How long does it take for a person to be declared dead when they are missing?

There are different regulations on this issue in different countries, generally about three or five years, and it is not uncommon for shorter or longer ones.

So, how long has a whale been missing and can be considered dead?

Hardly.

The whale, known as "52 Hz" because of its unique vocal band, has been around for almost 30 years since it was discovered in 1989, and is at least in its 30s.

Whales generally have a long lifespan, much longer than 30 years, but there are so many things that can happen in 30 years.

And as early as 2004, 15 years after it was discovered, it was not heard again.

Remembering that some countries in the world are still going to sea to hunt whales, whalers do not discern the sound of their targets before shooting their harpoons, for them, whales are whales, nothing more than a huge mass of flesh and blood, there is no difference.

This can't help but make people worry about the fate of 52 hertz.

Zhang Zi'an had read its story before, but when he learned that it had not been seen for many years, he also tended to think that it was dead, either from old age or from natural causes, such as encountering a large group of killer whales in the sea, or experiencing health problems, or of course, dying at the hands of whalers.

When he met the mysterious giant whale, he had already forgotten this story in the corner of his memory, and did not realize that the other party might be 52 hertz at the first time, after all, the ocean is too big, and there are many giant whales in the ocean, how could he meet it so coincidentally? How could he see a giant whale and think it was 52 hertz?

You know, people have only heard its voice before, and no one has ever seen its real body, and even what kind of whale it is is not completely sure.

The only way to determine the identity of 52 hertz is to judge by its sound, and other methods are unreliable.

Just now Zhang Zi'an played the voice of the giant whale on his laptop, and found that its sound frequency band was very unique, located between 45 and 50 Hz, and did not immediately associate it with 52 Hz, but thought it was a mistake to record the voice of another whale nearby, but fortunately, he immediately denied his speculation, and then recalled the related rumors on the other side - the sound of 52 Hz was 52 Hz when it was first discovered, but then it slowly became more muffled, just in line with the range of 45 to 50 Hz.

Previously, 52 hertz often wandered from the west coast of the United States to the waters of Alaska, that is, the Northeast Pacific, could it have ventured to the completely unfamiliar Western Pacific, that is, near Northeast Asia, after searching for its similar kind to no avail?

The possibility exists, after all, it is an alternative.

Since its arrival in the western Pacific, scientists on the West Coast of the United States have lost track of it.

The long coastline of Northeast Asia, where many places are desolate and backward areas, is not covered with an accurate underwater listening system, and it is normal that its sound is not recorded.

It may be due to some kind of opportunity, for example, it heard Shihua's singing, although it may not understand, but it also felt the loneliness in the song, so it followed the song to the sea outside Binhai City, and lingered nearby.

The closest route between the pet store and the sea is the beach that Zhang Zi'an frequents, so it always appears there and meets Zhang Zi'an unexpectedly.

What is it waiting for?

What is it expecting?

After figuring it out, before Zhang Zi'an could figure out how to deal with this discovery, he was tossed by Shihua's cry......

Shihua, Fina, Lao Cha and π all listened very attentively, as if with Zhang Zi'an's narration, they also followed the loneliest whale to swim through the vast Pacific Ocean, witnessed countless magnificent beauties, witnessed countless times in the ocean, and called to their fellow kind countless times but never got a response.

It was swallowed up by bottomless loneliness, as if abandoned by the whole world, but not disheartened.

In particular, Shihua is the most deeply touched, she is as unique in the true sense as it is, and there is no one like her in the world.

She wept silently again.

Today she doesn't know how many times she has shed tears, this time not for herself, but for the fate of 52 hertz, for its 30 years of tireless searching, for its courage to cross the ocean.

No one can imagine how it spent 30 years alone.

Lao Cha sighed: "It can be said: thirty merits and fame, dust and earth, eight thousand miles of clouds and moon...... It has traveled all the way, only the clouds and the moon have been with it, and who knows the hardships in this journey?"

Even Fina, who usually doesn't mince words, nodded in approval.

"That ......" Shihua raised his head, crystal tears rolling in his eyes, and choked up, "What can we do for it?"

"Some people speculate that 52 hertz may be the offspring of a cross between a blue whale and a fin whale, and after seeing it with my own eyes, I think this speculation is very reasonable," Zhang said. Its greatest wish should be to find another whale of its kind that is similar to it, but this is difficult, and even if there is another whale that is also a half-breed, it may not use the 45 to 50 Hz frequency band. ”

The courtship mating of whales is quite vegetarian and undisciplined, as long as the body size is relatively close, even different species of whales may spark passion.

There have been rumors of hybridization between different species of whales for a long time, but due to the vastness and depth of the sea, examples that can be confirmed are extremely rare.

The Discovery Channel once told an example of a researcher who came to Fuso and bought whale meat from the Fuso market, with the intention of studying the DNA of the whale meat to trace its origin, only to find that the DNA of the whale meat indicated that it was a mixed race, from a blue whale and a fin whale.

It is a pity that a rare mixed-race whale was sent to Fuso's table in this way.

However, in addition to being similar in size, another reason why blue whales and fin whales are able to mate and give birth to hybrids may be that they both have a sound frequency range of about 20 Hz, so they can find and communicate with each other.

It's not uncommon for whales to emit sounds of 45 to 50 hertz, but those whales are a far cry from 52 hertz...... If you insist on mating, the picture is too beautiful to imagine.

Zhang Zi'an continued: "It is almost impossible to find the same kind of 52 Hz, and we can't help it find it...... However, this does not mean that we can't do anything, although we can't help it find its kind, but we can rekindle hope. If you want to help it, there's only one way. ”

"What's the solution?" Shihua asked eagerly.

Zhang Zi'an didn't sell it, and replied directly: "You can learn its singing voice, and then tell it with the same vocal segment - don't be afraid, you are not alone." ”