I grew up in Mobile, Alabama --

somebody's got to be from Mobile, right? --

and Mobile sits at the confluence of five rivers,

forming this beautiful delta.

And the delta has alligators crawling

in and out of rivers filled with fish

and cypress trees dripping with snakes,

birds of every flavor.

It's an absolute magical wonderland to live in --

if you're a kid interested in animals, to grow up in.

And this delta water flows to Mobile Bay, and finally into the Gulf of Mexico.

And I remember my first real contact with octopus

was probably at age five or six.

I was in the gulf, and I was swimming around and saw a little octopus on the bottom.

And I reached down and picked him up, and immediately

became fascinated and impressed by its speed and its strength and agility.

It was prying my fingers apart and moving to the back of my hand.

It was all I could do to hold onto this amazing creature.

Then it sort of calmed down in the palms of my hands

and started flashing colors,

just pulsing all of these colors.

And as I looked at it, it kind of tucked its arms under it,

raised into a spherical shape

and turned chocolate brown with two white stripes.

I'm going, "My gosh!" I had never seen anything like this in my life!

So I marveled for a moment, and then decided it was time to release him,

so I put him down.

The octopus left my hands and then did the damnedest thing:

It landed on the bottom in the rubble

and -- fwoosh! -- vanished

right before my eyes.

And I knew, right then, at age six,

that is an animal that I want to learn more about. So I did.

And I went off to college and got a degree in marine zoology,

and then moved to Hawaii and entered graduate school

at the University of Hawaii.

And while a student at Hawaii, I worked at the Waikiki Aquarium.

And the aquarium had a lot of big fish tanks

but not a lot of invertebrate displays,

and being the spineless guy, I thought, well

I'll just go out in the field and collect these wonderful animals

I had been learning about as a student

and bring them in, and I built these elaborate sets and put them on display.

Now, the fish in the tanks were gorgeous to look at,

but they didn't really interact with people.

But the octopus did.

If you walked up to an octopus tank,

especially early in the morning before anyone arrived,

the octopus would rise up and look at you

and you're thinking, "Is that guy really looking at me? He is looking at me!"

And you walk up to the front of the tank. Then you realize

that these animals all have different personalities:

Some of them would hold their ground,

others would slink into the back of the tank and disappear in the rocks,

and one in particular, this amazing animal ...

I went up to the front of the tank, and he's just staring at me,

and he had little horns come up above his eyes.

So I went right up to the front of the tank --

I was three or four inches from the front glass --

and the octopus was sitting on a perch, a little rock,

and he came off the rock and he also came down right to the front of the glass.

So I was staring at this animal about six or seven inches away,

and at that time I could actually focus that close;

now as I look at my fuzzy fingers I realize those days are long gone.

Anyway, there we were, staring at each other,

and he reaches down and grabs an armful of gravel

and releases it in the jet of water entering the tank

from the filtration system,

and -- chk chk chk chk chk! -- this gravel hits the front of the glass and falls down.

He reaches up, takes another armful of gravel, releases it --

chk chk chk chk chk! -- same thing.

Then he lifts another arm and I lift an arm.

Then he lifts another arm and I lift another arm.

And then I realize the octopus won the arms race,

because I was out and he had six left. (Laughter)

But the only way I can describe what I was seeing that day

was that this octopus was playing,

which is a pretty sophisticated behavior for a mere invertebrate.

So, about three years into my degree,

a funny thing happened on the way to the office,

which actually changed the course of my life.

A man came into the aquarium. It's a long story, but essentially

he sent me and a couple of friends of mine to the South Pacific

to collect animals for him,

and as we left, he gave us two 16-millimeter movie cameras.

He said, "Make a movie about this expedition."

"OK, a couple of biologists making a movie --

this'll be interesting,"

and off we went. And we did, we made a movie,

which had to be the worst movie ever made

in the history of movie making,

but it was a blast. I had so much fun.

And I remember that proverbial light going off in my head,

thinking, "Wait a minute.

Maybe I can do this all the time.

Yeah, I'll be a filmmaker."

So I literally came back from that job,

quit school, hung my filmmaking shingle

and just never told anyone that I didn't know what I was doing.

It's been a good ride.

And what I learned in school though was really beneficial.

If you're a wildlife filmmaker

and you're going out into the field to film animals,

especially behavior,

it helps to have a fundamental background

on who these animals are,

how they work and, you know, a bit about their behaviors.

But where I really learned about octopus

was in the field, as a filmmaker

making films with them,

where you're allowed to spend large periods of time

with the animals, seeing octopus being octopus

in their ocean homes.

I remember I took a trip to Australia,

went to an island called One Tree Island.

And apparently, evolution had occurred

at a pretty rapid rate on One Tree,

between the time they named it and the time I arrived,

because I'm sure there were at least three trees

on that island when we were there.

Anyway, one tree is situated right next to

a beautiful coral reef.

In fact, there's a surge channel

where the tide is moving back and forth, twice a day, pretty rapidly.

And there's a beautiful reef,

very complex reef, with lots of animals,

including a lot of octopus.

And not uniquely

but certainly, the octopus in Australia

are masters at camouflage.

As a matter of fact,

there's one right there.

So our first challenge was to find these things,

and that was a challenge, indeed.

But the idea is, we were there for a month

and I wanted to acclimate the animals to us

so that we could see behaviors without disturbing them.

So the first week was pretty much spent

just getting as close as we could,

every day a little closer, a little closer, a little closer.

And you knew what the limit was: they would start getting twitchy

and you'd back up, come back in a few hours.

And after the first week, they ignored us.

It was like, "I don't know what that thing is, but he's no threat to me."

So they went on about their business

and from a foot away, we're watching mating

and courting and fighting

and it is just an unbelievable experience.

And one of the most fantastic displays

that I remember, or at least visually,

was a foraging behavior.

And they had a lot of different techniques

that they would use for foraging,

but this particular one used vision.

And they would see a coral head,

maybe 10 feet away,

and start moving over toward that coral head.

And I don't know whether they actually saw crab in it, or imagined that one might be,

but whatever the case, they would leap off the bottom

and go through the water and land right on top of this coral head,

and then the web between the arms

would completely engulf the coral head,

and they would fish out, swim for crabs.

And as soon as the crabs touched the arm, it was lights out.

And I always wondered what happened under that web.

So we created a way to find out, (Laughter)

and I got my first look at that famous beak in action.

It was fantastic.

If you're going to make a lot of films about a particular group of animals,

you might as well pick one that's fairly common.

And octopus are, they live in all the oceans.

They also live deep.

And I can't say octopus are responsible

for my really strong interest

in getting in subs and going deep,

but whatever the case, I like that.

It's like nothing you've ever done.

If you ever really want to get away from it all

and see something that you have never seen,

and have an excellent chance of seeing something

no one has ever seen, get in a sub.

You climb in, seal the hatch, turn on a little oxygen,

turn on the scrubber,

which removes the CO2 in the air you breathe, and they chuck you overboard.

Down you go. There's no connection to the surface

apart from a pretty funky radio.

And as you go down, the washing machine

at the surface calms down.

And it gets quiet.

And it starts getting really nice.

And as you go deeper, that lovely, blue water you were launched in

gives way to darker and darker blue.

And finally, it's a rich lavender,

and after a couple of thousand feet, it's ink black.

And now you've entered the realm

of the mid-water community.

You could give an entire talk

about the creatures that live in the mid-water.

Suffice to say though, as far as I'm concerned,

without question, the most bizarre designs

and outrageous behaviors

are in the animals that live in the mid-water community.

But we're just going to zip right past this area,

this area that includes about 95 percent

of the living space on our planet

and go to the mid-ocean ridge, which I think is even more extraordinary.

The mid-ocean ridge is a huge mountain range,

40,000 miles long, snaking around the entire globe.

And they're big mountains, thousands of feet tall,

some of which are tens of thousands of feet

and bust through the surface,

creating islands like Hawaii.

And the top of this mountain range

is splitting apart, creating a rift valley.

And when you dive into that rift valley, that's where the action is

because literally thousands of active volcanoes

are going off at any point in time

all along this 40,000 mile range.

And as these tectonic plates are spreading apart,

magma, lava is coming up and filling those gaps,

and you're looking land -- new land --

being created right before your eyes.

And over the tops of them is 3,000 to 4,000 meters of water

creating enormous pressure,

forcing water down through the cracks toward the center of the earth,

until it hits a magma chamber

where it becomes superheated

and supersaturated with minerals,

reverses its flow and starts shooting back to the surface

and is ejected out of the earth like a geyser at Yellowstone.

In fact, this whole area

is like a Yellowstone National Park with all of the trimmings.

And this vent fluid is about 600 or 700 degrees F.

The surrounding water is just a couple of degrees above freezing.

So it immediately cools,

and it can no longer hold in suspension

all of the material that it's dissolved,

and it precipitates out, forming black smoke.

And it forms these towers, these chimneys

that are 10, 20, 30 feet tall.

And all along the sides of these chimneys

is shimmering with heat and loaded with life.

You've got black smokers going all over the place

and chimneys that have tube worms

that might be eight to 10 feet long.