BBC蓝色星球纪录片英文观后感

1、The review of the blue pla net by BBCOur earth actually is a blue planet, which is covered with 71 percent of the worldby brine. How vast such superficial content! Therefore, the mysterious field is composed of numerous parts, such as various marine animals and manydifferentplants.This means a truth

2、 that we can t neglect the effects alerted on the ocean by the creature and some terrestrial beings along the coast.Food lin ks, complex food n et, describe relati on shiprunning through the ani mal-k in ds,from pla nkton to the hugest sort, blue whale, approximately. To my surprise, blue whales, su

3、ch a formidable giant, rely on millions of krill. Such gargantuan harvests depe nd on the con ti nuing fertility of the ocea n. There exists much amaz ing associati on betwee n two species like this. Gen erally, grey whales are much biggerthan killer whales. But 15 killer whales can trace an adult f

4、emale grey whale several kilometers just for her baby. They chase the young un til he can t swim any Ion gerbecause of toil. Whales breathe with lung, as is known. These killer whales try their best to press the baby grey whale to make his head in the sea. At last, the young whale dies of oxygen-poo

5、r. His mother can not do anything about it and continue her journey north for food, leavi ng the child s body behind. She has no choice to give up the one who she had con ceived for thirtee n mon ths.Moreover, the living in the water is usually classified according to their ambient livi ng en vir on

6、men t. I n the abyssal area, large ranks of tran spare nt lives lead a rich and varied life. Among the group, imitati on is a n ecessary skill to con fusethe enemy and attain what they want. These guys may imitate the surroundings or just copy the color around them. Somefish have special luminous or

7、gans, which function as viewfinders, hiding in the dark. They reflect the weak blue light from water surface and slightly disappear along with it. Some striped mullets and jellyfishhave the ability to flash like neon light. Their moti on is excelle nt in disguise.Most of them move slowly relatively.

8、 As the depth rises, the quantityof living growgradually with the sun light brighte ning and en ergy stre ngthe ned.In the shallow sea, battles happe n every day almost. Various ani mals join in thecruel conflict.As is commonly seen, bands of sardines used to take action togetherfor safety. It s not

9、, n evertheless, an ideal method. Bottle nose dolph in and whales uninten ti on ally work in conj un cti on with each other. Dolph ins are in charge ofgettingthe sardines apart, making use of waves foam. Whales can enjoy the dish muchmore easily. Smart seabirds fly low, pressing close to the water,

10、to find the bestlocation to seize the prey. After that, they rush into the water like spurting arrow. The hun ters grab their relish to the habitat.Mean time, besides food link, there coexists symbiosis. Sea-gull and half-m oon canhelp other fish by cleaning the mould on the cover.What is vividlyint

11、roducedabove occurs in the diverse layers, while the layers arenot alone, in touch with each other in stead. Ocea n curre nt becomes the key factorto mix the brine from distinctareas. Nutrition blends to a new balanee. Of course,this results in energetic fishing ground. Fish shuttle up and down, mak

12、ing water world filled with vitality and more oxygen dissolved.The ocean is an organic whole in the long term, in spite of the pole and equator.Low degree represents a flinty challenge in the pole. Even an animal of large scale may face fatal attacks tha nks to thejam result ing from the freez ing c

13、old weather.Near an ice hole lives a polar bear. Through the hole, white whales keep breathingduring the past half year. The bear obtain some trophies by overwhelming these whales trapped in the hole. Harp seals give birth to their babies on the ice pieces, partly due to that reason. Coming to the n

14、ext summer, generations fly back from the south.Guillemots nested on the cliff that bears and foxes are unable to reach. Fortunately, guillemots can haunt betwee n sky and sea water. About on Jun e, ice layer begi n to melt. Many cracks emerge, which ben efits the marine ani mals that n eed oxyge n.

15、 Melt ing provide an access to cods for white whales. Autumn arrives,sea starts freezingagainuntil November. On the opposite pole, situation preciselyis on the contrary.Heredwell penguins. Surroun ded by An tarctic Ocea n, the continent gets rid of bearsthreate ning, suppl ying penguins with soluti

16、on to leisure. High temperature causes creature diversity,to some degree. In the tropic and sub-tropic, plants rank fromalgae to man grove. The trait offers an importa nt place for the beings to reside and frolic. Moon gravity plays a significant role in the forming of tide and tsunami.Coral reef im

17、proves the sea bed into a perfect harbor for differentorganism. Alongwith the rising tide, turtles land on some islands to lay eggs and crabs get out of the sand to search for ani malcule to eat. Shellfish can come and go free. But it s a tragedy that shellfishoccasi on allycha nge into a delicious

18、feast for others.Flounder,kite-shaped, always gets help from tide and wave and glides at pleasure.The strongest tide arrives after new moon, caused by sun gravity together with moon gravity. Sea bed expose in the air. Raccoons look for suitablefood there, the bestoutcome is crab. At the same time, tide is the good timing for fishes to mate and accomplish fertilizati on and breed ing.But global cha nges now threate n the great blooms of pla nkton on which the whales depend. Once, and not so long ago, 300,000 blue whales roamed the oceans. Now, less than 3% of that nu mber rema ins. Our pla