Pratica di Shadowing: Why Do Deep Oceans Have So Many Giants? - Impara a parlare inglese con i video
Creazione lezione...
1
Let's imagine you're trapped in a glass box sinking down to the bottom of the ocean.
2
You might think all you'd see a tiny fish, or at worst, something like an anglerfish.
3
But what you'd actually find is much, much bigger.
4
Sharks become bigger than great whites, squids are now heavier than cars, and even the once ordinary looking insects are now just extraordinarily gigantic.
5
Welcome to the messed up world of deep sea gigantism, exists in the bottom of the ocean.
6
But while you'd expect in a place with zero sunlight and almost no food that animals would shrink down to save energy, instead, the ocean does the exact opposite.
7
Everything in deep water turns into some oversized version of themselves, turning the small creatures big and the big creatures giant.
8
So what's actually in the water that's causing these creatures to turn into monsters?
9
I'm sorry.
10
Well, to understand why deep sea gigantism exists, let's take a look at what's probably the most terrifying example of it: the big fin squid.
11
And if you couldn't tell, this squid has very oddly big fins.
12
Relative to their mantle size, their fins are stretched out way longer than normal, and can even make the body wider than it is tall, something you don't really see in any other squid.
13
But most of their actual size isn't even their body, it's these elbows.
14
limbs that look like bent arms, but they're permanently bent into place.
15
Compare these to the tentacles of a normal shallow water squid, and you'll pretty easily see something's happened to morph these guys into something different.
16
So, what was it in the deep ocean that forced them to evolve into these massive, spindly giants?
17
Well, 15 ,000 feet down, you can't exactly go around sprinting after prey.
18
There's almost no food, and every movement costs precious energy.
19
Instead of hunting, it just drifts, letting those 20 -foot -long filaments hang in the dark like a massive net.
20
It covers as much area as possible while doing almost zero work.
21
In reality, while they're unsettling and I would definitely never want one to touch me, most of their size is dangly arms that would never actually be able to hurt you.
22
There's barely any muscle in those arms, and we have no real evidence that these squids are dangerous towards humans. Yet.
23
Almost every big fin we've ever caught has actually just been a juvenile.
24
are already stretching out to 20 feet, we have no idea how much larger the full -grown adults might get.
25
They're relatively hard to study because they live thousands of meters below the surface, and most that we've found have actually just been by accident.
26
They're big, but the ocean is even bigger, so they're incredibly rare.
27
But wait, if the only reason to get big in the deep was to turn yourself into a giant fishing net, then every animal down there would just look like a bunch of floating string.
28
But they don't.
29
Gigantism isn't just one hack for finding food.
30
It's a response to a much bigger problem.
31
Survival in a place that is actively trying to starve you to death.
32
Some animals didn't just grow long arms, they grow an entirely massive frame.
33
Take a look at this.
34
This isn't a squid or a worm.
35
This is the oarfish.
36
bony fish in the entire ocean
37
and it's one of the most blatant examples of gigantism that has absolutely nothing to do with nets.
38
A full -grown oarfish can stretch out to over 36 feet long, which, to put that in perspective, is longer than three cars parked bumper to bumper, made entirely of fish.
39
For centuries, sailors who caught a glimpse of these things at the surface thought they were literal sea serpents and honestly, looking at them, I don't really blame them.
40
They have these and a body that's really, really long.
41
They aren't just stringy either.
42
These creatures genuinely weigh over 600 pounds.
43
But what was it about their environment that forced them to stretch out and become this big, instead of, well, this big, like any other normal bony fish?
44
They aren't using their body to snag prey like the bigfin squid does.
45
Instead, they use their massive size to become a giant antenna.
46
Awefish have been observed hanging By being 30 feet long and vertical,
47
they can scan different layers of the ocean at the exact same time.
48
Think about it.
49
At the bottom of the ocean, food doesn't move horizontally.
50
It falls from above.
51
By being incredibly long, the oarfish can detect pressure changes
52
or chemical signals from prey that might have been 10 feet above its head
53
or 10 feet below its tail without moving a single muscle.
54
They're a living biological sensor that covers as much vertical ground as possible.
55
But if being a giant antenna or living net is so great, why aren't all the ocean? all fish at the surface also doing it?
56
Well, it's because the deep sea removed the one thing that keeps most animals small: competition.
57
On a coral reef, you're a slow, 30 -foot -long ribbon of meat.
58
A shark or an orca is going to have the easiest lunch of its life.
59
On the surface, being big and slow is a death sentence because there is always something faster and hungrier than you.
60
You're forced to stay small just so you can hide or stay fast just so you can escape.
61
But in the deep, who are you running from?
62
The abyss is remarkable.
63
There aren't massive schools of predators patrolling the darkness.
64
For an awl fish or a bigfin squid, there is almost zero evolutionary pressure to be fast.
65
Once you reach a certain size, you are effectively too big for the few predators down there to even bother with.
66
Without anyone to hunt them, these animals were free to stop wasting energy on speed and start focusing entirely on efficiency.
67
And that's the real secret to deep sea gigantism.
68
Larger bodies are actually just better at not dying of hunger.
69
It sounds counterintuitive, but it's not just a big thing but a larger body allows for a much slower metabolism.
70
It's a biological paradox.
71
Being bigger actually costs less energy per pound of animal.
72
A tiny fish has a high metabolism and can starve to death in days if it doesn't find a meal.
73
But these giants are built like massive biological batteries.
74
They can store massive amounts of nutrients and then just wait.
75
Their hearts beat slower, their muscles move less, and they can go months between meals because their bodies are designed to endure, not to sprint.
76
Yes, but gentle giants.
77
Well, not always.
78
This is the giant squid, and unlike the oarfish or the bigfin, there is absolutely nothing gentle about this giant.
79
These creatures can stretch up to 45 feet long and weigh nearly half a ton, and they don't just feed on plankton or tiny shrimp.
80
It has the largest eyes in the entire animal kingdom, literally the size of dinner plates designed to catch the tiniest glimmers of light in the pitch black.
81
the giant squid had to weaponize its entire body.
82
It uses two massive feeding tentacles, like biological grappling hooks, to snatch fish out of the dock.
83
Each sucker on the tentacle is lined with a ring of sharp, serrated teeth made of chitin, designed to dig into flesh so the prey can't slip away.
84
Once it has a grip, it drags the victim towards its center, where it eats them with a beak harder than bone that could chomp a turtle in half.
85
These creatures are not gentle.
86
giants instead of just passive drifter giants.
87
Well, while the abyss is mostly empty, it's not entirely empty.
88
And if you're going to hunt things that can actually fight back, you can't afford to be a living net.
89
You have to be a weapon.
90
But the biggest reason they had to get so massive wasn't just to catch food.
91
It's because they're one of the only deep sea creatures that actually has a rival.
92
Sperm whales.
93
Whales will dive thousands of feet into the darkness specifically to find and eat these squids.
94
They created a literal biological arms race that has been going on for millions of years.
95
To survive, the squids were forced to grow larger to fight back, developing thicker mantles and more powerful beaks to try and fend off a multi -ton mammal.
96
When we find sperm whales with massive circular scars all over their faces, those aren't accidents.
97
Those are the marks of a battle that happened in total darkness, miles below the surface.
98
It's a completely different side of deep -sea gigantism.
99
Instead of with a surface animal that's been terrorizing them for millenniums.
100
But if the deep sea is a place of crushing, bone breaking pressure, wouldn't being a giant be the worst possible move?
101
You'd think a massive body would just be squeezed instantly and pop under all the stress.
102
But that's actually one of the biggest misconceptions about the deep ocean.
103
Pressure doesn't crush you if you're made of the same stuff as the water around you.
104
These animals are mostly water and oil, and since liquids don't compress, the pressure inside their cells is the same as pressure outside.
105
They're essentially a part of the deep ocean part of the ocean instead of resisting it.
106
In fact, the deep sea is actually the easiest place on Earth to be a giant.
107
See, on land, your biggest enemy isn't pressure, it's gravity.
108
Gravity is a constant tax on your skeleton.
109
The bigger you get, the more energy you have to waste just standing up.
110
If an earthworm tried to grow to 40 feet long, it would literally be crushed by its own weight before it could even move.
111
But in the water, buoyancy deletes that tax.
112
Because the water supports their mass, these animals have total structural freedom.
113
This is why soft -bodied giants are so common down there.
114
But you don't see many rigid skeleton ones.
115
They don't need heavy bones to stay upright.
116
They can grow massive, grotesquely large frames that would be physically impossible on land, using almost zero energy to maintain them.
117
But this doesn't mean it's completely impossible for hard -shelled animals to experience deep -sea gigantism.
118
Look at the giant isopod.
119
If you've ever flipped over a log and seen a pill bug or a roly -poly, you're looking at a distant cousin of this thing.
120
And while giant isopods can't grow to the size of actual giants like the giant squids, compared to the insects on land, they're absolutely massive.
121
In fact, if you look at the scale of gigantism, the isopod might actually be the most extreme case on the list.
122
A normal squid is maybe a foot or two long and weighs a couple of pounds.
123
A giant squid is 45 feet long and weighs 700 pounds.
124
weighs almost nothing, maybe a tenth of a gram.
125
A giant isopod can weigh nearly 4 pounds, that's a 20 ,000 times increase in mass.
126
Proportionally, that is like a house cat evolving into a creature the size of a blue whale.
127
Japanese spider crabs as well can grow bigger than the length of two of you combined, assuming you're not 7 feet tall.
128
And they have hard shells as well.
129
And for anyone who saw our video on crab evolution, these guys are actually still true crabs, Here's the weird part.
130
Unlike a giant squid, which would collapse instantly at the surface, giant isopods and Japanese spider crabs can actually survive the pressure up here just fine.
131
You can just stick them in a tank and they'll be okay.
132
So, if they can live up here, why did they only become giants in the deep?
133
Well, again, there's so many other factors to deep sea gigantism besides just pressure.
134
You need specific conditions to allow yourself to become gigantic.
135
In the abyss, you can go years with a giant giant without seeing a single scrap of food.
136
But when something like a dead whale sinks to the bottom, you need to munch and store up for the next decade.
137
To survive, the isopod had to evolve to become the ultimate biological storage container.
138
By being massive, they can fit a staggering amount of food into their bodies at once.
139
They can gorge themselves until they're physically distorted, eating enough in one sitting to stay alive for years.
140
There are actually records of these guys in captivity going five entire years without a single meal.
141
like their garden cousins, they'd never be able to store enough energy to survive the wait between meals.
142
Because they could be waiting until they die.
143
It's odd, but the less food there is, the bigger the animals will get.
144
And because the water is so cold, the metabolism of these animals is dialed down to almost zero.
145
They aren't burning energy just to exist, which means their cells aren't wearing out like ours do.
146
And when you aren't burning through your own body just to stay alive, you end up living for a long, long time.
147
overlooked parts of deep sea gigantism: time.
148
A normal pill bug in your yard might live for two or three years before it hits its limit.
149
But a giant isopod can live for decades, which just gives it more time to grow.
150
You're not necessarily a giant because of a single mutation, you're a giant because you've had centuries to just...
151
keep growing.
152
Size is basically a side effect of not dying, and nowhere is this time factor more obvious than in this guy, the Greenland shark.
153
But the great white is the king of sharks, and while they're definitely faster and more aggressive, the Greenland shark will eventually dwarf them.
154
It just takes a while.
155
They can reach lengths of over 24 feet, making them one of the largest sharks in the entire world.
156
But they aren't big because they're strong or active predators.
157
They're big because they're practically immortal.
158
These sharks grow at a rate of only about 1 .5 centimeters per year.
159
Think about how slow that is.
160
For a Greenland shark to reach 20 feet long, it has to be alive for centuries.
161
Scientists have found individuals that are estimated to be around 400 years old,
162
which means there are sharks swimming in the deep today that were born before the industrial revolution even started.
163
They don't even reach sexual maturity, meaning they aren't even adults until they're about 150 years old.
164
They still grow a bit even past that stage, and while 1 .5 centimeters a year doesn't sound like much, stack that up over 300 years, that's already 15 feet.
165
However, despite how cool deep sea gigantism is, I would like to clarify
166
that the deep isn't actually just a straight chaotic zone where every single thing is now a thousand times the size.
167
A lot of people will play up this effect to make it sound like there's things larger than whales
168
or that absolutely everything gets huge.
169
But the real truth is that deep sea gigantism doesn't apply to everything in the deep.
170
In fact, most things in the deep are still actually pretty small.
171
Gigantism only rewards a select few builds
172
that only will be able to get the deep work if your biology can handle the trade -offs.
173
You don't just instantly become big by going deep, you're forced to become big when your build wouldn't work otherwise.
174
The giant build only really makes sense for a few specific types of animals: the scavengers who need to store food, the ambush predators who don't want to move,
175
and the biological batteries who have zero competition.
176
If you don't fit into one of these categories,
177
staying small is actually the more aggressive reproduce faster,
178
and live off the tiny crumbs that the giants miss.
179
We see this in highly specialized niches, like certain deep -sea snails and crustaceans that have stayed microscopic for millions of years.
180
They've been stripped down to the bare minimum, just enough muscle to move, and just enough brain to find a mate.
181
They aren't failed giants.
182
They are the ultimate survivors of the leanest environment on Earth.
183
Even some fish have taken this to the extreme.
184
Think about the The males of some species have undergone such intense miniaturization that they've lost the ability to even feed themselves.
185
They've shrunk down until they're essentially just a tiny, swimming set of nostrils and fins, designed to find a female,
186
attach to her, and stay small enough that they don't drain her energy.
187
And in some places in the even deeper sea, in what scientists call biological deserts,
188
the food supply is so incredibly low that the math for a giant body just doesn't add up.
189
fish still needs a baseline amount of calories just to keep its heart beating and its cells alive.
190
If there's genuinely only grams of food available, no matter how good your metabolism is, you can't survive.
191
With all these factors together, deep sea gigantism isn't really a freak accident, but just an inevitability for creatures down there.
192
You have buoyancy removing the weight of your own body, so you don't need to waste energy building a heavy skeleton.
193
You have the cold or even centuries without wearing out.
194
And because there are so few predators, there's nothing to stop you from reaching that endgame size.
195
There is actually a big misconception that oxygen is what drives this, because it is true that higher oxygen will also cause animals to get bigger.
196
Cells need oxygen, and if they can't get enough, then giant bodies will suffocate.
197
But the deep sea isn't actually that oxygen rich.
198
If you saw our video on the polar giants, gave birth to things like the colossal squid, which are even heavier than giant squids.
199
It's suspected that they became even larger due to a combined effect of both polar and deep sea gigantism, which is how they're so ridiculously chunky.
200
And while we think these giant creatures are freaks because they don't look like the fish we see at the beach, the truth is, the oceans at the surface are the weird and chaotic ones.
201
There's way more violence, way more animals eating each other and injecting each other freaks of nature, just a different kind.
202
Squids in the deep probably see squids at the surface and wonder, how did they get so freakishly tiny?
203
Fortunately, if you're afraid of these giants, they won't be reaching you anytime soon because of how helpless they've become at the surface.
204
They are perfectly designed for their world, and we are perfectly designed for ours.
205
And by ours, I mean the local beach.
206
I'm not going in any further past that.
207
Thank you guys for watching and if you enjoyed this video, consider checking out our others, as well as our second channel which I'll link in the description.
📺 Stesso Canale
B21
Nothing About Colossal Squids Is Normal... Here's Why
Daily ConversationUniversity Students
B21
Why The Entire Ocean Is Terrified of Sperm Whales
University StudentsWorking Adults
B22
Nothing About The Mariana Trench Is Normal... Here's Why
IELTS PrepUniversity Students
B2The Creepiest Fish Found at the Bottom of Our Oceans
Daily ConversationUniversity Students
✨ Video consigliato
B22
254 frasi
The New Hunt for the Colossal Squid
American AccentIELTS PrepTOEFL PrepUniversity Students
C14
104 frasi
How real are the real numbers, really?
IELTS PrepTOEFL PrepUniversity Students
B22
43 frasi
IELTS listening practice Part 4 - Leatherback turtle (answer & transcript)
IELTS PrepTOEFL PrepUniversity Students
C19
48 frasi
Why Don't Blue Whales Eat Fish?
IELTS PrepTOEFL PrepUniversity Students
B23
155 frasi
Why Ancient Humans Were The Most TERRIFYING Animal Alive
IELTS PrepTOEFL PrepUniversity Students
C13
37 frasi
The Megatsunami That Struck the Entire Planet
IELTS PrepTOEFL PrepUniversity Students
B242
18 frasi
Why are coral reefs so important?
IELTS PrepTOEFL PrepUniversity Students
B22
38 frasi
Great White Shark (Carcharodon carcharias)
IELTS PrepTOEFL PrepUniversity Students
C14
204 frasi
The Insane Biology of: The Octopus
IELTS PrepTOEFL PrepUniversity Students
B21
211 frasi
The Biggest Problem No One Is Talking About
IELTS PrepTOEFL PrepUniversity Students
C195 frasi
Paleoworld- Loch Ness Secrets (Part 1)
IELTS PrepTOEFL PrepUniversity Students
B24
200 frasi
Why Are 96,000,000 Black Balls on This Reservoir?
IELTS PrepTOEFL PrepUniversity Students
Contesto e Background
Nel video "Perché gli oceani profondi hanno così tanti giganti?", il relatore esplora il fenomeno del gigantismo degli organismi marini nelle profondità oceaniche. A dispetto delle condizioni estreme come l'assenza di luce e la scarsità di cibo, molte creature degli abissi si sviluppano in forme giganti. Questo discorso invita gli ascoltatori a riflettere sulle straordinarie strategie di sopravvivenza di queste specie, rivelando un mondo marino affascinante e pericoloso. L'approccio del relatore è informale e coinvolgente, il che rende il contenuto accessibile e interessante per chiunque voglia imparare l'inglese con YouTube e migliorare la propria pratica di conversazione in inglese.
Le 5 Frasi Chiave per la Comunicazione Quotidiana
- "Most of their actual size isn't even their body, it's these elbows." - La dimensione degli organismi acquatici è influenzata da diversi fattori.
- "Instead of hunting, it just drifts." - Strategie adattative per la sopravvivenza negli abissi.
- "Gigantism isn't just one hack for finding food." - Il gigantismo come risposta a sfide ambientali.
- "A full-grown oarfish can stretch out to over 36 feet long." - Dimensioni sorprendenti delle creature degli oceani profondi.
- "They can scan different layers of the ocean at the exact same time." - Abilità uniche degli organismi marini per cercare cibo.
Guida Passo-Passo al Shadowing
Per affrontare le difficoltà di questo video e migliorare le tue abilità linguistiche attraverso la pratica di shadow speak, segui questi semplici passaggi:
- Ascolta attentamente: Guarda il video più volte mantenendo la concentrazione sulle parole e sulle frasi pronunciate dal relatore.
- Ripeti ad alta voce: Dopo ogni frase chiave, fermati e ripeti quanto ascoltato. Questo ti aiuterà a migliorare la tua pronuncia e la tua fluidità.
- Annota le frasi: Prendi appunti sulle frasi chiave per facilitarne la memorizzazione e l'uso futuro nelle conversazioni.
- Impara il significato: Se incontri parole o frasi che non comprendi, cerca il loro significato e prova a usarle in contesti diversi.
- Pratica regolarmente: Dedica un po’ di tempo ogni giorno alla pratica, utilizzando il video come strumento di riferimento. Farlo ti permetterà di affinare ulteriormente le tue competenze linguistiche attraverso il shadowspeak.
Utilizzando queste tecniche nel tuo shadowing site preferito, potrai migliorare notevolmente la tua capacità di parlare in inglese, rendendo l'apprendimento un'esperienza più interattiva e stimolante.
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | we've ever caught · we've found · have been observed |
| Forma passiva be + participio passato — conta ciò che accade, non chi lo fa | are stretched · have been observed · are built |
| Frasi relative who / which + frase — un’informazione in più su una persona o una cosa | anyone who saw · exist, which means · squid, which are |
Cos'è la tecnica dello Shadowing?
Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.