Name: 【TED】Barbara Block: Tagging tuna in the deep ocean (Barbara Block: Tagging tuna in the deep ocean)
Uploaded: 2017-09-15T02:36:02.000Z
Duration: 20 min 37 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

the second-largest fish in the sea -- bony fish.

powers through the ocean with warm muscles like a mammal.

That's one of our bluefin at the Monterey Bay Aquarium.

You can see in its shape and its streamlined design

It flies through the ocean on its pectoral fins, gets lift,

It's actually got a naked skin for most of its body,

This is what one of nature's finest machines.

For 4,000 years, we fished sustainably for this animal,

And yet, the type of fishing going on today,

of having contributed to the demise of bluefin.

And that's their problem; we're eating them to death.

Now in the Atlantic, the story is pretty simple.

Bluefin have two populations: one large, one small.

The European population and North African -- the Eastern bluefin tuna --

50,000 tons over the last decade almost every year.

at the West or the Eastern bluefin population,

there's been tremendous decline on both sides,

For that, bluefin have been given a status

for an endangered species listing in the past two months.

that international long lines and pursing

and everyone in the room knows what it looks like

I doubt anyone has seen a giant bluefin feed.

what's the problem for all of us in the room.

It's the 21st century, but we really have only just begun

to really study our oceans in a deep way.

that's allowing us to see the Earth from space

And we've got to use these technologies immediately

look out at the ocean and see this homogeneous sea.

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【TED】Barbara Block: Tagging tuna in the deep ocean (Barbara Block: Tagging tuna in the deep ocean)

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