The Yangtze at 6,380 km is Asia's longest river.

You see a dolphin here, and there's a dolphin, and there's a dolphin.

Now, a dolphin, mother dolphin, any dolphin there's only one way that a PCB can get out of a dolphin.

Some of them were dolphin liver. Some of them were dolphin blubber.

Chairman Zhang Dejiang attended the meeting

Who fleed from home in Yangtze River

Pretty girls!

But 1 3 year ago fleed from home along Yangtze River

The death rate in these dolphins, for the first calf born of every female dolphin, is 60 to 80 percent.

A dolphin is a mammal.

When a male dolphin leaves Mom, it will often join up with another male and form an alliance, which may last for decades.

So he moved away from it, turned around a few minutes later, it was right next to the side of the boat again.

Or the blowfish.

Some dolphins come playing near the boat.

Those females, they're not trying to.

A dolphin is a kind of mammal.

She's the guinea pig of the family.

By contrast, the signature whistle which dolphins use to stay in touch, each individual here has a radically different call.

The blowfish is like the Incredible Hulk.

The dolphin is a very intelligent animal.

And he caught a swellfish. A great big puffer, too.

Just a year later the Yangtze flooded, causing something like 5,500 deaths.

It oscillates its tail up and down like a dolphin.

That's a dolphin tail there, guys.

Dolphins and toothed whales use echolocation.

Dolphins, pretty big brains, play a lot.

The Yellow River and the Yangtze River have become the cradle of ancient Chinese civilization.

In normal life for mother and calf dolphin, they'll often drift apart or swim apart if Mom is chasing a fish, and when they separate they have to get back together again.

Juveniles a huge load.

I'm going to draw this blowfish uninflated.

The Dolphin.

Naoetsu?

Hey, Tokie.

Dolphins, pretty big brains, play a lot.

Baby dolphin and baby llamas. Everybody look.

lfJiangxi falls then Jiangsu and Zhejiang can't hold.

Matsue

The dolphins eat the fish that have PCBs from the plankton, and those PCBs, being fat soluble, accumulate in these dolphins.

For example, in oceanography, a lexicon of dolphin language is actually being created by basically visualizing the sonar beams that the dolphins emit.

Of the ones that stayed, their reproductive rate declined.

Here's a dolphin where the fin's been re attached.

In 2004, the police department re commissioned the police launch Dolphin.

Zhemgang

Jiangsu

Jiangxi