蓝色星球
东南亚遥远的角落里 In a far corner of South-East Asia,
坐落着珊瑚礁三角区 lies the Coral Triangle.
这里的珊瑚礁种类之多 堪称首屈一指 A cluster of the richest coral reefs in the world.
海底城市里挤满了各种各样的生物 Undersea cities crammed full of life.
与拥挤的大都市一样 As in any crowded metropolis,
各种生物都要争夺生存空间 there is fierce rivalry for space,
食物 for food
还有伴侣 and for a partner.
但是珊瑚礁也是一个 充满了机遇的地方 But the reef is also a place full of opportunity.
墨鱼 A cuttlefish.
捕猎螃蟹是它的专长 It specialises in hunting crabs.
但是大螃蟹却是及其危险的猎物 But a large crab is a dangerous quarry.
它们的爪子强劲而有力 It has powerful claws.
然而墨鱼却有着非凡的天赋 The cuttlefish, however, has a remarkable talent.
它的皮肤中含有数百万个色素细胞 Its skin contains millions of pigment cells
凭借这些细胞 with which it can create
墨鱼能够变化出色彩各异的万千形态 ever-changing colours and patterns.
这一招显然把螃蟹迷惑住了 And that apparently hypnotises the crab.
尽管墨鱼很聪明 A cuttlefish may be clever,
但要轮体积 还是鲨鱼大 but a shark is bigger.
另外鲨鱼也会以墨鱼为食 And it eats cuttlefish.
是时候消失了 Time to disappear.
墨鱼重回猎场 Back to the hunt.
它发现了新的目标 但还是使用了相同的催眠术 A new target, but the same mesmerising technique.
动物如果能在这繁忙的 For those that manage to establish themselves in these bustling
海底城市里立足的话 undersea cities,
就会获得丰厚的奖赏 there can be great rewards.
珊瑚礁
珊瑚在热带地区 Corals build themselves homes of limestone,
温暖清澈的浅水区 为自己建造石灰岩家园 in the warm, clear, shallow seas of the Tropics.
这些珊瑚礁所占的海底面积 Their reefs occupy less than one tenth
连千分之一的都不到 of one percent of the ocean floor.
然而这里却是世界上四分之一 Yet, they're home to a quarter
已知海洋生物的家园 of all known marine species.
这些珊瑚礁结构复杂 They are complex,
变化极为丰富 infinitely variant structures,
它们为许许多多的居民提供各种各样的家园 providing all kinds of homes for their many residents,
从阁楼套房 from penthouse suites,
到偏僻巢穴 to backstreet dens.
在澳大利亚的大堡礁上 Here, on Australia's Great Barrier Reef,
一条鳃棘鲈靠捕猎小鱼为生 a coral grouper lives by hunting for small fish.
但是如果你连缝隙都穿不过的话 But how do you get a meal here,
你要如何在这里找到食物 when you're too big to squeeze into crevices?
而且鳃棘鲈还有一个对手 And the grouper also has a rival,
这个聪明绝顶的对手 one which is highly intelligent,
寻找的也是同一种猎物 and seeks the same kind of prey.
这个对手就是章鱼 An octopus.
它能穿过非常狭小的缝隙 It can reach into really narrow cracks.
就算是这样 Even so,
他的猎物也常常逃走 its prey often escapes.
如果它们合作呢 What if they could work together?
鳃棘鲈身上颜色变浅 The grouper turns pale,
试图吸引章鱼的注意力 and tries to attract the octopus's attention.
它还表演了倒立 It performs a head stand.
鳃棘鲈不仅仅给章鱼发出信号 Not only is the grouper signalling to the octopus,
它还指出了猎物的藏身之所 it's indicating where the prey is hiding.
章鱼到达了里面 The octopus reaches inside.
这条鱼慌张起来 The fish take fright.
直直的朝着鳃棘鲈的嘴里游去 And swim straight into the grouper's jaws.
得到奖励的有时候是章鱼 Sometimes, the octopus gets the reward,
有时候则是鳃棘鲈 sometimes, the grouper does.
这两种不同的动物 Two very different species
发现团队合作能让它们 have discovered that teamwork
在珊瑚礁市里大获成功 can bring success, in reef city.
事实上团队合作精神 Teamwork , in fact,
正是珊瑚礁世界的生存基础 is the very foundation of life on the reef.
珊瑚本身也要依赖合作关系 The corals themselves also rely on a partnership.
只不过它们的合作要亲密的多 But one of a much more intimate kind.
珊瑚是一种类海葵动物的集群 Corals are colonies of anemone-like animals,
也就是珊瑚虫 polyps.
只不过有些只有沙粒那么大 Some as small as grains of sand.
每个珊瑚虫组织里生活的 Living inside the tissues of each polyp,
是我们肉眼无法识别的 are minute plant-like cells,
类植物微小细胞 invisible to the naked eye.
在白天充足的热带阳光下 By day flourishing in tropical sunshine,
这些类植物细胞蓬勃生长 the plant-like cells provide the polyps
可为珊瑚虫提供90%以上的食物 with up to 90% of their food.
天黑时珊瑚虫用自己的触手 And when it's dark,the polyps continue to feed
抓住水中飘过 by using their tentacles
可食颗粒继续进食 to grab edible particles drifting by.
珊瑚虫还会从海水中 The polyps also extract calcium carbonate
提取碳酸钙 from the sea water,
并用碳酸钙来为自己 and use it to build a stony housing
建造坚固的外壳 for themselves.
珊瑚集群能够持续生长数百年 Coral colonies can continue to grow for centuries.
有些或许能达到千年 Possibly millennia.
它们的建造物 And they can build structures
甚至能达到一所房子那么大 that can reach the size of a house.
它们建造的最大的城市 The biggest of their cities,
当属大堡礁 is the Great Barrier Reef.
大堡礁纵贯于澳大利亚东北海岸 It runs for over 1400 miles
全长两千三百公里 along the coast of North East Australia.
无论珊瑚礁处于何处 Activity in coral reefs,
里头总是一派活跃的景象 wherever they are, never ceases.
黎明时分 日班开始了 At dawn, the day shift begins.
与之相伴的是一首 Accompanied by a chorus of submarine song,
由鱼虾和珊瑚礁其他住户 created by fish, shrimps,
一同合唱的海底乐曲 and other inhabitants of the reef.
这个城市的每个居民都有自己的特色 Every resident in this city, has its role.
食腐动物 例如海参 Scavengers, like the sea cucumber,
负责循环其他生物产生的废物 recycle the waste of others.
鹦哥鱼咬下大块的珊瑚 These parrot fish, bite off chunks of coral
放在嘴中咀嚼 吸收其中的成分 and crunch it to extract the contents.
再将无法消化的珊瑚排泄出来形成沙 And then, excrete the rest as sand.
在婆罗洲这里 绿海龟 Green turtles, here in Borneo,
总是定期前往 pay regular visits
一块特定的珊瑚 to a particular patch of coral.
这只母龟起的很早 This little female is up early
它比其他绿海龟提前一步出发了 and one step ahead of the others.
为了到达哪里 绿海龟要沿着珊瑚礁 Turtles travel long distances along the reef
游很长一段距离 in order to get here.
这里就是它们的目的地 This is their destination.
龟岩 Turtle Rock.
一代又一袋的海龟来到这里 enerations of visiting turtles
龟岩上方已经被磨出了一个凹陷处 have worn a hollow in its top.
这里是鲇鱼 This is home to blennies
和刺尾鱼的家园 and surgeon fish.
它们为访客清洗身体 They clean the visitors
将访客身上的海藻 寄生虫 picking off any algae, parasites
以及死皮一样去除 and dead skin, that they can find.
其他客户紧随其后前来 Other client are close behind.
慢慢地排起了长队 A queue is forming.
体形较大的公龟闯了进来 The big males barge their way in.
身形小的母龟被它们挤了出去 And the smaller female is forced out.
在其他海归争吵不休时 She takes a quick turn around the block,
这只母龟迅速绕过礁石 while the others are squabbling.
接着又偷偷地溜了回去 And then, she sneaks back in.
负责清理的动物吃了一顿营养餐 So the cleaners get a nutritious meal,
来访的顾客则把身上 and their customers are freed
寄生虫和其他物资 of their parasites
都清理干净了 and other encumbrances.
我们现在认为 And it's now thought
清理站的贴身护理 that a spot of pampering
或许还能够 at a cleaning station
起到缓解压力的作用 may even reduce stress.
中东地区 The lands of the Middle East
极其炎热干燥 are so hot and dry,
大多数地表上都是寸草不生 that much of their surface is almost lifeless.
但是在红海里 But here in the Red Sea,
珊瑚礁的生长态势却十分旺盛 Coral Reefs flourish wonderfully.
近海水域的生物种类 The waters offshore,
几乎和热带雨林一样繁荣 are almost as rich in life as a rainforest.
有些动物来到珊瑚礁这边来 And some animals come to the reefs
只是为了休息和放松 simply for rest and relaxation.
宽吻海豚一家子 The family of bottlenose dolphins
昨天夜里都在近海岸处进食 are resting on the reef
此刻它们就在珊瑚礁上休息放松 after a night's feeding offshore.
成年海豚和它们的宝宝们在睡觉时 Whilst the adult and their babies sleep,
青年海豚就开始探索环境 the adolescents set off to explore...
它们似乎在构思游戏 ...and they appear to make up games.
你可以把这个游戏叫做“抓珊瑚” You might call this one, "Catch the coral."
游戏规则并不是十分明确 The rules aren't entirely clear.
它们将不同的珊瑚碎片拾起来 They pick up different bits of broken coral,
然后丢下 and drop them.
有些坠落得很快 Some fall fast.
有些下沉的速度要慢些 Others sink more slowly.
有些珊瑚块下降的方式 And some seem to be descending in a way
似乎把大家逗的很开心 that pleases everybody.
只有最成功的城市居民 Only the most successful city residents
才能够玩得起游戏 can afford the luxury of playing games.
不过这些游戏的确有其价值 But, such games do that their value.
这些游戏能够提高小海豚的 They may help the youngsters develop
协调能力和灵活性 the coordination and the agility
以后它们开始在 that they will need
远洋捕食时 将要用到这些本领 when they start hunting in the open sea.
每个珊瑚礁都有明确的分界线 Every reef has a sharply defined boundary.
那就是它的城墙 Its city walls.
城墙外部是陡坡 On the outer side is the drop off.
这些壁垒能够保护城市 These ramparts protect the city
不受海浪的侵袭 from the ocean waves.
不过这些城墙 But twice a day,
每日都要被涨潮覆盖两次 the walls are covered by the incoming tide.
在巴哈马 In the Bahamas,
这股急流会形成 the rush of the water creates
一种奇特的现象 a truly strange phenomenon.
水手曾在故事里数过 有一只大海怪 Seamen once told tales of a giant sea monster,
就藏在珊瑚礁内部深处 lurking here deep inside the reef,
这只大海怪会将水手们拽向地狱 that would drag sailors to their doom.
如今 我们已经知道那其实是 Today, we know it is in fact a whirlpool
涨潮在珊瑚洞穴上方流过时 created by the incoming tide
而生成的漩涡 rushing over deep coral caves.
这些水流会把远洋那边 These currents bring in fresh supplies
新鲜微小食物 of microscopic food to the reef
带到珊瑚礁上来 from the open ocean.
在马尔代夫 潮水的规模达到最大时 And in the Maldives, on the biggest tides,
其中一个珊瑚泻湖里 one particular coral lagoon
将充满浮游生物 become so flooded with plankton,
它们会引来数百只巨大海洋生物 that it attracts hundreds of ocean giants.
蝠鲼 Manta Rays.
蝠鲼翼展宽达3米 With three meter wing spans.
它们张着那狭槽似的大嘴 With their huge sloth like mouths wide open
从浮游生物旁边穿过 they filter out the plankton.
蝠鲼生成了自己的漩涡 And the mantas create a vortex of their own
漩涡将它们的食物聚得更加紧密 that further concentrates their food.
这种行为被称作是 This behaviour has been called
蝠鲼旋风 the manta cyclone.
接着潮水发生变化 Then the tide changes,
食物供应被切断了 and the supply of food is cut of.
蝠鲼离开了泻湖 The mantas leave the lagoon.
珊瑚礁的另一侧是动物栖息处 Life on the sheltered side of the reef
那里生活安静祥和 is tranquil and peaceful.
任何生物如果想要逃离 In these suburbs,
繁忙拥挤的珊瑚礁城市 any creature wishing to escape
那它们都可以在这些郊区 from the bustling crowds of reef city,
找到充足的空间 can find plenty of space.
从另外一方面说 On the other hand,
这里也没有藏身之所 there is nowhere to hide.
因此这里在夜间 That, at night,
就会变得非常危险 makes it a dangerous place.
夜间捕食者 好比这条狮子鱼 Nocturnal predators, such as this lion fish,
就在珊瑚礁边上巡逻 patrol the reef edge.
捕食者变成了被捕食者 The hunter has become the hunted.
博比特虫 A bobbit,
这只食肉蠕虫 体型庞大 a giant carnivorous worm
双顎和匕首一样锋利 with jaws as sharp as daggers.
它的祖先可以追溯到 It has an ancestry that stretches back
四亿多年前 more than four hundred million years.
它身长一米 It's a meter long.
它用味觉寻找气味 It tastes for scent.
用触觉觉察动静 And feels for movement.
黎明 出现光线后 Dawn, and with light,
珊瑚礁便成了较为安全的地方 the reef becomes a safer place.
小欧鳊回来觅食了 Little bream return to foraging.
博比特虫的肚子可能还没有填饱 The bobbit might still be hungry.
不过现在是白天 情况不一样了 But now in daylight the odds have shifted.
欧鳊能够看到博比特虫 The bream can see the bobbit.
欧鳊们没有撤退 Instead of retreating,
它们聚集到一起 they join together to blow away the sand
将盖住的博比特虫的沙子吹开 covering the worm.
博比特虫的突袭优势就这样被剥夺了 So, taking away its advantage of surprise.
将博比特虫的藏身之所暴露出来 By revealing the bobbit's hiding place,
它们就能够更加安全地进食 they will all be able to feed more safely.
不过最好记住一点 But it pays to remember
周围总有博比特虫的威胁 there is a bobbit about.
在外头的沙坪 Out here, on the sand flats,
都某些动物而言则是安全的住处 there is safe accommodation for some.
鞍背小丑鱼一家子 The family of saddleback clownfish
找到了一个绝佳的住处 have found an excellent home.
这只地毯海葵的触手 The tentacles ofthis carpet anemone
能杀死生物 can kill.
不过小丑鱼对它的毒液却有免疫力 But the clownfish are immune to the poison,
因此小丑鱼能够躲在里面避险 so they can shelter from danger.
反过来 In return,
小丑鱼也能帮海葵清理身上的碎片 the fish keep the anemone clean of debris.
正如所有的小丑鱼一样 As with all clownfish,
这家子发号施令也是条大雌鱼 the family is ruled by a big female.
她的白脸就说明了它是家里的老大 Her white face marks her out as the boss.
体型小巧的雄鱼得证明自己的价值 The diminutive male has to prove his worth,
所以它总是在不知疲倦的干活 so he works tirelessly,
将碎片残骸移开 removing debris
总体上熟练掌握家务 and generally keeping on top of the housework.
它最大的挑战 His greatest challenge
是要找到一个安全的位置 is to find a safe place
让一家之主能够安心产卵 where the boss can lay her eggs.
但是这里都没有结实的地方 But there's nothing solid here
能够让雌鱼产卵 for the female to lay them on.
附近的贝壳或许能凑合 A nearby shell could be the solution.
前提是它能够把贝壳搬到 If only he can move it
海葵的保护范围之内 to the protection of the anemone.
太沉了 Too heavy.
况且它也有自己的想法 Besides, it has a mind of its own.
这是只寄居蟹 The hermit crab.
但是在这里 海葵每天 But out here, twice a day,
要被潮水扫过两次 the anemone is swept by tidal currents,
这些潮水也会带来新的机遇 and they bring in new opportunities.
一个旧塑料瓶子 An old plastic bottle.
或许这个能派上用场 Perhaps, this will do.
不够重 Not heavy enough.
椰子壳 A coconut shell.
看上去正合适 It looks just right.
只不过它的位置离家太远了 But it's a long way from home.
它自己没有办法搬动椰子壳 And he can't move it by himself.
于是这对配偶就协力合作 So the pair now work together.
为了给椰子壳腾出空间来 A little adjustment to the anemone's tentacles,
它们将海葵的出手稍微调整了一下 in order to clear a space for it.
椰子壳被塞了进去 And the shell is tucked in.
雌鱼产了卵 The female lays.
它们总算有了个安全的婴儿房 A safe nursery at last.
它证明了自己 He has proved himself worthy
是一个称职的父亲 to father her young.
并给鱼卵受了精 And he fertilizes them.
现在它要小心翼翼的照顾这些鱼卵 Now he will meticulously tend the eggs,
让它们干干净净 健健康康地 keeping them clean and healthy
待上十天 然后孵出 until they hatch in 10 days time.
珊瑚礁生物会竭尽全力 Reef creatures go to great lengths
为自己的后代创造优势 to give their young a head start in life.
最能说明这一点的 And nowhere more so
当属世上最遥远的珊瑚礁 than on the remotest reefs in the world.
法属玻西尼亚 French Polynesia,
南太平洋的中心 the very heart of the South Pacific.
得益于它们与世隔绝的偏远位置 Protected by their isolation,
这里的某些珊瑚礁 some of the reefs here,
几乎还是处于原始状态 are still virtually pristine.
这条革鳞鮨已经在这个城市立足根基 This marbled grouper has made it in the city
并且已成年 and reached adulthood.
现在是时候交配了 Now, it's the time to mate.
为了找到配偶 它必须前往 To find a partner, he must head
这个珊瑚礁里最危险的地方 to the most dangerous part of this reef:
陡坡 The drop off.
在陡坡边上巡逻的是黑尾真鲨 Patrolled by grey reef sharks,
成百上千头鲨鱼 hundreds of them.
它们似乎在休息 They seem to be resting,
这只是暂时的 for now.
成千上万只革鳞鮨 Thousands of other groupers
已经聚集到了底下的海床上 have gathered on the seabed below.
这些雌鱼的肚子里几乎全是鱼卵 The females are almost bursting with eggs.
不过想要与其中一条交配的话 But to mate with one,
它必须先穿过 he must first get through the crowd
其他正在等待的雄鱼鱼群 of other waiting males.
它们脑海里 And they all have the same thing
想都都是同一件事 on their minds.
它们要做的 They jostle
就是为了尽可能地靠近雌鱼 to get as close as possible to a female.
这条雄鱼可能已经取得了领先位置 This male may have secured pole position,
不过在条件尚未成熟之前 but the female won't release her eggs
雌鱼不肯排出鱼卵 for him to fertilize,
让雄鱼授精 until conditions are just right.
现在鲨鱼们开始逐渐逼近 Now the sharks begin to close in,
它们察觉到重要时刻 sensing that the critical moment
即将来临 is approaching.
要涨潮了 The tide is beginning to turn.
这可能是产卵的绝佳时机 This could be the moment to spawn.
突然间 Suddenly,
雌鱼们都涌向了海面 the females rush up towards the surface
它们边游动边将成团的鱼卵排出 releasing their clouds of eggs as they go.
雄鱼追着它们 The males pursue them,
同时放出精子 simultaneously releasing their sperm.
革鳞鮨似乎 It's an act
准备为这一行为献出生命 the groupers seem prepared to die for.
机不可失 It's now or never.
珊瑚礁的栖居者个个都饥饿难耐 The fertilized eggs, will now be swept away
而这些受精卵就要从它们的 from the many hungry mouths
嘴边飘走 of the reef dwellers.
在这数亿的鱼卵密布海中 Most of the billions of eggs
其中大多数都将被吃掉 that cloud the sea, will be eaten.
不过至关重要的少数受精卵 But a few, a tiny but crucial minority,
将会找到另外一片珊瑚礁 will find another reef
并在那里安家定居 and make it their home.
不过今天 珊瑚礁 But today's coral reefs
正在面临着新的威胁 are facing a new threat.
海水的温度正在变高 The seas are warming.
上升了一两度的海水温度 A rise in temperature of just one for two degrees
仅仅持续几周 for just a few weeks,
就足以使珊瑚虫 can be enough to cause the coral polyps
排出身上的类植物细胞to eject their plant-like cells.
这两种情况发生时 When that happens,
珊瑚将会失去自身的颜色 the corals lose both their colour,
以及主要的食物来源 and their main source of food.
如果高温情况一直持续 If the high temperatures are sustained,
褪色的珊瑚很可能会死去 coral, bleached in this way, is likely to die.
近些年来 In recent years,
人们认为实际上一半的珊瑚礁 it's thought that half the world's coral reefs,
都受到了褪色的影响 have been affected by bleaching.
例如 从2016年起 Including, since 2016,
在澳大利亚大堡礁浅水区 around two thirds of the shallow water corals,
约三分之二的珊瑚都出现了褪色的情况 on Australia's Great Barrier Reef.
曾经一度熙熙攘攘的海底城市 These once crowded submarine cities,
渐渐的变成了荒凉的废墟 are reduced to bleak ruins.
许多栖息动物都变的无家可归 and many of their inhabitants, left homeless.
一些科学家预计 Some scientists predict
到本世纪末 that by the end of the century,
我们曾知晓的珊瑚礁城市 coral reef cities as we know them,
可能会从地球上消失 could be a thing of the past.
这些极其珍贵的海洋宝藏 Is there any future
是否还有未来可言呢 for these most precious of ocean treasures?
这终归得由 Well, that ultimately depends
海水的升温速度 on how fast they heat up,
和海水的温度决定 and how warm the seas become.
不过还是存在一丝希望的 And there is a glimmer of hope,
希望就在于 because of the way
珊瑚的自我繁殖方式当中 the corals reproduce themselves.
在一年中特别的夜晚 On one special night of the year,
满月将会催生奇异事件 the full moon triggers an extraordinary event:
那就是珊瑚产卵 The spawning of the coral.
整个珊瑚礁With extraordinary synchrony,
将同时开始繁殖 entire reefs reproduce.
数十亿的受精卵 Billions of fertilized eggs drift away
顺着洋流飘走carried by the ocean currents.
产卵的不仅仅是珊瑚 And it's not just the corals that spawn,
还有珊瑚礁上的许多栖息动物 so do many other residents of the reef.
一大群年轻的生命 A whole range of young
被海水席卷而走 are swept through the oceans,
它们将在空旷的地方安顿下来 ready to settle on a vacant site,
让复杂的 and bring back into existence
珊瑚礁群落 the complex community,
不断存续下去that is a coral reef.
我们或许不知道 We may not know
我们的海洋的未来会变成什么样 what the future hold for our seas,
不过珊瑚礁能够再生 but coral reefs can regenerate.
只要珊瑚礁存活着 As long as some reefs survive,
希望就能延续下去 some hope can remain.
幕后花絮
法属玻利尼西亚 French Polynesia.
与最近的主要陆地 Over 4,000 miles
相距六千多公里 from the nearest major land mass.
得益于捕捞限制的保护 Protected from fishing pressures,
大规模的革鳞鮨聚集现象 it's home to perhaps the last great
或许只能在这里看到了 gathering of marbled groupers.
我们总算到这里了 We're finally here.
我们已经花了好几天时间 It's taken quite a few days.
其实我们不能说这里是哪里 We can't actually say where "here" is,
他们吩咐过我们 because uh, we've been asked
不要提供具体的位置 not to mention the exact spot,
因为这里是保护区 because it's a protected area.
拍摄团队面临着巨大的拍摄难题 The team face a huge filming challenge
因为革鳞鮨通常一年只产一次卵 as the groupers normally spawn just once a year,
产卵时间不到一小时就结束了 and it lasts less than an hour.
节目顾问生物学家伊冯娜萨多维 The team's advisor is biologist, Yvonne Sadovy
研究鱼类 who's been studyingfish spawning
聚群产软现象已经有30多年了 aggregations for over 30 years.
这里的情况在过去数千年来 Here, it is close to the situation it has been
几乎没怎么变过 for thousands of years.
据我所知 It's pretty much the only place on the planet
估计全世界只有这里 that I'm aware of
我们才会看到那么多的革鳞鮨 where these groupers cometo gether
聚集在一起 in the numbers that we see here.
我真希望它们在那里 I really hope that they're there
如果它们不在那里 because if they're not,
那我们的工夫就白费了 then we've come all this way for nothing.
我们来的正时候 对吧 丹尼斯 We've got our timing right, haven't we Denis?
是的 Yes.
有信心吗 有 -Confident? Yeah.
他们没有失望 They're not disappointed.
丹尼斯拍摄革鳞鮨鱼群 Denis has filmed groupers gathering
有15年了 here for 15 years
他很了解革鳞鮨的习性 and has got to know their behaviour.
聚集在一起的 不只是革鳞鮨 The grouper aren't the only ones to be gathering.
这里的黑尾真鲨密度 It's the highest density of grey reef sharks
是地球上最高的 anywhere on the planet.
原始珊瑚礁就应该是这样子 This is what a pristine reef should look like.
随处可见捕食性动物 Lots and lots of predators.
革鳞鮨已经来了 现在的难题 With the groupers here, now the challenge
就是预测它们的具体产卵时间 is predicting exactly when they'll spawn.
为了判断产卵时间是否快到了 To judge if they're close,
伊冯娜在回看白天的拍摄镜头 Yvonne reviews the day's footage.
从画面上可以看到 From what we've seen here,
雄鱼是在向雌鱼求偶 the male's courting the female.
你把画面放慢些 When you can slow these things down,
这样就可以看到 this is when you begin to see
其中的细节 some of this detail.
要是让你打赌的话 If you were a betting woman
你会赌明天还是后天 would you bet on tomorrow?
我觉应该是明后天 I would say tomorrow or the next day.
我觉得产卵的时间就要到了 I mean I think they're pretty close.
由于潜水员只有六人 With only six divers,
团队人员不能一直待在水下 the team can't stay underwater all the time.
根据以往的经验 So, based on experience,
他们决定 they decide to dive
在满月潮水变化时潜入海里 on the full moon's changing tides,
人们认为满月潮水会协调革鳞鮨产卵 thought to help coordinate grouper spawning.
但是今年 But this year,
最大的潮差却是发生在夜间 the strongest tidal change is at night.
我们备好了装备 We're just kitting up
准备开始第一夜潜水 for the first night dive.
白天我们一直观察 During the day, we've been seeing
这一带的鲨鱼 sharks around this area,
但我们不知道 but we don't know
它们晚上会做出什么样的反应 how they're going to react at night.
你紧张吗 Are you nervous?
我们得小心点
因为我们现在要穿着防鲨服
携带笨重的装备到深海地下
黑尾真鲨是在夜间猎食 Reef sharks hunt at night,
所以为了以防万一 so the divers wear chain-mail suits
潜水员们都穿着锁子甲 戴着头盔 and helmets as a precaution.
一二三 出发 One, two, three, four.
潜水员 检查通信情况 Divers comms check, comms check.
听的很清楚 Receiving you loud and clear.
没有看革鳞鮨产卵的迹象 No sign of groupers spawning,
不过在黑暗中 but in the dark,
鲨鱼的态度有所转变 the shark's attitude has changed.
它们在捕猎 They're hunting.
鲨鱼在使用电感受器捕猎 Using electro-reception to hunt,
哪怕是最微不足道的电刺激 sharks are tuned to even the smallest
它们也能感应到 electro stimulus including the cameras.
考虑到水流在上涨 With the current building,
现在要是和海上的人员失去联系 now is the worst possible time
那情况估计是再糟糕不过了 to lose contact with the surface.
我们身处荒僻 We're in the middle of nowhere.
我们不知道下面发生着什么事 We have no idea what's going on down there.
我们只能听到断断续续的通信声 All we can hear is broken communication.
他们没有看到产卵的迹象 离开了海底 With no sign of spawning, they end the dive.
团队成员决定养精蓄锐 The team decide to save their energy
为下一次潮汐做准备 for the next change of the tide.
黎明时分到来 At dawn,
他们为期待的一刻做好了准备 they prepare for what they hope
等待已久的产卵现象 will be the spawning event
将在这一时刻出现 they've all been waiting for.
坏消息 全没了 Bad news, we still are...
不过仅仅20分钟后 But after just 20 minutes,
潜水员们回到了海面上 the divers are back on the surface
将噩耗告诉了团队成员 with some devastating news for their crew.
全没了 We missed it.
没准它们昨晚就产卵了 Maybe they spawned last night.
天啊 我都不知道该说什么好 I don't... Oh, God, I don't know.
他们迟了一步 The team were too late.
我估计 So my guess would be
我们是迟了几个小时 that we've missed spawning by a few hours.
它们可能达到了 And possibly, it's that they just reached
某种临界数量或者临界密度 some kind of critical mass or critical density
所以就稍微提前产卵了 and spawned a little bit early.
第二年 The following year,
伊冯娜回到了法属波利尼西亚 Yvonne returns to French Polynesia,
希望对革鳞鮨展开深入研究 hoping to learn more about the grouper.
今年 This year,
劳伦巴列斯塔和他丰富的团队 Laurent Ballesta and his experienced crew,
接受了挑战 take on the challenge.
考虑到这次潜水员要比上次多得多 With many more divers,
他们想了个新办法 they have a new approach
他们准备让劳伦特 and they plan to have Laurent on watch
一直待在水里观察 in the water constantly.
(法语....)
今年 他们持续监控了And this year, after hundreds of hours
数百个小时后 of continual monitoring,
总算等到了决定性的一刻 they have captured the defining moment
他们拍摄下了这惊人的一幕 of this astonishing event -
一大群革鳞鮨产卵的情形 the mass spawning of the grouper.
我们有幸 We have the privilege
能够亲眼看到 to be able to watch this process
这一幕的发生 actually occurring.
这真让人很激动 Uh, and that's a real thrill.
这对生物学家来说They're really important
真的非常重要 for the biology of the animals.
(法语)
多亏了这两个团队 Thanks to a combined team effort
共同付出 from both crews
多亏了伊冯娜的多年研究 and Yvonne's research over many years,
我们终于能够向世人讲述 we could at last, tell
革鳞鮨的精彩故事 the marbled groupers' incredible story.
下期节目 Next time,
我们要前往无边无际的远洋 we head into the vastness of the open ocean.
为了能在这荒芜的大海里生存下来 To survive in this blue wilderness,
有些动物以速度取胜 some are fast,
有些动物则采用了致命的策略 others use deadly strategies,
还有少数一些动物是依靠 and a few rely
亲密的家人求生 on the closeness of their families.