪峰、火山岩荒漠、瀑布及火山口,还有凡尔纳笔下的《地心游记》通向地心的入口:斯乃费尔峰。秋季和冬初可见极光。大自然的伟大力量在冰岛同时呈现出的温柔、粗犷、壮美、奇特、怪异、虚幻,甚至残酷和无奈,让人觉得不可思议。位于美国西海岸的大峡谷为世界七大奇迹之一,雄伟壮观,历来是世人向往的旅游胜地。站在大峡谷边缘,真的会给你那种站的地球边缘的感觉,令人不禁惊叹大自然的鬼斧神工。曾有人这样比喻,它可以容纳下250个曼哈顿。大峡谷是科罗拉多河的杰作,故又名科罗拉多大峡谷。1903年美国总统西奥多·罗斯福来此游览时,曾感叹地说:“大峡谷使我充满了敬畏,它无可比拟,无法形容,在这辽阔的世界上,绝无仅有。” Located in the South Pacific Ocean, the French Polynesian Islands is one of the world’s famous resorts. It consists of 130 islands and Tahiti is the largest island. The black-lip mother-of-pearl is a specialty of French Polynesian waters. It is a hermaphrodite and the phenomenon of bisexuality changes with age and water quality conditions. If a cockroach only lays eggs in one season, then the other season only produces sperm. After the eggs and sperm are discharged into seawater, they randomly combine into a fertilized egg at the bottom of the water. The production of Tahitian black pearls accounts for only 1% of the world’s pearl production, and no two of them are identical. In ancient times, only the royal nobles of Russia, Austria and France may have it. In the tropical rainforests of southern Venezuela, there are some Pingdingshans known as the “Tpu Yi” by the local Pamons. The croaks of the monkeys under the mountain and the sounds of the macaws fell from the ground. The top of the hill was covered with marshmallow-like clouds, the edges of which climbed on unprecedented tropical plants. Hundreds of waterfalls cut the mountain into one. A small piece, from afar, such as the vast expanse of blue sea scattered with a small island. In the depths of Alin, which is covered by a cloud of mist, there is the highest waterfall in the world, Angel Falls. The drop is 979 meters, about 16 times the height of the Niagara Falls. The waterfall was divided into two levels. It was 807 meters down and landed on a rock ledge. Then it dropped 172 meters and fell into a large pool 152 meters wide at the foot of the mountain. The rainforest in this area is very dense and it is impossible to walk to the bottom of the waterfall. During the rainy season, the rivers became dark due to rain, and people could enter by boat. Iceland is the westernmost country in Europe, close to the Arctic Circle, and covered by glaciers 1/8 of the entire territory. The island can experience glaciers, hot springs, geysers, active volcanoes, ice caps, tundra, ice fields, snow peaks, volcanic rock deserts, waterfalls, and craters, and Verna’s “travel of the earth” leads to the center of the earth. Entrance: Snofell Peak. Aurora can be seen in autumn and early winter. The great power of nature at the same time in Iceland shows tenderness, roughness, splendor, peculiarity, weirdness, illusion, even cruelty and helplessness, making people feel incredible. Located on the west coast of the United States, the Grand Canyon is one of the seven wonders of the world. It is magnificent and has always been a tourist destination. Standing on the edge of the Grand Canyon will really give you the feeling of standing on the edge of the earth. It can not help but marvel at the uncanny nature of nature. There has been a metaphor for this, it can accommodate the next 250 Manhattan. The Grand Canyon is a masterpiece of the Colorado River. It is also known as the Grand Canyon. When the American President Theodore Roosevelt visited the city in 1903, he exclaimed: “The Grand Canyon has filled me with awe. It is unmatched and indescribable, and there is no such thing in this vast world.”