英语翻译Life in the OceansCovering three quarters of the earth’s

英语翻译
Life in the Oceans
Covering three quarters of the earth’s surface,oceans are as diverse as they are large.The open seas constitute an interesting and mysterious world full of bizarre and fascinating creatures.This ecosystem is a self-contained world with a complex food chain and many organisms that have adapted to extreme and unusual conditions,
From the shore to the deepest depths,oceans are home to a wide variety of life on earth.Animals live either on the sea bed or in mid-water where they swim or float.Plants are only found in the sunlit zone where there is enough light for them to grow either anchored to the bottom or drifting in the water.Animals are found at all depths of the oceans,but are most abundant in the sunlit zone where food is plentiful.Not all free-swimming animals stay in one zone-the sperm whale dives to over 500 m (1,650 ft) to feed on squid,returning to the surface to breathe air.Some animals from cold,deep waters,such as the Greenland shark in the Atlantic,are also found in the cold,surface waters of polar regions.Over 90 per cent of all species dwell on the bottom.One rock can be home to at least ten major types,such as corals,mollusks,and sponges.Most ocean animals and plants have their origins in the sea,but some like whales and sea grasses are descended from ancestors that once lived on land.
The Coral Kingdom
A reef is a coral community consisting of several thousand organisms living together.Although it looks like a dormant underwater bush,the reek is very much alive.Reefs grow very slowly over time.In fact,an inch of coral reef takes nearly 100 years to grow!
Coral reefs are found only in shallow,warm water.The water temperature is usually constant year round.The reef is made up of thousands of corals.When a coral dies,it leaves its skeleton of calcium carbonate behind..Young corals attach themselves to the old skeleton and the cycle starts again.Each new generation is built upon the remains of the previous generation.
The actual animal that makes up the physical coral is called a polyp.It is column shaped and attaches itself to the floor of the reef.The top end extends into the water and is free to move about.Thousands of individual polyps from a colony,which in turn forms a reef.
Coral reef have an amazing variety of marine life.Every bit of space on the reef provides a hiding place or shelter for amazing creatures emerge from coral caves and crevices to feed.People as well rely on coral reefs for they protect coastlines,attract tourists’ money,and some island nations live on coral atolls.Sadly,in spite of being one of the great natural wonders of the world,coral reefs are now under threat.Theses include unsustainable fishing practices (using dynamite),and pollution.

海洋生物
覆盖地球的四分之三¯地表,海洋是一样多种多样大.公海构成了一个有趣而神秘的世界充满了离奇和令人着迷的动物.这一生态系统是一个自成一体的世界,一个复杂的食物链和许多生物适应极端的和不同寻常的条件下,
从岸边到水深最深,海洋是家里各种各样的地球上的生命.要么动物生活在海床或中水在那里,他们游泳或自由浮动.只有植物中发现阳光地带有足够的根据他们要么扎根成长的底部或漂浮在水中.动物被发现在所有深度的海洋,但最丰富的阳光地带丰富的食物.并非所有的自由游泳的动物留在一区抹香鲸潜水超过500米（一千六百五英尺） ,以捕食鱿鱼,返回地面呼吸空气.有些动物从冷,深水域,如格陵兰鲨鱼在大西洋,也发现在寒冷,地表水的极地区域.超过百分之九十的所有物种谈的底部.一个岩石可家至少有10个主要类型,如珊瑚,软体动物,和海绵.大多数海洋动物和植物都起源于海洋,但有些像鲸和海草的后裔祖先曾经生活在陆地上.
珊瑚王国
阿礁珊瑚是社会组成的几千有机体生活在一起.虽然它看起来像一个潜伏水下布什,臭气十分活跃.珊瑚礁生长十分缓慢随着时间的推移.事实上,一英寸的珊瑚礁需要近100年增长!
珊瑚礁是发现,只有在浅,温暖的水.水温恒定通常是全年无休.珊瑚礁是由成千上万的珊瑚.当珊瑚死了,它留下的骨骼碳酸钙背后..年轻的珊瑚重视自己的旧骨架和循环再次启动.每个新的一代是建立在遗体前一代.
动物的实际行动,使珊瑚礁的身体被称为息肉.这是柱形成和重视自己的楼的珊瑚礁.高端延伸到水和自由行动.成千上万的个人息肉从一个殖民地,进而形成了珊瑚礁.
珊瑚礁有一个惊人的各种海洋生物.每一点空间的珊瑚礁提供了一个藏身之地或住所出现惊人的生物从珊瑚礁的洞穴和裂缝,以饲料.人民以及依靠珊瑚礁为他们保护海岸线,吸引游客¯钱,和一些岛屿国家生活在珊瑚环礁.可悲的是,尽管是一个伟大的自然奇观的世界,珊瑚礁正受到威胁.论文包括不可持续的捕捞做法（使用炸药） ,和污染.