Dolphins and toothed whales use echolocation.

It was during the ice age that the saber toothed tiger became extinct.

So blue whales and fin whales produce very low frequency sounds that can travel over very long ranges.

It's actually about humpback whales.

These humpback whales were getting killed.

There are still some blue whales.

The first offshore wells were called whales.

It is believed that whales have their own language.

We emptied the ocean of the whales at that time.

There's a lot of noise, which is mostly other whales.

Greenpeace was thrilled. The whales were happy. That's a quote.

I study fish, also the bigger things, whales and dolphins.

Chimpanzees, killer whales, these kinds of creatures, they have culture.

And I was thinking of humpback whales breaching and dolphins.

Whales are said to have lived on land long ago.

Introduction of red down here, when whales are being cut up.

Whales also have contact calls like I described for the dolphins.

Thirty years ago, Australian vessels, with the government s blessing, killed sperm whales off the West Australian coast. Last month, Australia led international protests against Japan s plan to kill 50 humpback whales.

Indeed, Japan s desire to continue to kill whales is no less motivated by emotion than environmentalists opposition to it. Eating whales is not necessary for the health or better nutrition of the Japanese.

There's a variety of things you can learn from watching whales have sex.

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

I'm going to show you pictures of beluga whales, bowhead whales, and narwhals, and polar bears, and leopard seals today, but this picture right here means more to me than any other I've ever made.

So, very unexpectedly, they ran out of customers before they ran out of whales.

That he asked for only one thing a gift of two healthy sperm whales?

We can go actually and swim around on Google Earth and visit with humpback whales.

I'll play the sound of a contact call used by right whales to stay in touch.

One of the best places in the world to see blue whales is here in this region.

In 1991, about 4 million people in 31 countries watching whales and other cetaceans generated 317.9 million.

Endangered whales are killed every year by ship collision, and it's very important to try to reduce this.

Now, in the Exxon Valdez spill, about 30 percent of the killer whales died in the first few months.

The next slide will show what the impact this may have on the range at which whales can communicate.

Over the last 50 years, as we've put more noise into the oceans, these whales have had to shift.

So to conclude, I'd just like to point out, you know, the whales live in an amazing acoustic environment.

Coming closer to here, the Costa Rica Dome is a recently discovered area potentially year round habitat for blue whales.

The colorized area shows the risk of collision for endangered right whales because of the ships moving in this lane.

To see wait a minute, we can go kshhplash! right there, ha under the ocean, see what the whales see.

And that water that you see there is the open lead, and through that lead, bowhead whales migrate north each springtime.

This shows us both that the calls are detectable over hundreds of miles and that whales routinely swim hundreds of miles.

There's a potential problem that maybe this kind of shipping noise would prevent whales from being able to hear each other.

Or the Antarctic, where the continent is protected, but the surrounding ocean is being stripped of its krill, whales and fish.

I've been working on whales and dolphins in Ireland for 20 years now, and they're kind of a bit more dramatic.

These copepods are a major constituent of the oceans, and they are a major part of the diet of grazing baleen whales.

And then finally to basically get the message home maybe use live links from animals such as blue whales and white sharks.

According to Saudi Arabia, these deaths include 57 bottlenose dolphins, 13 humpback whales, one finless porpoise, 14 dugongs and eight unidentified cetaceans.

Thank you so much. I'm going to try to take you on a journey of the underwater acoustic world of whales and dolphins.