Watch the mooring line, sir.

All deck divisions, break out mooring lines for towing.

Dolphins and toothed whales use echolocation.

Dolphins, pretty big brains, play a lot.

Dolphins, pretty big brains, play a lot.

Some dolphins come playing near the boat.

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

If you are a child under the age of 10 who haven't been ruined yet, you will look at this image and see dolphins. Now, some of you adults here are saying, What dolphins? What dolphins?

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

And I was thinking of humpback whales breaching and dolphins.

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

The lilting cry of Calypso It is sharper than the dolphins.

PCBs accumulate in dolphins in Sarasota Bay, in Texas, in North Carolina.

Here's a diagram of the PCB load of dolphins in Sarasota Bay.

The dolphins are not fish, but mammals close enough to the dogs.

On the left hand side, there's a new type of mooring, which I'll show you in just a second.

Dolphins communicate together by means of shrill cries that resound through the walls.

The first thing that got me interested in the sounds of these underwater animals, whose world was so foreign to me, was evidence from captive dolphins that captive dolphins could imitate human sounds.

And (Noah) said Embark. In the name of God be its course and mooring. My Lord is surely forgiving and kind.

And (Noah) said Embark. In the name of God be its course and mooring. My Lord is surely forgiving and kind.

So what you see in this particular ambiguous figure is, of course, the dolphins, right?

And he said Embark therein! In the name of Allah be its course and its mooring. Lo! my Lord is Forgiving, Merciful.

And he said Embark therein! In the name of Allah be its course and its mooring. Lo! my Lord is Forgiving, Merciful.

A 3D animation of a number of sharks, dolphins, and whales. Written by Mark Kilgard 1998.

It's holiday for the dolphins. They came by the hundreds, as we had never seen before.

On the same day, regulations were also introduced under the Port Ordinance, imposing new controls on the mooring of all types of small vessels.

What this figure shows is the percentage of the separations in which dolphins whistle, against the maximum distance.

And he moved away because it was his last fishing trip, and he knew that the dolphins scare fish.

And he moved away because it was his last fishing trip, and he knew that the dolphins scare fish.

How many of you here see dolphins? Raise your hand if you see dolphins. OK, those people who raised their hands, afterwards, the rest of the audience, go talk to them, all right? Actually, this is the best example of priming by experience that I know.

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

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

So when dolphins are separating by less than 20 meters, less than half the time they need to use whistles.

Let's now take a step back and see what this message can tell us about protecting dolphins from human disturbance.

It turns out that a lot of dolphins are being sold as meat in the whale meat market around the world.

And two boats When the second boat was added, what happened was that some of the dolphins left the area completely.

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

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

But it turns out that when just a single boat is approaching a group of dolphins at a couple hundred meters away, the dolphins will start whistling, they'll change what they're doing, they'll have a more cohesive group, wait for the boat to go by, and then they'll get back to normal business.

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

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

So, it's not just dogs and cats and whales and dolphins that you should be aware of and interested in on this little journey.

But in fact, if you reversed the figure ground in other words, the dark areas here I forgot to ask for a pointer but if you reverse it, you'll see a whole series of little dolphins. By the way, if you're also a student at CalTech they also tend to just see the dolphins. It's based on experience.

One of the important features of the programme was the transfer of technology for removing dolphins safely from purse seine nets among all the nations involved.

When we think of marine protected areas for animals like dolphins, this means that we have to be quite conscious about activities that we thought were benign.