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

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

Dolphin

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

A dolphin is a mammal.

That's a dolphin tail there, guys.

Baby dolphin and baby llamas. Everybody look.

A dolphin is a kind of mammal.

The dolphin is a very intelligent animal.

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

And if we look at a very pristine environment like western Australia, Lars Bider has done work comparing dolphin behavior and distribution before there were dolphin watching boats.

It oscillates its tail up and down like a dolphin.

The dolphin and trainer communicated much better than we expected.

Even though they were labeled whale meat, they were dolphin meat.

And at this age, my personal idol was Flipper the dolphin.

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

And those dolphin parts had a huge load of PCBs, dioxins and heavy metals.

He said that in 30 years of fishing he had never seen a dolphin do that.

Most of these distinctive signature whistles are quite stereotyped and stable through the life of a dolphin.

But at least it's labeled correctly, and you're no longer going to be buying toxic dolphin meat instead.

Anybody looking at this picture will know this dolphin is surrounded, and clearly his behavior is being disrupted.

This is some shot, by Dr. Mike Latz at Scripps Institution, of a dolphin swimming through bioluminescent plankton.

Animals like the Ganges river dolphin which is just down to a few left, and it is also critically endangered.

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

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

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

This is one of the last repositories of the Ganges river dolphin, various species of turtles, thousands of migratory birds, and fishing is causing problems like this.

Well, in a place like Sarasota, Florida, the average interval between times that a boat is passing within a hundred meters of a dolphin group is six minutes.

But he told Ted that on the last day he went out, a bottlenose dolphin suddenly appeared next to the boat, and it was splattering oil out its blowhole.

This is a picture of a trainer's whistle, a whistle a trainer will blow to tell a dolphin it's done the right thing and can come get a fish.

This is 20 year old dolphin living in Florida, and she had these lesions in her mouth that, over the course of three years, developed into invasive squamous cell cancers.

I remember sitting at my desk being about the only person in the world who knew that whale meat being sold in these markets was really dolphin meat, and it was toxic.

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.

It's obvious that most of the things we think about that have lost their body hair, mammals without body hair, are aquatic ones, like the dugong, the walrus, the dolphin, the hippopotamus, the manatee.

Humpbacks, when they develop the ability to sing this song, they're listening to other whales and modifying what they sing based on what they're hearing, just like song birds or the dolphin whistles I described.

A pulse of energy generated in that vast expanse of water neared a submerged line of rocks and reared up in front of me in a green wall. As the wave began to break, a dolphin leapt out ahead of the foam, its entire body clear of the water.