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LookingdownfromtwomilesabovethesurfaceoftheEarth从离地三千米的高空俯视地球it'simpossiblenottobeimpressedbythesheergrandeurandsplendorandpowerofthenaturalworld让人无法不为自然界的力量与其纯粹的宏伟壮丽而叹为观止.Tenyearsago,inatelevisionseriescalledPlanetEarth十年前在《行星地球》这一电视节目中werevealedmanyofthosewonders我们呈现了众多这样的奇迹buttoday,muchhaschanged.世界已大有变化Wecannowshowlifeonourplanetinentirelynewways.我们将用全新的方式展示地球上的生命Bringyouclosertoanimalsthaneverbefore.带你以前所未有的近距离接触动物Andrevealnewwildlifedramasfortheveryfirsttime.首次揭示野生动物的精彩瞬间Butthat'snotall.而且不只这些Ourplanethaschangedtoo.我们的星球也在变化Neverhavethosewildernessesbeenasfragileandaspreciousastheyaretoday.大自然从未像现在一样脆弱而又珍贵Atthiscrucialtimeforthenaturalworld,恰逢自然世界这一关键时刻wewilljourneytoeverycorneroftheglobe我们将再次启航踏遍全球toexplorethegreatesttreasuresofourlivingplanetandrevealtheextremelengthsanimalsgototosurvive.去探索这颗星球上最宝贵的财富,去揭秘动物们突破的种种极限Finally,wewillexploreourcities最后我们还将回到城市toseehowlifeisadaptingtothenewesthabitatonEarth.探寻生命是如何适应这个地球上最新兴的栖息地ThisisPlanetEarthII.这里是《行星地球》第二季Therearehundredsofthousandsofislands,地球上有成千上万的岛屿eachoneaworldinminiature,amicrocosmofourlivingplanet.每一座岛屿都是一个迷你世界，是地球的一个缩影ThestrugglestosurviveontheseremotelandsreflectthechallengesfacedbyalllifeonEarth.这些偏僻岛屿上为生存所做的努力，正如地球上所有生命都要面临的挑战ThetinyislandofEscudooffthecoastofPanama.巴拿马海岸线边的埃斯库多岛Hometothepygmythree-toedsloth.是侏三趾树懒的栖息地Thisisamaleandlifeheresuitshimwell.这是一只雄性树懒，在这里生活得十分惬意Mangrovesprovidealltheleaveshecaneat红树林为他提供食物andtherearenopredatorstoworryhim.也没有天敌前来叨扰Islandlifemayseemidyllic岛上的生活似牧歌般悠闲butitcomesataprice.但这是有代价的Thereareonlyafewhundredpygmyslothsinexistence.这座岛上只有几百只雌性侏三指树懒Andheneedsamate.而他需要配偶That'sanenticingcall...fromafemale.这雌性的叫声好生诱人Somewhereoutthere.就在不远的某个地方Andthis,forasloth,isaquickreaction.对树懒来说这反应堪称迅猛Theproblemis,there'sdeepwaterbetweenthem.但问题是中间隔着一渊深潭Sowhatshouldanyred-bloodedslothdo?那么一只气血方刚的树懒会怎么做呢Swim,ofcourse.当然是游过去Couldthisbeher?那会是她吗Hedoeshisbesttoputonaturnofspeed.他尽全力加快速度Butshe'snottheone.但叫的不是她Shealreadyhasababy这只母树懒已经有了一只幼崽andshewon'tmateagainuntilitleavesherinaboutsixmonths'time.在幼崽六个月后长大离开之前她不会再次交配Evenlifeonaparadiseislandcanhaveitslimitations.即使生活在天堂之岛也会有限制Butatleastshecan'tbefaraway.但至少她就在不远处Theworld'sentirepopulationofpygmyslothsisisolated地球上所有的侏三指树懒都生活在onaspeckoflandnobiggerthanNewYork'sCentralPark.这片不及纽约中央公园大小的岛屿上Thesizeofanislandhasahugeinfluence岛屿的大小极大地影响着onthefateofthosecastawaythere.生活在那里的动物TheislandofKomodoinIndonesia.这是印度尼西亚的科莫多岛Hometodragons.龙之巢穴Tenfeetlongandweighinganimpressive150lbs,体长三米重达六十八公斤thesearethelargestlivinglizardsontheplanet.他们是地球上现存体型最大的蜥蜴It'sunusualtofindlargepredatorsonislands.大型食肉动物在岛屿上并不常见Yet,forfourmillionyears,然而四百万年来theKomododragonhasdominatedhere.这么小的岛屿似乎不可能Itmightseemtherewouldn'tbeenoughfoodtosupportsuchgiantsonthisrelativelysmallisland.科莫多巨蜥一直称霸这里Butreptiles,beingcold-blooded,为这种庞然大物提供充足的食物来源但冷血爬行动物只需要needonlyaboutatenthofthefoodacarnivorousmammalwould.肉食性哺乳动物十分之一的食物量Asinglemealwilllastadragonamonth.巨蜥一餐可以支撑一个月Theyaresosuccessfulthattheironlyseriouscompetitioncomesfromothersoftheirownkind.他们的生存之道如此成功Andtherearesome2,000ofthemhere.以至于唯一的天敌就是他们的同类Thisgiant,however,而这座岛上有约两千只巨蜥isn'tlookingforfood-然而这只巨蜥he'slookingforamate.并不是在寻找食物Femaledragonscomeintoseasononlyonceayear.他在寻找配偶She'sreceptive.雌性巨蜥一年发一次情Sofar,sogood.这一只并不排斥Buthe'sstrayedintosomeoneelse'spatch.目前为止一切顺利Anotherhugemalethinksheisthekinghere.但他误入别人的领地Spacebeinglimitedonislands,另一只雄性巨蜥认为它才是这里的王dragonterritoriesoverlap岛屿上空间有限andthatcreatescontinualconflict.巨蜥的地盘时常重叠Indragonsociety,sizeiseverything.导致冲突不断Butifrivalsarecloselymatched,在巨蜥族群里体型决定一切theoutcomecanbeuncertain.但如果双方体型相当Musculartailsstrikewiththepowerofsledgehammers.鹿死谁手就难以预料Andtheirserratedteethareassharpassteakknives.强壮的尾巴一击如同重锤Eachtriestotopplehisopponent.锯齿形状的牙齿像牛排刀一样锋利Defeated.他们都想要掀翻对手Onlythemostpowerfuldragons胜者出现wintherighttomate.只有最强壮的巨蜥Thelimitedfoodandspaceonsmallislands才有权交配canoftenleadtointensecompetition.岛屿上有限的食物和空间Butsomeislandsareimmense.时常激起激烈的竞争Morelikeminiaturecontinents.但有些岛屿却幅员辽阔Andtheseprovideopportunitiesforlife更像是一块小型大陆toexperimentandevolve.这为不同生命的进化与试验Madagascarisoneofthebiggestislands提供了机会andalsooneoftheoldest,马达加斯加是地球上最大的岛屿之一havingsplitawayfromAfricaover120millionyearsago.也是最古老的岛屿之一Withtimeandisolation,它在一亿两千万年前就已经脱离非洲大陆itsanimalshaveadapted随着时间流逝与地理隔断的出现totakeadvantageofeveryavailableniche.岛上的动物们不断适应Theislandnowhassome250,000differentspecies,充分利用一切可用资源mostfoundnowhereelseonEarth.这座岛上现存约二十五万不同的物种Thesearenotmonkeys,butlemurs.大部分都是该地区特有种Fromasingleancestor,这些不是猴子而是狐猴about100differenttypeshaveevolved.他们从同一个祖先Thelargest,theindri,seldomcomesdownfromthebranches.进化出一百个不同的种Themuchsmallerringtails体型最大的马达加斯加大狐猴极少下树wanderintroopsacrosstheforestfloor体型小许多的环尾狐猴searchingforfood.成群结队地扫荡森林地面Andtinybamboolemurseatnothingexceptbamboo.寻找食物Withfewcompetitors,lemurshavebeenfreetocolonise极小的驯狐猴只吃竹子almosteveryenvironmentontheisland.因为竞争者极少Eventhemostextreme.狐猴能够在整片岛屿上生活Thisbabysifakahasahardlifeaheadofit.甚至是环境极其恶劣的地方He'sbeenborninthemostaridandhostilecorner这只幼小的冕狐猴成长之路十分艰辛ofMadagascar'svastlandscape.他出生在马达加斯加广阔土地上Ifheistosurvivehere,hehasmuchtolearn.最贫瘠干旱的地方Th