David Attenborough: A Life on Our Planet · 2020 — Capítulo 8 de 10 · 3'32" · C1

The Ocean Starts to Die, Explained: reap the open ocean harvest

The narration recalls an ocean that looked untouched in the late 1990s, then explains how fishing fleets found the same nutrient hot spots as the fish. Nets once full of catch soon came back with nothing, and without large predators the nutrient cycle breaks. One line names the result: "The ocean starts to die."

Qué pasa

In the late 1990s a crew films a colorful ocean world undisturbed by any visitor, a world that had existed since the beginning of time. Most of the sea is empty except where currents raise nutrients and shoals gather. Fleets find those places, remove 90 percent of large fish, and within a few years the nets come in empty. Without predators, nutrients sink and the hot spots diminish.

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since the beginning of timeundisturbed by your presencehot spotsjust as good at

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Expresión de la escena

reap the open ocean harvest

taking the sea as if it were a crop

The clock jumps to the fifties and the fleets head offshore, while farm language makes that first wide catch sound like a harvest.

The company wanted to reap the open ocean harvest and still call the sea unlimited.

También en esta escena

  • since the beginning of time

    from the very start of time

  • undisturbed by your presence

    unchanged by your being there

  • hot spots

    rare zones where ocean life crowds

  • just as good at

    equally good at something

  • coming in empty

    returning with nothing inside

Todo lo marcado en esta escena

27 notas en 23 frases

Expresión · B1the subject of something

the thing a work is about

This habitat was the subject of the series The Blue Planet, which we were filming in the late '90s.
Expresión · B2since the beginning of time

from the very start of time

The habitat filmed for The Blue Planet in the late nineties is described as a world that had existed since the beginning of time.

It was... an astonishing vision of a completely unknown world, a world that had existed since the beginning of time.
Sonidoan astonishing

Join the n in an to the next vowel without a gap.

It was... an astonishing vision of a completely unknown world, a world that had existed since the beginning of time.
Expresión · A2have no idea

did not know at all

All sorts of things that you had no idea had ever existed,
Gramática · C1that you had no idea had ever existed

nested relative: that links to things; you had no idea is the verb, and had ever existed is the content you never knew.

All sorts of things that you had no idea had ever existed,
Expresión · B2a multitude of something

a huge number of

all in a multitude of colors, all unbelievably beautiful.
Expresión · B2undisturbed by something

unchanged by your being there

Right after the colors are called unbelievably beautiful, the creatures are described as completely undisturbed by your presence.

And all of them completely undisturbed by your presence.
Expresión · B2for much of something

across most of its area

For much of its expanse, the ocean is largely empty.
Expresión · B2hot spots

rare zones where ocean life crowds

Right after the ocean is called mostly empty, someone names a few hot spots, like dots on a blank map where life still crowds.

But in certain places, there are hot spots
Sonidoare hot spots

Stress hot and let spots fall off.

But in certain places, there are hot spots
Expresión · C1trigger an explosion of something

set off a sudden surge of life not a blast; life suddenly surging

where currents bring nutrients to the surface and trigger an explosion of life.
Expresión · B2shoals of something

dense crowds of fish

In such places, huge shoals of fish gather.
Expresión · B1just as good at something

equally good at something

The rich patches have just been praised, and the next sentence matches the fleets to the fish so that the skill itself becomes the disaster.

The problem is that our fishing fleets are just as good at finding those hot spots as are the fish.
Gramática · C1as are the fish

comparative inversion: The verb moves before the fish, and the fish stay the standard being matched.

The problem is that our fishing fleets are just as good at finding those hot spots as are the fish.
Sonidoas are the

Say as are the lightly and save the weight for fish.

The problem is that our fishing fleets are just as good at finding those hot spots as are the fish.
Expresión · B1with ease

without real difficulty

When they do, they're able to gather the concentrated shoals with ease.
Expresión · B2venture out into somewhere

set out into a farther place

It was only in the '50s that large fleets first ventured out into international waters...
Expresión · B2international waters

high seas beyond territorial waters

It was only in the '50s that large fleets first ventured out into international waters...
Gramática · B2It was only in the '50s that

cleft sentence: The cleft lifts the decade out so the late start is the whole point.

It was only in the '50s that large fleets first ventured out into international waters...
Expresión · C1reap the harvest

taking the sea as if it were a crop

The clock jumps to the fifties and the fleets head offshore, while farm language makes that first wide catch sound like a harvest.

to reap the open ocean harvest across the globe.
Expresión · B2come in empty

returning with nothing inside

Plenty has just been mentioned, and within a few years the same gear is described as coming back with nothing.

But within only a few years, the nets across the globe were coming in empty.
Expresión · C1subsidize someone to maintain something

pay fleets so the industry survives

The fishing quickly became so poor that countries began to subsidize the fleets to maintain the industry.
Expresión · C1nutrient cycle

nutrients circling back into use

Without large fish and other marine predators, the oceanic nutrient cycle stutters.
Expresión · B2sunlit waters

the sea layer daylight reaches

The predators help to keep nutrients in the ocean's sunlit waters,
Expresión · A2again and again

over and over

recycling them so that they can be used again and again by plankton.
Expresión · C1lost to somewhere

sunk deep and gone for ages

Predators have just been credited with holding nutrients up, and the next line sends those nutrients into the deep for centuries.

Without predators, nutrients are lost for centuries to the depths
Sonidostarts to die

Don't give starts and to two separate beats.

The ocean starts to die.

The Ocean Starts to Die, explicado

What's really going on

The wonder comes first. A habitat filmed for The Blue Planet appears as "an astonishing vision of a completely unknown world," full of creatures in every color, "completely undisturbed by your presence." For much of its expanse the ocean is empty, and life crowds into hot spots where currents lift nutrients. The trouble is practical, not mysterious: fishing fleets are "just as good at finding those hot spots as are the fish," and once there they gather whole shoals with ease. Large fleets only pushed into international waters in the 1950s, yet "they've removed 90% of the large fish in the sea." Nets that came up full at first were, within a few years, coming in empty, and countries paid subsidies just to keep the industry going. Predators hold nutrients in sunlit water so plankton can use them again and again. Without those predators, nutrients drop "for centuries to the depths," the hot spots shrink, and one line states the end: "The ocean starts to die."

Theme

Death & griefA world that had existed since the beginning of time is reduced to empty nets and the plain statement that the ocean starts to die.
SurvivalLarge fish keep nutrients in sunlit water. Once fleets remove them, the cycle stutters, hot spots shrink, and life has less to live on.

Escucha con atención

  • an astonishing — Join the n in an to the next vowel without a gap.
  • are hot spots — Stress hot and let spots fall off.
  • as are the — Say as are the lightly and save the weight for fish.
  • starts to die — Don't give starts and to two separate beats.
It was... an astonishing vision of a completely unknown world, a world that had existed since the beginning of time.

The late-1990s footage showed a hidden ocean world that seemed to have been there since the beginning of time.

And all of them completely undisturbed by your presence.

The creatures stay beautiful and calm even though someone is right there among them.

The problem is that our fishing fleets are just as good at finding those hot spots as are the fish.

Fleets can find the crowded feeding places as well as the fish can, so the shoals are easy to take.

Yet, they've removed 90% of the large fish in the sea.

The fleets that sailed out to harvest the open ocean have taken ninety percent of the sea's large fish.

Without large fish and other marine predators, the oceanic nutrient cycle stutters.

Once the big hunters are gone, the loop that keeps nutrients moving in the sunlit water starts to break.

The ocean starts to die.

It is the result the narration names once nutrients sink and the crowded places begin to fade.

Preguntas sobre esta escena

Why do the nets start coming in empty?

The fleets found the hot spots and removed 90% of the large fish. At first the nets caught plenty, but within a few years they came in empty, and fishing became so poor that countries subsidized the fleets.

What are the hot spots in this scene?

Places where currents bring nutrients to the surface and trigger an explosion of life, so huge shoals of fish gather. Most of the ocean is otherwise largely empty.

Why does removing large fish make the ocean start to die?

Large fish and other predators keep nutrients in the sunlit waters and recycle them for plankton. Without them, nutrients are lost for centuries to the depths, the hot spots diminish, and the ocean starts to die.

Why could the fleets take the shoals so easily?

They are just as good at finding the hot spots as the fish are. Once they locate those crowded places, they gather the concentrated shoals with ease. Large fleets first went into international waters in the 1950s to reap that harvest.

David Attenborough: Una vida en nuestro planeta · 10 capítulos

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