Could you survive the real Twilight Zone? - Philip Renaud and Kenneth Kostel

583,225 views ・ 2021-05-25

TED-Ed


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翻译人员: Bella He 校对人员: Helen Chang
00:08
You're traveling deep beneath the ocean's surface,
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你遨游在大海深处,
00:11
where faint lights flicker and toothy grins flash.
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这里时有微光闪烁,时有利齿闪现。
00:14
You are now entering... the Twilight Zone.
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你即将进入……暮色带。
00:18
Your mission is to survive these depths
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你的任务是在这深海之中生存下来,
00:20
and journey to the surface after sundown to feed.
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日落后游向海面觅食。
00:24
You may now pick your player.
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现在你来选择角色。
00:26
Just kidding— you don’t have a choice.
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逗你玩呢——你没有选择。
00:28
You’re a hatchetfish.
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你是条小银斧鱼。
00:30
And almost everything else is trying to eat you.
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几乎所有生物都试图吃掉你。
00:34
The tools at your disposal are a uniquely shaped body,
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你独特的身型、反光的鳞片 和腹中能发出光亮的部位
00:37
shiny scales, and glowing spots on your belly.
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是你能利用的手段。
00:40
You’re going to need a lot of skill and a little luck.
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你将需要动用许多技巧,借用一点运气。
00:44
Your first challenge is to begin your upwards trek.
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你迎来的第一个挑战是向上远游。
00:47
Your swim bladder allows you to precisely control your buoyancy.
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鱼鳔让你能够准确控制你的浮力。
00:51
Come nightfall, you slowly fill it up,
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夜幕降临,你往鱼鳔里慢慢充气;
00:54
becoming less dense and rising towards the surface.
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自身密度变小,渐渐浮向水面。
00:57
You can’t swim fast, but your narrow build makes you maneuverable.
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虽然你游得不快,但窄小的身型 保障了你的灵敏度。
01:02
This is especially important since predators could spring out of the darkness
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这点极其重要,鉴于掠食者随时有可能
01:06
at any moment.
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从黑暗中冲出来。
01:08
In fact, a fangtooth is gliding beneath you.
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实际上,一条尖牙鱼在你身后游过。
01:11
It has the ocean’s biggest tooth-to-body size ratio.
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它有着水生生物中最大的头身比。
01:15
Food is hard to come by in the Twilight Zone,
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因为暮色带内食物稀缺,
01:18
so predators have fearsome adaptations to make every attack count.
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所以掠食者经过惊人的进化, 以保障每一次都是有效攻击。
01:23
The fangtooth’s skin is ultra-black:
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尖牙鱼拥有着超黑肤色,
01:26
it reflects less than 0.5% of the light that hits it,
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表皮的光反射率低于 0.5%,
01:30
making this fish particularly hard to spot.
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使得发现这尖牙鱼变得极其困难。
01:34
Fortunately, the bioluminescent organs lining your belly are regulated
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幸运的是,排列在腹部的发光器官 调节亮度,
01:38
to match the intensity and pattern of the faint light from the ocean’s surface.
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以与来自海洋表面的微光强度 和特征相匹配。
01:43
This counter-illumination disguises your silhouette.
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消光剪影掩饰你的轮廓。
01:47
So when the fangtooth gazes upwards, you’re almost invisible.
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因此尖牙鱼往上看时,你几乎隐形了。
01:52
A bright spot appears in the distance.
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远处出现一道光。
01:54
You go to check it out, but something’s looming in the darkness.
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你前往查看,但有什么潜伏在黑暗中。
01:57
The light is a bioluminescent lure belonging to an anglerfish.
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这道光是琵琶鱼的荧光诱饵。
02:02
You dart away before it quickly opens its jaws,
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在它猛然张开血盆大口前, 你迅速躲开;
02:05
sucking in a hapless fish that got too close.
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它此刻吸入离它很近的倒霉小鱼。
02:08
Another narrow escape, but you’re nearly there.
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又一次死里逃生,但这次离死神很近。
02:11
Although more than 90% of deep-sea creatures are bioluminescent,
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尽管 90% 以上的深海生物都发光,
02:15
only one group produces the color red: dragonfishes.
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只有一类产出红光——海蛾鱼。
02:19
One of them is near.
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有一条正在靠近。
02:21
Because red light is quickly absorbed by seawater,
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由于海水快速吸收红光,
02:24
most deep-sea inhabitants can’t see it.
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大多深海生物看不见红光。
02:27
The dragonfish emits red light from organs by its eyes,
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海蛾鱼通过眼旁的器官发出红光,
02:31
using an invisible headlight to locate unsuspecting prey
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利用隐形的头灯去定位 毫无戒心的猎物,
02:35
that its scoops into its cavernous jaw.
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舀进牠巨穴似的下巴。
02:38
You can’t see your enemy,
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你看不见敌人,
02:39
but your silvery, mirror-like scales scatter and soften direct light,
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但如镜子般的银色鳞片发散、弱化直光,
02:44
keeping you hidden.
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使你保持隐形状态。
02:46
After three close calls, you reach... the Photic Zone.
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经历三次险入“虎”口, 你终于抵达透光带。
02:50
You’ve just participated in the world’s largest migration.
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就在刚才你参与了世界上 最大型的迁徙。
02:53
It takes place every night as trillions of organisms rise from the ocean’s depths
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迁徙每晚都会进行—— 数以万亿计的微生物就着夜色
02:58
to enjoy the surface’s rich resources under the cover of darkness.
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从深海向上浮以享有表层丰硕的资源。
03:02
The payoff is huge.
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回报十分显著。
03:04
Here, your light-sensitive eyes take in a buffet of small crustaceans
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这里,你光敏发达的双眼捕捉到 各种小型甲壳动物
03:09
and gelatinous zooplankton.
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和胶质浮游动物。
03:11
During the day, phytoplankton use sunlight to turn dissolved carbon dioxide
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白天,浮游植物利用阳光将 溶解的二氧化碳
03:16
into energy and build their own cells.
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转化为能量,合成自身细胞。
03:19
They become food for small grazers, forming the base of the food web,
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浮游植物成为小型草食动物的食物, 这形成食物网的基础,
03:24
which extends back down to the Twilight Zone— and beyond.
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食物网向下延伸至暮色带, 甚至到更深处。
03:28
Organic matter generated up here— like bits of skin, poop, and dead animals—
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在透光带这里产生的有机物, 如:皮屑、排泄物和死去的动物,
03:34
eventually sinks or is transported in the stomachs of animals
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最终会下沉或进了动物的肚子里,
03:37
returning from their nightly migrations.
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这些动物在夜徙归途中带回。
03:40
These materials then feed the creatures below that don't migrate.
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然后,这类物质成为 不迁徙的生物的食粮。
03:44
This ensures that some of the carbon from the atmosphere
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这样确保了部分来自大气层的碳元素
03:47
is locked away in the ocean for hundreds of years to come.
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在未来几百年仍存于海洋之中。
03:51
That's why this process is known as the biological carbon pump.
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因此,这个过程俗称生物碳泵。
03:56
Without it, there’d be much more carbon dioxide in the atmosphere,
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如果生物碳泵不存在,大气层中 二氧化碳含量将大大升高,
03:59
where it contributes to climate change.
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进一步加剧气候变化。
04:02
Your avatar, the hatchetfish, is part of this crucial process.
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你的阿凡达,那条银斧鱼,就是 这不可或缺过程中的一环。
04:06
Your first quest is complete,
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你完成了第一次探险,
04:08
but you must repeat this journey every night for the rest of your life.
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但你须在余生中的每一晚 反复进行同样的征程。
04:13
As the sun rises, the surface becomes dangerous,
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太阳升起,表层变得危机四伏,
04:16
and you descend back into the shadows of the Twilight Zone.
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你随即下潜到昏暗的暮色带之中。
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