David Attenborough: A Life on Our Planet · 2020 — 第 9 / 10 章 · 2'52" · C1

Coral Reefs Turn White, Explained:stumbled on

The shallows look beautiful because the coral has turned white. That color is the reef dying: corals expel the algae living inside them, and what remains are skeletons, later smothered by seaweed. "And the reef turns from wonderland... to wasteland." The bleaching was a mystery until it lined up with warming seas, and with carbon released by burning fossil fuels.

あらすじ

In the shallows, ocean life is coming apart. A Blue Planet film crew stumbles on coral reefs turning white, a sight little known in 1998. The color comes from corals expelling the algae that live inside them. Beauty flips: the white is skeletons of dead creatures, and seaweed smothers the reef until wonderland becomes wasteland. Warming seas explain the bleaching, and the ocean has been absorbing the excess heat.

MonologuesStorytellingExplainingWarningC1slowbritishClean
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注目の表現

stumbled onsymbioticallyyou think perhaps that it's beautiful, and suddenly you realize it's tragicsmothered by

00:00 / 02:52
Space 再生 · ← → セリフ移動 · R リピート
いま
  1. ❝ 独白From beauty to ruin5 行練習ページ ↗
セリフをタップするとそこから再生

このシーンの表現

stumbled on

found by chance, not by search

The narration frames the white reefs as an accident the crew met while filming, not a planned find.

I stumbled on a tiny bookstore while wandering.

このシーンの他の表現

  • symbiotically

    living as partners inside each other

  • you think perhaps that it's beautiful, and suddenly you realize it's tragic

    a beautiful first look cancelled a moment later

  • smothered by

    covered until life is squeezed out

  • wonderland... to wasteland

    the same reef changing from a fairy-tale place into a ruin

  • incompatible with

    cannot be true at the same time

このシーンのメモ一覧

22 行のセリフに 29 件のメモ

表現 · B2unravelling in somewhere

coming apart in shallow water

Ocean life was also unravelling in the shallows.
表現 · B2stumble on something

found by chance, not by search

The narration frames the white reefs as an accident the crew met while filming, not a planned find.

In 1998, a Blue Planet film crew stumbled on an event little known at the time.
発音stumbled on an

Run stumbled on an together so n meets the next vowel.

In 1998, a Blue Planet film crew stumbled on an event little known at the time.
表現 · A2turning + color

becoming white as you watch

Coral reefs were turning white.
表現 · C1expel something

forcing the algae out

The white color is caused by corals expelling algae that lives symbiotically within their body.
表現 · C1live symbiotically

lives inside as a partner

The white color is caused by corals expelling algae that lives symbiotically within their body.
文法 · B2that lives symbiotically within their body

relative clause: The that-clause puts the algae inside the coral, not beside it.

The white color is caused by corals expelling algae that lives symbiotically within their body.
表現 · B1what you're looking at

the thing actually in view

Because what you're looking at is skeletons.
文法 · B2what you're looking at

nominal clause: The words before is are one subject: the view itself.

Because what you're looking at is skeletons.
発音what you're looking

Give you're no full beat between what and looking.

Because what you're looking at is skeletons.
表現 · B2smothered by something

choked under a cover of seaweed

The white corals are ultimately smothered by seaweed.
表現 · B2from something to something

from a magical place to a ruin not two places; one reef, alive then dead

And the reef turns from wonderland... to wasteland.
発音And the reef

Shrink And to a light sound and attach it to the.

And the reef turns from wonderland... to wasteland.
表現 · B2the cause of something

what made the coral turn white

At first, the cause of the bleaching was a mystery.
表現 · B2in many cases where

in a lot of the instances where

But scientists started to discover that in many cases where bleaching occurred, the ocean was warming.
表現 · B2fossil fuels

coal and oil from ancient life

For some time, climate scientists had warned that the planet would get warmer as we burned fossil fuels
文法 · B2as we burned fossil fuels

as-clause: As means while and because: burning is why it warms.

For some time, climate scientists had warned that the planet would get warmer as we burned fossil fuels
表現 · B2greenhouse gases

gases that keep heat in the air

and released carbon dioxide and other greenhouse gasses into the atmosphere.
表現 · C1incompatible with something

cannot be true at the same time

Before the extinctions are counted, carbon change and a stable earth are declared unable to coexist.

A marked change in atmospheric carbon has always been incompatible with a stable earth.
表現 · C1mass extinction

die-offs on a planetary scale

It was a feature of all five mass extinctions.
表現 · C1trigger a catastrophe

set off a full-scale disaster

it had taken volcanic activity up to one million years to dredge up enough carbon from within the earth to trigger a catastrophe.
文法 · C1it had taken volcanic activity

dummy subject: It is a placeholder; the real task is dredging up the carbon.

it had taken volcanic activity up to one million years to dredge up enough carbon from within the earth to trigger a catastrophe.
表現 · C1years' worth of something

an amount that took years to store

By burning millions of years' worth of living organisms all at once as coal and oil,
表現 · B1all at once

in a single go, not gradually

By burning millions of years' worth of living organisms all at once as coal and oil,
表現 · B2manage to do something

succeeded in doing that do so means releasing enough carbon to cause disaster

we had managed to do so in less than 200.
表現 · B2relatively stable

relatively stable, not absolutely unchanging

The global air temperature had been relatively stable till the '90s.
表現 · C1mask someone's impact

hiding the effect we were having

But it now appeared this was only because the ocean was absorbing much of the excess heat, masking our impact.
文法 · C1masking our impact

result participle: Masking adds the result: the ocean hides our effect by taking the heat.

But it now appeared this was only because the ocean was absorbing much of the excess heat, masking our impact.
発音lose its balance

Put the weight on balance and do not stress its.

It was the first indication to me that the earth was beginning to lose its balance.

「Coral Reefs Turn White」を読み解く

What's really going on

The white is doing two jobs. It looks like a spectacle, and it is a death. "Because what you're looking at is skeletons." Seaweed finishes the work. "And the reef turns from wonderland... to wasteland." The harder turn is the cause. Bleaching was a mystery, then it kept showing up where the ocean was warming. Climate scientists had already warned that burning fossil fuels and releasing carbon dioxide would heat the planet. A marked change in atmospheric carbon "has always been incompatible with a stable earth," and it was a feature of all five mass extinctions. Volcanoes needed up to a million years to dredge up enough carbon. Burning coal and oil did it in less than two hundred. Air temperatures looked steady into the 1990s only because the ocean was absorbing the excess heat and masking the impact. The white reef is the first indication that the earth was beginning to lose its balance.

Theme

Death & griefThe white coral is beautiful only until it is revealed as skeletons, and the reef turns from wonderland to wasteland.
SurvivalA carbon change linked to all five mass extinctions is underway, and the reef's living cover is already dying into skeletons.

発音のポイント

  • stumbled on an — Run stumbled on an together so n meets the next vowel.
  • what you're looking — Give you're no full beat between what and looking.
  • And the reef — Shrink And to a light sound and attach it to the.
  • lose its balance — Put the weight on balance and do not stress its.
When you first see it, you think perhaps that it's beautiful, and suddenly you realize it's tragic.

The white reef can look lovely at first glance. The same sight is then understood as a catastrophe, not a wonder.

Because what you're looking at is skeletons.

The white is not a living surface. It is the bare remains of creatures that have already died.

And the reef turns from wonderland... to wasteland.

After the corals whiten and seaweed smothers them, the reef is no longer a living marvel. It is a barren place.

A marked change in atmospheric carbon has always been incompatible with a stable earth.

A sharp change in atmospheric carbon cannot coexist with a stable earth. The line treats that clash as a standing fact.

It was a feature of all five mass extinctions.

That marked change in atmospheric carbon showed up in every one of the five mass extinctions.

It was the first indication to me that the earth was beginning to lose its balance.

For the speaker, this is the first sign that the earth is starting to lose its balance, after the ocean had been masking the heat.

このシーンについての質問

Why do the coral reefs turn white?

The white color is caused by corals expelling algae that lives symbiotically within their body. The algae had been living inside the coral, and once it is expelled the reefs turn white. That is the reason given for the white itself.

Why did scientists connect the bleaching with warming seas?

At first, the cause of the bleaching was a mystery. Scientists then found that in many cases where bleaching occurred, the ocean was warming. Climate scientists had warned that the planet would get warmer as we burned fossil fuels and released carbon dioxide and other greenhouse gasses into the atmosphere.

Why did global air temperature look stable until the 1990s?

The global air temperature had been relatively stable till the '90s only because the ocean was absorbing much of the excess heat, masking our impact.

How does burning coal and oil compare with volcanoes here?

Volcanic activity took up to one million years to dredge up enough carbon from within the earth to trigger a catastrophe. Burning millions of years' worth of organisms all at once as coal and oil did that in less than 200 years.

デヴィッド・アッテンボロー: 地球に暮らす生命 · 全 10 章

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