八点最热报 | 说到海豚，相信并不是很多人亲眼看过，更不用说，亲眼看到“会发光”的海豚。这些海豚，近期，就出现在美国加州，他们在海中遨游时，身上会伴随幽幽的蓝色荧光。不过，这些海豚会发光，并不是因为他是新物种，而是所谓的“蓝眼泪”所导致的。（主播：蔡心惠）
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00:00 Before watching the video, I remind you that there is more content on the Hotpot website.
00:03 Speaking of dolphins, I believe some people may not have seen them with their own eyes,
00:09 let alone seeing dolphins that glow.
00:12 These dolphins have recently appeared in the United States.
00:15 When they swim in the sea, their bodies will be accompanied by a dim blue glow.
00:20 But these dolphins glow not because they are a new species,
00:24 but because of the so-called blue tears.
00:27 What is blue tears?
00:29 It is a monocell organism that lives underwater,
00:32 also known as a fake algae.
00:34 Although the name contains the word "algae", it is not a plant.
00:37 It is due to the fact that animals and plants must be in the sea to survive.
00:42 After leaving the sea, they can only survive for less than 100 seconds,
00:46 and the blue light it emits will disappear.
00:49 Life ends there.
00:51 In general, blue tears only appear in tropical and sub-tropical regions.
00:55 But California is special.
00:57 You can only appreciate it in late summer and early autumn.
01:00 Many people also cherish the opportunity to go out to sea to watch this rare scene.
01:05 The waves gently hit the night,
01:08 and the blue light was emitted.
01:10 The dolphins swim in the water,
01:12 and the light is radiating from their bodies.
01:13 It looks romantic and novel under the starry sky.
01:16 The rare scene attracted many tourists to come to the island.
01:19 This is not a video processed by post-production special effects,
01:21 but a rare floating creature called fake algae in the south of California.
01:25 Under the effect of light and water, a large amount of algae appeared in the blue tear scene.
01:29 The guide said that blue tears used to take at least five years to see.
01:33 Now it happens several times a year.
01:35 I believe it is related to climate change.
01:37 Years ago, it would maybe happen once every five, ten years.
01:41 And now it's happening a couple times a year in spurts.
01:45 So really, why this is happening so often, maybe due to climate change?
01:50 I can't really speak to that, but that's definitely one theory.
01:54 The beautiful behind the scenes is a hidden threat.
01:56 Because blue tears are an abnormal phenomenon that pollutes the ocean and threatens marine life,
02:00 it is a kind of environmental pollution warning.
02:02 Over time, it will cause some microorganisms in the ocean,
02:05 such as microorganisms, to increase reproduction and gather,
02:09 and cover or stick to the breathing organs of marine animals,
02:12 causing animal breathing difficulties.
02:15 But this phenomenon did not last long.
02:17 Once the dolphins stop swimming and the sea is quiet,
02:20 the fake algae will not be disturbed,
02:21 losing about 100 milliseconds.
02:24 The blue glow will also disappear.
02:26 Blue tears make the glowing dolphins a hot spot for tourists to chase.
02:29 But behind this brief scene,
02:31 who will be the one to whisper in the ocean's ear?
02:34 [Ocean sounds]
02:37 [Music]
02:41 [Music fades]
02:44 [BLANK_AUDIO]