Two thousand kilometers away, across the ocean, in the United States, off San Francisco, California, near Angel Island and Alcatraz Island, is a famous whale watching destination.

And here, there is also a Caltech oceanographic research ship, the Georgia, floating quietly on the sea.

The California Institute of Technology, is one of the best private universities in the United States, and was even considered the best university in the world at one time.

The university has a very small population, with less than 1,000 undergraduates, 1,200 graduate students, 300 professors, and 600 research scholars.

In terms of numbers, it may not be as good as a college at Dongyuan University.

However, in such a small school, 38 alumni and professors have won the Nobel Prize 39 times, and if other researchers are included, the number is as high as 74.

Not to mention other international awards such as the Fields Medal and the Turing Award.

It can be said that this small school, with a total of less than 3,000 people, has gathered the world's top geniuses and top researchers, and everyone is a real powerhouse.

Caltech's physics, planetary science, and earth sciences are among the best in the world.

All the protagonists in the popular American drama "The Big Bang Theory" work in this school.

At this very moment, Jeffrey Conona, a professor of earth sciences, marine sciences and marine biology at Caltech, is listening to some recordings that he has just collected.

Jeffrey Conona is a world-renowned oceanographer, he has a deep knowledge of marine geology, marine biology, etc., and he is also very accomplished in hydroacoustics, because hydroacoustics is the most powerful weapon in the study of the ocean.

And he has always maintained a very strong interest in whales, because his father, who is an oceanographer specializing in whales, now lives in a sanatorium in San Francisco because of AD, and he often records many whale songs and takes them home for the old man to listen to.

Although the doctor said that the old man's brain was very degenerate, every time he heard the whale's song, it still made the old man smile and even recover some memories.

Perhaps because of the influence of the old man, Jeffrey's graduate thesis was related to whales, and he basically conducted some follow-up research on his previous research and wrote some papers every year.

And at this moment, his expression is extremely strange.

Wait, what's going on?

Is this a whale song?

That's not right!

"Wong, when did you record this?" said Jeffrey, calling one of his students.

The student, known as Wang, looked at his record and said, "This was recorded at 22:47 last night, and it lasted about 16 minutes......

"Have you ever heard?" asked Jeffrey.

"Uh, no, what's wrong?" said the king blankly.

Wang is a young, bright young Asian American, a third-generation immigrant and a student whom Jeffrey loved very much.

But at this moment, Jeffrey had to wonder if Wang was trying to play tricks on him.

But looking at Wang's blank expression, Jeffrey felt that Wang should not risk angering himself and being hanged in the course of playing this joke with himself.

"Put down the drag sonar. Jeffrey ordered, then put on his headphones again.

The Georgia dragged a long drag sonar, and the sonar kept sinking and sinking.

Jeffrey also kept wearing headphones, listening to the noisy sound, until the sonar suddenly seemed to break through a membrane, and it was quiet for a moment, and the next second, the surrounding sounds suddenly changed.

"Stop!" Jeffrey ordered.

The towed sonar stopped sinking, and it was silently suspended at a distance of 200-300 meters below the seawater.

It entered the deep-sea channel.

Deep-sea vocal sound is a very special acoustic phenomenon in the deep sea.

In seawater, the speed of sound propagation changes with pressure and temperature.

At a certain depth, the sound propagates fast above and slower due to temperature and pressure.

After a certain tipping point, the sound propagation speed will be fast below and slow propagation speed above.

And sound will always bend from the fast side to the slow side of the speed of travel.

So, near this "tipping point", the sound bends back and forth without being lost into the air or absorbed by the seabed.

The speed at which the sound decays becomes extremely slow.

This depth is called the "deep-sea channel".

This feeling is like the middle of the ocean, where there is an optical fiber of sound, which constantly bounces back and forth and refracts the sound, allowing the sound to travel to infinity.

At other depths, even the sound of cetaceans may only travel hundreds of kilometers before it is completely attenuated.

But in the "deep-sea channel", the sound can travel tens of thousands of kilometers away, or even circle the earth.

The deep-sea channel is the "telephone line", "wireless broadcast", "chat room" and "world channel" of countless sea creatures.

Whenever you put a hydrophone into the deep-sea sound, it is like entering a world of sea creatures.

Of course, most of the meaningful sounds are made by marine mammals.

There are humpback whales singing, killer whales scolding the street, dolphins teasing young ladies, and sperm whales purring and diving to listen to the excitement.

And at this moment, the deep-sea sound of the world is dominated by a whale.

It adds a completely different melody to the traditional whale song.

This melody made the other humpback whales feel very new and a little overwhelmed.

The humpback whale was humming this melody over and over again very stubbornly.

Cheerful, demonic, and a bit of brainwashing.

This is definitely not the song of a whale, this is the music of humans.

It has distinctly human rhythmic characteristics, with keys, rhythms, and pitches.

It's hard to imagine that this is a whale sound.

Why does a whale sing human songs?

Jeffrey sat in front of the hydrophone all afternoon, not moving.

Over the course of the afternoon, he heard more and more humpback whales and added the melody to his whale song.

Whale songs are changing all the time, just like the cetacean pop scene, always innovating.

But he had never seen the change of the whale song so fast.

In one day, this melody has become the most popular song of the deep-sea wheat lord humpback whales!

What's going on here?

Jeffrey felt as if he had discovered something amazing!

In the cabin, Wang wondered if his teacher had just sat down.

He came in and took a look and found that the teacher was still sitting.

Came in again, still sitting.

Just as Wang was about to reach out and touch the teacher to see if he was still breathing, Jeffrey jumped up suddenly: "Wang, quick, I want to write a paper!"

"I feel like I've found something amazing!"

If this discovery is too late, I am afraid that it will be snatched away by others!

And why do cetaceans sing human music?

Is this an example of further human impact on the ocean?

And why do humans affect cetaceans?

Jeffrey already has a myriad of conjectures and theories, and he can't wait to get this paper out first!

He can imagine that this paper can cause a sensation!