So we can save the bluefin tuna.

That's the size they have to be to protect the bluefin tuna.

We're still killing bluefin tuna truly endangered and much more valuable alive than dead.

The European population and North African the Eastern bluefin tuna is fished at tremendous levels

We've actually taken a sliver of the ocean, put it behind glass, and we together have put bluefin tuna and yellowfin tuna on display.

I've been fascinated for a lifetime by the beauty, form and function of giant bluefin tuna.

And every single day these tuna, bluefin like this, are stacked up like cordwood, just warehouse after warehouse.

Tuna! Oh, tuna fish!

Hey, tuna.

Tuna. ( excited chatter )

Tuna and shrimp!

Bluefin are warmblooded like us.

Bluefin are in cave paintings in France.

The tuna catch is declining.

Take tuna, a major drawback.

I'm gonna sail for tuna.

Now bluefin, in general, goes to one place

Bluefin have two populations one large, one small.

That is where the tuna spawn.

Bluefin are pursued wherever they go there is a gold rush on Earth, and this is a gold rush for bluefin.

I doubt anyone has seen a giant bluefin feed.

Phoenix Islands is a major tuna location.

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

We bring the tuna out, we measure it.

The tuna is running You hear that? ( laughing )

The tuna team from TOPP has done the unthinkable three teams tagged 1,700 tunas, bluefin, yellowfin and albacore all at the same time carefully rehearsed tagging programs in which we go out, pick up juvenile tunas, put in the tags that actually have the sensors, stick out the tuna and then let them go.

Now, bluefin were revered by Man for all of human history.

This tuna is actually moving on a numerical ocean.

That could be tuna sex and there it is.

These are the tuna, the billfish and the sharks.

The singing of the reel under 750 pounds of Nova Scotia bluefin.

These animals and their demise occurs in the tuna fisheries.

I'm haunted by the thought of what Ray Anderson calls tomorrow's child, asking why we didn't do something on our watch to save sharks and bluefin tuna and squids and coral reefs and the living ocean while there still was time.

It's hard to study a bluefin on its turf, the entire Pacific realm.

The Phoenix Islands and all the equatorial parts of our planet are very important for tuna fisheries, especially this yellowfin tuna that you see here.

And when I see that tuna this is my favorite view

Me, I know one thing, them tuna fish ain't gonna wait.

So the key now is to make it behave like tuna.

You've got pole caught yellowfin tuna here comes from sustainable stocks.

Some of you may be guilty of having contributed to the demise of bluefin.

The tuna is running again, Joe. I heard it on the radio.

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

And that tuna thinks it's going to Japan, but it's staying in place.

But that's about half the size of the biggest tuna we've ever tagged.

How am I gonna take my boat chasing tuna, 5 00 tomorrow morning?