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The deep ocean has other sources of light than astronomical bodies, though.
除了天體，深海還有其他光源。
Three-quarters of marine organisms off the coast of California produce their own, and that is probably true in most oceans,
加利福尼亞沿岸3/4的海洋生物會發光，大部分海洋情況都是如此，
says Steve Haddock of the Monterey Bay Aquarium Research Institute.
蒙特雷灣水族館研究所的史蒂夫·哈多克說道。
Recently, Dr Haddock brought back the first full-colour high-definition videos of bioluminescence in the abyss.
最近，哈多克博士帶回了關于深海生物光的首部彩色高清錄像。
At a meeting in Monterey, in September, he offered a preview. Sea cucumbers, normally pale and beige, rippled with waves of blue bioluminescence.
在九月蒙特雷的一次會議上，他播放了該視頻。海洋海參類通常是淺色和淺棕色的，它們會微微泛起藍色生物光。
A shimmery gold viperfish, when disturbed by Dr Haddock's remotely operated submarine, suddenly switched its lights on, covering every detail in its skin.
閃閃發光的金色蝰魚受到哈多克博士的遠程操控潛水艇打擾后，突然發光，全身每一寸皮膚都被光覆蓋。
A jellyfish displayed swirling blue pinwheels. A brittleworm glowed yellow.
水母亮出了自己的藍色旋轉風車。海蛇尾發出黃色的光。
Dr Haddock hopes his new submarine borne camera will grant him a better understanding of how animals use bioluminesce in the deep.
哈多克博士希望他的潛水艇運載攝影機可以讓他對深海動物如何利用生物光有更好的理解。
Some predators, for instance, employ glowing lures to attract prey. Others produce pulses of light to illuminate their targets
例如，一些捕食者利用發光的魚餌吸引獵物。其他捕食者會產生脈沖強光照亮它們的目標
—in which case, from the prey's point of view, having an invisibility cloak has obvious advantages.
—在這種情況下，從獵物的角度來講，擁有一件隱身斗篷就占據絕對優勢。
Some organisms use bioluminescence as a defence mechanism. Lighting up an attacker can make it more vulnerable to the attentions of others.
一些生物體利用生物光作為一種防御機制。照亮襲擊者可以讓它們不那么容易引起其他生物的注意。
And there are times when switching the lights on is a better camouflage than absorbing light.
有時產生光是一種比吸收光更好的偽裝。
Watases lanternfish are generally hunted by predators that strike from below.
渡瀨眶燈魚通常會被來自下方的捕食者襲擊捕獲。
It may seem surprising, therefore, that among the light-producing cells distributed across their bodies
這看似讓人意外，在分布它們全身的發光細胞中
they have a set that point downward from their bellies towards the sea floor. They also, however, have light-sensing cells pointing upwards on their backs.
有一種細胞從它們的肚皮處向下指向海底。但它們背部還有一種光敏細胞指向上。
At the meeting in Monterey José Paitio, of Chubu University in Japan, described how the two sets of cells work together.
在蒙特利會議上，來自日本中部大學的 José Paitio描述了兩類細胞是如何合作的。
The dorsal ones sense the colour and intensity of light filtering downwards.
背部細胞感知顏色以及下方過濾光的強度。
The ventral ones respond to that signal, generating exactly the amount of light required to blend in,
腹部細胞對這種信號做出反應，產生混合所需的確切數量的光
so that the fish disappears from view when seen from underneath. A truly bright idea.
當從下邊往上邊看時，這條魚就消失在了視野中。這真是個好主意。
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