八点最热报 | 最近，一个由南丹麦大学主导的科学团队，在《自然》期刊上发表研究结果，宣布他们通过研究3头搁浅后死亡的鲸鱼尸体后，找到可以让鲸鱼在海中发出响亮声音的“语音盒”。而鲸鱼的这种特殊发声结构，经过数千万年不断地进化，让他们可以在茫茫大海中找到配偶。（主播：萧慧敏）
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00:30After studying the corpse of a goldfish that died after being cut off three times,
00:34we found a voice box that allows the goldfish to make a loud sound in the sea.
00:40After tens of millions of years of evolution,
00:44the special structure of the goldfish allows them to find a mate in the vast ocean.
00:50What is the sound of a goldfish?
00:53Let's listen to it with the camera.
00:56The sound of a goldfish
00:59The sound that sounds very similar to the sound of an engine is actually the sound of a goldfish.
01:05How goldfish make a sound in the sea has always been a mystery.
01:08However, a group of scientists in Denmark recently announced that they have found a special sound structure in the goldfish body.
01:14People have known that whales make sounds since the 70s roughly,
01:18and since then people have been wondering how do they do this, how do they make sounds.
01:21We've now shown that their larynx or voice box still works as a sound source,
01:25but it works in very different ways as we use it.
01:27Professor Ellermans explains that the structure of a goldfish's voice is a U-shape with a layer of fat on top,
01:33which is different from ordinary mammals.
01:35This special structure allows the goldfish to suck in a lot of air to make a sound,
01:40while also avoiding sucking into the sea.
01:42It is very important to them whether the goldfish can make a sound,
01:46because this is the only way for them to find a mate in the vast ocean.
01:59Although goldfish can make a sound, it is only limited to a certain frequency,
02:02and this frequency coincides with the sound produced by the ship.
02:06This means that the sound produced by sea transportation
02:09has a serious impact on the communication ability between goldfish,
02:12and has a huge impact on the goldfish's survival.
02:16The best way for them to find each other is by sound.
02:18So if we add a bunch of noise to the oceans, basically on a global scale,
02:22this will really reduce the areas over which these animals can communicate,
02:25and make it harder for them to find each other.
02:27Professor Ellermans says that this study not only proves that the sound produced by the ocean
02:31can interfere with goldfish's communication,
02:33and harm the goldfish's ecosystem,
02:35but also allows humans to have a closer understanding of these giant marine mammals.
02:46For more UN videos visit www.un.org