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

Tuna!

Oh, tuna fish!

These are the tuna, the billfish and the sharks.

This was a harpoon gun... he was, er, skindiving.

The distribution and relative abundance of many pelagic fisheries resources such as tuna, squid, sardines and anchovies were related to surface oceanographic conditions.

These tuna swim the entire ocean.

Sushi?

Sole, snoek and tuna occur on the continental shelf along the coastline.

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.

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

Three tunas tagged.

This tuna is actually moving on a numerical ocean.

The varieties landed are tuna, bonito, mackerel, squid, shark, lobster and shrimp.

We bring the tuna out, we measure it.

That is where the tuna spawn.

Bluefin are in cave paintings in France.

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.

Most of the turtles, sharks, tunas and whales are way down in numbers.

Barbara Block Tagging tuna in the deep ocean

And for the first time, we're able to watch the journey of a tuna beneath the ocean using light and photons to measure sunrise and sunset.

As of 1 January 2002, the use of drift nets to catch tuna and swordfish will be banned, and their use in salmon fishing will be restricted to costal waters.

And if it's tunas you don't care about, perhaps you might be interested that international long lines and pursing chase down tunas and bycatch animals such as leatherbacks, sharks, marlin, albatross.

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

We've actually tagged 1,100 tunas.

Living amongst our tunas our North American tunas are European tunas that go back to the Med.

So we can save the bluefin tuna.

Earlier this year, the U.S. warned that albacore and bigeye tuna, also caught with longlines, are being overfished in the Pacific.

Now bluefin, in general, goes to one place Japan.

We go in the tanks with the tuna we touch their naked skin it's pretty amazing. It feels wonderful.

Its economy depends on the tuna fish canning industry.

As awareness grows, levels of consumption of large predatory fish such as tuna and swordfish are dropping.

There is no palm wine, fish, salt, or calabash.

Salted, dried, smoked fish

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

Now, I've been working with tunas for over 15 years.

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

HC So the key thing to remember here is, we don't really care what this tuna really is.

The case involved the apprehension of the tuna vessel Connie Jean off the coast of Peru with 100 tonnes of tuna on board.

They're the largest of the tunas, the second largest fish in the sea bony fish.

There is especially high demand in foreign markets for tuna, shark, lobster and shrimp.

Recent studies have documented the rapid decline of large predatory fish species such as billfish, sharks and tuna.

To that end and despite the fact that the export of tuna constitutes about 94 per cent of all export earnings of fish, Fiji has reduced the number of tuna fishing licenses issued annually from 103 in 2002 to 72 in 2005.

The advisory also included a caveat that women should eat no more than 12 ounces of light tuna a week and no more than six ounces a week of white tuna.

We're at the edge of the Brine Pool, there's a fish that's swimming towards the camera.