AISubs v3.5
Now, the king of the sea, shark, is in a boom!
It became a hot topic on social media, and shark- related goods are also very popular!
But when it comes to sharks, I have a scary image of them...
There is no shark that eats people.
Oh, really?
There is no shark like that.
Are there two types of sharks?
The evolved sharks have amazing abilities!
We will approach the mystery of sharks that we still don't know yet!
Stand up! Bow!
Thank you for your hard work!
Today's special instructor is Asako Yumaguchi- sensei!
As the only shark journalist in the world, she is the one who hosts and studies sharks all over the world!
Do you like sharks, Sensei?
I love them!
Wow! You have sharks all over your house!
Wow! I have sharks all over my house!
I have sharks all over my house and my house is full of them!
I love them!
What do you mean?
My house is called "shark house" and there are sharks all over my house!
You are the only shark house instructor in the world, aren't you?
That's what I call it!
Yes!
There is also a shark jaw specimen on the wall and there are about 30 of them in one room!
Wow!
Do you sleep there?
Yes!
Don't you have weird dreams?
No!
I have fun dreams!
Fun? I'd like to see it!
Yes! I always dream about it!
In recent years, books and goods related to sharks have become popular and there are more and more people who like sharks!
Speaking of the beginning of the shark boom...
In the first place, "shark" means "jaws" in the 1970s.
However, after that, the image of "shark" became quite scary.
For example, when sharks come out in the sea bath, it is often said that they ban swimming.
However, in fact, there is no shark that eats people in the first place!
Oh, is that so?
There is no shark like that!
Actually, there are only cowardly and cute sharks, so I don't want you to think like that!
I thought sharks ate people!
There is no shark that eats people!
In the first place, aren't sharks animals that attack people?
That's right!
Sharks don't attack people anymore!
Oh, I see!
For example, there is a shark called "itachi shark" in the south of Okinawa.
Its favorite food is "turtle" or "sea turtle".
When eating "sea turtle", sharks probably look up from the sea and recognize prey.
At that time, a surfer who is paddling...
Oh, a surfer!
Yes, a surfer's shoulder probably has a similar silhouette, so it is presumed that he has bitten it by mistake!
Isn't it a little scary when your favorite food is "sea turtle"?
It's a big, hard thing!
Well, if you look at it from below, it looks like a turtle, or if you look at it from the side like this with this serving board, it's like this.
That's right. Also, since sharks tend to eat weak fish as much as possible,
there is also a theory that the rattling of the paddle is similar to the vibration of weak fish.
That's why sharks are attracted.
I see. Well, let's tell you about the charms of sharks today. First of all, here it is!
Amazing! Sharks! An unknown ecosystem!
How many types of sharks are there?
According to a 2014 paper, 509 types of sharks are confirmed.
509?!
How many sharks are there that are likely to attack humans?
It is said that it is less than 10%.
What is the largest type of shark?
It is a human-shark.
It grows up to 17 meters in length.
It is huge!
A human-shark is very large,
Is there a small type of shark?
Yes, there is.
It is the smallest shark in the world.
"Tsuranaga-obi-no-same" (Tsuranaga-obi-no-same)
It is this palm-sized.
It is black and small,
but if you look closely, you can see shark gills and teeth are jagged.
It is a common shark.
Can it eat plankton?
Yes, it is often mixed with plankton feed,
so it is thought to mainly eat plankton.
Let's take a look at the unknown ecosystem of sharks.
First of all, this one!
Shark gills change every two or three days.
Now, what is it?
Now, Chihi!
"Hone-no-shitsu" (bone-quality)
What happens every two or three days?
It comes out of its mouth and goes in.
Gross!
What does that mean?
It comes out of its mouth and goes in.
What does that mean?
It comes out of its mouth and goes in.
Now, Uuka!
Teeth!
Shark gills change every two or three days.
Shark gills are a strong image.
Now, let's see the correct answer!
The correct answer is...
Shark gills!
Uuka is correct!
Shark gills change every two or three days and change until they die.
In many sharks, 70,000 shark gills change in their lifetime.
That's amazing!
Shark gills change every two or three days and change until they die.
That's right!
When the front tooth comes out, it looks like it's on a muscle.
The muscle comes out little by little like a belt conveyor from behind.
And the tooth that's on it comes out little by little like this.
Oh, it comes out like this!
That's amazing!
I see!
Now, depending on the type of shark, the tooth type also has its own characteristics.
Let's take a look!
Wow!
There are various types of toothed sharks, but they are largely divided into these three types.
First of all, let's look at this blue shark.
Yes, this blue shark is called "moon-pointed hawk".
For example, like a hawk, it has no jagged teeth and only pierces.
Therefore, it is a very suitable tooth for piercing and swallowing large fish.
The one next to it is called "jagged knife-shaped" and it has a lot of jagged teeth on one shark's teeth.
On the teeth itself?
It doesn't have jagged teeth on the teeth itself.
And in the case of blue sharks, since the teeth are thick, even a sea turtle can stick out like this.
Therefore, it is a tooth that can be used like a khan-kiri.
Does it eat fish or sea turtles?
Yes, both sea turtles and mammals.
Also, when you dissect a shark, you can also find "sea birds" and "chickens".
"Sea birds"!?
Yes, anything.
And for cat sharks...
What kind of shark is it?
It's like this...
If it's like that, it's cute.
What kind of mouth does it have?
But what you can actually see from the outside is...
This is the front teeth of the upper teeth and this is the front teeth of the lower teeth, so you can only see it from the outside.
And for cat sharks...
They love mullets and sea urchins.
So, they eat them whole and use the back teeth that look like a cow's to eat up the inside.
That's why it's said that it evolved into teeth like these.
It looks like it's going to sting a lot.
Next up is "unknown life form".
Shark skin is said to be of the same material as that of sea creatures.
Now, can you guess what it is?
Thighs.
Buttons?
A skin of a bison.
A "bison" means "shark" in Japanese.
A shrimp is little bit harder because he is a sharker.
I'm sorry, I didn't do it on purpose.
Can you be motivated?
You said you will be motivated in the future.
But I didn't do it on purpose, so I can't use a sponge.
It's exactly the opposite.
Let's see. Here is the correct answer.
Teeth.
Again?
Two questions in a row. The correct answer is "teeth".
What does that mean? I've never heard of it.
Is it made of the same material as a shark's teeth?
Yes, it is.
Teeth are made of enamel enamel.
Shark's teeth are made of exactly the same material.
In the case of dream sharks,
shark's teeth are so sharp that you can cut your hand just by touching it.
It's dangerous.
Shark's teeth are made of exactly the same material.
I often see shark's teeth in sushi restaurants.
Really?
Yes.
Do you stick them on your teeth?
I didn't know that.
Don't say that!
I didn't know that.
Sharks have two reproductive organs.
What?
What does it mean?
Let's see the actual picture. Here it is.
This is a dream shark.
The top is female and the bottom is male.
It's more reproductive than I thought.
This arrow is called "crasper".
"Crasper"?
"Crasper", yes.
It's a professional term and it's called "crasper".
Are you interested in nails?
Is that what you think?
Yes, that's right.
What you want to see is the shark's teeth in the nails.
Shark's teeth?
Yes, that's what we want you to see.
The white part is shark's teeth?
The white part is shark's teeth.
Shark's teeth are called "crasper" and today it's "crasper".
Do you put shark's teeth in your nails every day?
Yes, I do.
Shark's teeth?
Do you like to put shark's teeth in your nails and look at them?
No, I like to see them integrated with me.
Shark's teeth are integrated with you?
Yes.
She's a pervert.
She's a shark pervert.
This is what a big shark looks like.
It's big, isn't it?
It has a reproductive organ.
Yes, this is a "crasper" which is about 12 meters long.
Is this you, teacher?
Yes, it's me.
What are you thinking about?
It's so big.
It's the biggest one.
Yes, it is.
It's really big.
It smells like poison.
Yes.
Sharks are fish.
However, they have a rare habit of mating.
I see. Normally, they don't do it.
But when they are born, they mate.
Yes.
There is a mystery why there are two of them even though one should be enough.
Is it still a mystery?
There are several theories.
One of them is because it's beneficial for survival.
There is another theory that even if you lose one of them, you can still have offspring.
I see.
There is one more theory.
This "crasper" is a "belly fin".
The "belly fin" is deformed and there is a hard object attached to it.
There is one "belly fin" and there are two of them.
There is also a theory that there are two of them because there are two of them.
However, when I see sharks in nature, I sometimes find one that doesn't exist.
I see.
I personally think that the first theory is beneficial for survival.
Is it because sharks mate with fish?
That's right.
Sharks mate with fish.
That's amazing!
I didn't know about it until now.
When they mate, it's really fierce.
Females swim in parallel with males.
Males usually bite their gills and pectoral fins.
What?
They bite them.
When females can't move, they bend "crasper" and put it in their mouth.
That's crazy!
Yes.
When females finish mating, their skin is really rotten.
If you look at it in the sea, it's so rotten that you think anyone would die.
But sharks are pretty strong, so it's been about a year or so.
It's been a long time.
It's been about a year and a half.
Yes, it's been about a year and a half.
It's been a long time.
Is it because they're running away?
That's right. When females don't like it and run away, males bully them.
They're bad guys.
But that may cause sexual hormones to come out.
You're a do-m.
Why are you on the woman's side?
When I heard that, I thought you were a do-s.
You're a do-m.
No, I'm a female shark.
I think female sharks may cause hormones to come out.
What about male sharks?
No, I think it's the one that was bitten.
See? She's a do-m.
Her eyes are weird.
She's a do-m.
Does it mean that females get excited when they're bitten?
There's a theory that it happens.
Does it happen to people?
No, it doesn't.
Even if it did happen, would you give it up?
No, I wouldn't.
Sharks have been confirmed to have 509 types so far.
From now on, we're going to learn about sharks that have slightly different characteristics.
First of all, this one.
Cat shark.
Cat shark?
Yes.
It looks really cute.
Is it cute?
Yes.
According to one theory, it has a cute expression like a cat, which is why it's called a cat shark.
It's a little different from the sharks we imagine.
It's different.
Here's a quiz.
This cat shark lays strange eggs.
Which of the following three is it?
Think about it.
First of all, I think it's A.
That's the shape of an egg.
It's quite different, isn't it?
Now, B.
Now, C.
It's just a shark.
Are there many Cs?
If it's a shark, it's like caviar, isn't it?
Oh, I see.
It's like a C.
I see. Let's see the correct answer.
The correct answer is this one.
It's A.
What?
These are eggs.
What?
Wow.
It's a rare shape.
Is it a dry sized can?
It's about the size of my palm.
Oh, it's big.
It's big.
It's cute.
Is there one egg in it?
Yes, there is one egg in it.
The females lay two eggs at a time.
In one season, they lay about 12 eggs.
Why is it shaped like this?
There's a story behind it.
Actually, it's shaped like a meccabu.
Cat sharks live in areas where you can often catch meccabu.
So, it's easy for mother sharks to lay eggs and hide them in an environment where they can find similar plants.
That's why it evolved like this.
That's amazing.
Wow.
As you saw earlier, "b" also changed its shape, but "b" is this shark called "nanukazame".
It's an egg.
Yes, this egg is also called "doll's wallet".
Often, when this was launched on a wave, the person who picked it up said, "Is this a doll's wallet?", and it became called like this.
This is also a characteristic of nanukazame's egg shell.
I see.
There is one.
Now, and "c". "c" is what I said earlier.
Caviar, yes.
This is "doll's wallet"'s egg, so it becomes caviar.
"doll's wallet" is actually not a shark's companion.
It becomes a completely different kind of fish.
"doll's wallet" has a name, but it has a completely different breath from a shark.
I thought it was a shark.
Perhaps it has a similar face and mouth at the bottom, and it may be a shark-like color.
Now, here is the next interesting shark.
Yes.
What is this?
"mitsukuri" shark.
What kind of shark is this shark?
This shark lives in the deep sea.
When you look at it like this, you may think it is an ordinary shark.
I think this area is a little long.
That's right.
However, it has a very interesting characteristic.
In English, it is called "goblin shark".
goblin shark
It's creepy.
Its skin is dirty.
It's a deep-sea shark, so when it comes up shallow, it slips a little.
So it's supposed to be a little cleaner.
It's scary.
Oh, it's touching it.
It's touching it.
Another one came out of it.
It has a characteristic of its jaw popping out of its mouth.
In the case of sharks, any shark can pop out of its mouth.
It's very rare for sharks to pop out of their mouths this much.
What's more amazing about this shark is that its jaw pops out of its mouth at a speed of 3.1 meters per second.
That's fast.
It's so fast that you can't even see it with your naked eye.
The next interesting shark is this one.
Red-fronted shark
Its Japanese name is "shimoku-zame", but its English name is "hammerhead shark" because of its big hammer- shaped head.
This strange-shaped head is very distinctive.
In fact, this shark's head has a sixth eye, which we humans don't have.
In professional terms, it's called "Lorenzini eye."
For example, we can't see it even if there were crabs in the sand, so we can't capture it.
But in this shark's case, we can feel and capture fine biological current coming out of this invisible place and eat it.
That's amazing. You can eat it even if you can't see it at all?
That's right.
So we enlarged the area of its head with sensors.
I think this is a good idea.
Among the 509 species of sharks, this shark is said to be one of the most evolved sharks.
The top of the shark world.
That's right.
The latest.
There are many interesting episodes about this shark.
At one aquarium, when they were only buying female sharks, they gave birth to children.
Only females?
Only females.
The people at the aquarium were surprised and looked up what was going on.
When they looked up its DNA, they found out that it was a clone of a mother shark.
Not only at the aquarium, but also with other sharks, you can make clones of sharks.
Isn't that amazing?
I didn't know that.
The children were born.
So there's no need for them to be one year old?
That's right.
If they were born and memorized...
However, if males and females don't have the same genes, they won't be diverse and will become weak animals.
So I think it's better to diversify the genes.
The next interesting shark is this one.
"Mammoth Shark".
What kind of shark is this?
This is another name. It's called "walking shark".
"Walking shark".
It means "to walk".
It's a shark, but it doesn't swim, but it evolves in a direction of walking.
I see.
It's very cute.
Please pay attention to this pectoral fin and pectoral fin.
This is where it swims a little now.
It's very cute.
It's a few species from southern Australia to Papua New Guinea.
It's really cute to walk on coral reefs.
Can you kill this with a pet or something?
Can you buy it?
You can buy it, so it's on sale.
It looks popular. It's cute.
However, only Australia and Papua New Guinea have it, so it's quite expensive.
How much is it for one?
I think it's about 200,000 japs.
I see.
Next is a shark named by its appearance.
This is a megamouse shark.
It has a big mouth, isn't it?
That's right.
It has a big mouth, so it's called a megamouse.
Megamouse.
This shark is very rare.
Until just 40 years ago, humans didn't recognize it.
It's amazing that no giant creatures are recognized on Earth today.
Now, it's confirmed that there are about 200 of them around the world.
The balance is strange.
But it's really like that.
What is it eating?
It's eating plankton like human beetles.
However, the way of eating is completely different.
In the case of human beetles, it's called "shrinkage".
Some of you may have seen them shrinking when they were feeding in the aquarium.
It is speculated that this part swells like a balloon and eats plankton and ochiami at once.
However, it is still too rare and has not been studied, so no one has seen them eating yet.
That's why it's shrouded in mystery.
Does it mean that the dead megamaus shark came up?
That's right. A living shark went into the net and died, so it was raised and used as a specimen.
For example, if you raise it while it's alive and do "shrinkage", will it become a great eye ball?
That's a world-class thing.
However, we don't know how to feed it yet.
Is it likely to die immediately?
That's right.
As long as it's not solved, it's difficult to feed it in the aquarium.
That's an interesting story.
This week, we will announce the candidate for "shrinkage" who was excellent and Kashiko was not good at all.
Next week, we will announce whether it's a reward or a punishment game.
Then, I will announce it.
Kashiko of this week is...
"flying fish"!
Yay!
The quiz "shrinkage" that swells like a balloon was correct.
And the candidate for "shrinkage" of this week is...
"chihi" and "coconut"!
Cheers!
"chihi" is a mysterious phrase that means "bones grow back", right?
And "coconut" is "too careless".
This time, they will play "can't be real, can't be fake", shark quiz battle!
Among these, five of them are real sharks, but only one of them is fake.
The person who guesses which one is fake will lose.
Rock-paper-scissors.
I'll go first.
OK, you go first.
OK.
This is hard.
OK, I'll go with "sawed shark".
"Sawed shark"!
"Sawed shark" is...
real!
OK, next is "coconut".
It's real.
"Ebisu shark".
"Ebisu shark" is...
real!
This is hard. It's already hard.
"Kabuto shark".
"Kabuto shark" is...
not real!
"Kabuto shark" is not real.
It's real, right?
It's real.
It's real, but it's not real.
So, "chihi" wins!
"Lemon shark" is real.
"Lemon shark" is...
not real!
Everyone loves "sushiro".
"Ebi avocado" and "tekeki uma"
Kyochon crab
"Kanizukushi"'s new products
and "sushi"'s special sweets
This is crazy.