Equipment wise, and weather wise, you psychologically prepare yourself
cos you've been planning an expedition for two years,
and you go there and it goes wrong.
Sailors were actually terrified to come to this area because it was so dangerous.
And ships did not return.
Let go of the line a little bit!
'LF.' LF.
Comms check. Comms check.
He didn't hear me. He didn't acknowledge.
Humankind has explored every continent on Earth.
Climbed its tallest mountains.
And even journeyed into space.
'Thank you, Mr President.'
But there's a vast swathe of our own planet
that has remained a mystery.
The deep ocean.
Stretching down over 35,000 feet into crushing pressures,
it's been near impossible to reach.
Until now.
New engineering breakthroughs are driving an audacious global mission
to dive to the deepest points of all the five oceans,
for the first time in history.
These pioneers will push technology to the limit...
What the hell was that? We have a leaking hatch.
..to open up this final frontier as never before.
Trying to mentally put yourself at the bottom is just mind-blowing.
Mapping hidden landscapes, discovering unknown lifeforms.
What on Earth is that?
And unlocking the secrets of how life in the extreme deep ocean
affects our entire planet.
OK, good to go. Good to go.
Extreme explorer and ex naval commander Victor Vescovo
is putting his life on the line, as well as 50 million dollars
of his own money to pursue his dream.
Good boy. What little boy or little girl
doesn't grow up wanting to be an explorer?
And here I am with a wonderful ship, a great crew,
now the deepest submersible in the world
and I get to play in the ocean with it and discover things
that have never been seen before. How could you not be absolutely ecstatic?
His mission is to travel to each of the five oceans,
discover their deepest point
and unlock their unexplored secrets.
He has already travelled over five miles down
to the very bottom of the Atlantic Ocean.
Oh, my goodness. I can see the bottom.
Now he and his team are heading for a far tougher challenge.
The Southern Ocean.
It surrounds the frozen continent of Antarctica.
These are the coldest waters on the planet
and some of the roughest seas,
making it perhaps the most dangerous of all the Earth's oceans.
Some of the old-style maps had "here be dragons"
and sailors were actually terrified to come to this area
because it was so dangerous. And ships did not return.
They would be destroyed.
Rising winds are already testing the crew and equipment.
Getting a little brisk out here already.
It's lovely. Might have to take the shorts off.
Will have to go to long pants soon.
Boy, it came up, huh?
Colin, you need more stuff?
Soon, they're experiencing a full-scale snow storm.
me.
It should be dead ahead somewhere.
I'll just lower the starboard a little bit.
Yeah, I got it.
In this life, I'd rather be lucky than good.
And when it comes to weather, you definitely want to be lucky.
Victor is worried about the effects of the cold
on the expedition's vital navigation equipment.
Batteries look OK.
Modems.
Yeah, these guys did well.
Very strange seeing snow on my landers.
The snow storm has been an early warning
of the treacherous weather that could lie ahead.
To search for the ocean's deepest point,
Victor and his team are heading for a dramatic underwater chasm
called the South Sandwich Trench.
Over four and a half miles deep,
its waters drop below freezing
and are under huge pressure.
Five times the crushing power of a junkyard car compactor.
It's very rarely visited. And certainly no-one has ever mapped
the South Sandwich Trench.
Certainly not with the kind of tools we will have available.
This is very exciting for the whole crew
because this is true exploration.
To protect Victor from
the deadly pressures at the bottom of the trench,
he has commissioned a remarkable prototype sub
at a cost of 35 million dollars.
Surrounding the cockpit is a sphere
of 3.5-inch thick titanium
punctured by wide-angled view ports made of acrylic.
It's equipped with enough oxygen tanks
to give him air for up to four days.
But in the Southern Ocean, the sub will have to endure
temperatures far colder than any it's experienced before.
We'll have surface temperatures that are starting at zero,
or one degree, rather than where we were before
where the surface temperatures were 25 or 30 degrees Celsius.
At depth, it'll be minus one.
It's enough to affect our cabling, our connectors, our batteries.
If the dive succeeds, the expedition scientists
will be able to hunt for unknown creatures of the deep...
Prepare lights on sub.
..and try to solve one of the Southern Ocean's greatest mysteries.
These waters are, in fact, packed with oxygen and nutrients
vital to life
and are the source of a global ocean current
that feeds the world.
Scientists are desperate to find where this lifeblood current
exits the Southern Ocean.
The South Sandwich Trench is a prime suspect.
But no-one has been able to dive deep enough to confirm it.
The Southern Ocean, in my opinion,
is one of the most important locations of the planet.
It's the lungs of Earth.
It's vital to global ocean circulation.
So we need to know more. We want to know more.
To make their bold attempt, Victor and his team
only have a short window of time.
The brief Antarctic summer,
when the pack ice that locks in over seven million square miles of ocean,
melts and retreats.
You look at the Southern Ocean, every winter we grow
almost the equivalent of the Continental United States.
And in summer, melt that entire continent back.
To make their final preparations before reaching the deep trench,
the team are docking at the remote island of South Georgia.
Yeah, you wouldn't want to anchor here.
Maybe a little too much chain.
It's home to hundreds of thousands of king penguins.
One of the largest penguin species on Earth.
There are fur seals.
And enormous elephant seals
that can weigh in at over 8,000 pounds.
There are only a few days left of the Antarctic summer
and the window to find and dive the deepest point in the Southern Ocean
is closing. But first,
they must trial a new launch method.
During their first expedition to the Atlantic deep,
Victor boarded the sub from an inflatable RIB.
But catastrophe hit as rough seas caused Victor to slip.
In the tropical temperatures around Puerto Rico,
the risks were minimal.
But here, in Antarctic waters,
a similar accident would put his life in serious danger.
It's a really dangerous situation
that I'm worried about.
And we've got a whole risk management plan
to deal with that exact issue.
The crew have worked out a way to suspend the sub
against a giant buffer at the back of the ship,
allowing Victor access via a carbon fibre plank.
But there's still a steep drop between the ship and submarine.
That's kind of the gap we're worried about.
If someone falls in that gap, that would be not a good thing.
You're gonna be moving around a little bit more
when we're in the rougher seas. But it's still high enough
that it'll stay with the ship. It'll move with the ship and the sub will move together.
It's gonna be nice and stable.
A little easier than clambering up that .
One, two... Beautiful.
Great.
I didn't sleep at all last night, just thinking about
that boarding system. But, er,
it went really well.
The team are finally ready to embark on their first test dive
in the Southern Ocean.
I'm excited. I'm clear.
But beyond the sheltered headlands of South Georgia,
it won't be easy.
The Southern Ocean is by far the most risky environment.
You have these enormous storm systems
that create swell, and this swell batters the side of a ship,
batters the side of a submersible,
then the submersible sinks down into
what could possibly be a very strong ocean jet.
We'd have to fight that jet down to stay in one place
all the way down until it gets within the confines of the trench.
And then it would be safe and sheltered.
100 miles away from the deepest point,
the team sees the chance of a break in the weather
to take the sub on an exploratory dive.
It's an opportunity for Chief Scientist Alan Jamieson
to search for new creatures of the deep
and for Victor to put the sub through its paces
in the Southern Ocean's freezing waters.
In the spotlight is the sub's designer, John Ramsay.
Mechanically, everything is great at cold temperatures.
It's the electrical issues
with cold circuit boards and things like that.
Just hoping everything's gonna be fine for the guys.
First, the team needs to launch their 35-million-dollar sub
off the back of a ship being buffeted by the volatile Southern Ocean.
The most dangerous part of any of our operations
will always be launch and recovery.
That's when you're dealing with forces that are unpredictable,
and managing that is a difficult thing.
We're ready to launch here. We're rolling, but we'll give it a shot.
Let's do this. Out on the A-frame.
Following the tagline slowly.
The waves are coming in behind us.
Be advised, it's gonna get a little sloppy here for a minute.
This is where we start to rock 'n' roll. Here we go, boys.
You're gonna have to go quick. This is the worst part.
Back on the main! Back on the main!
We're out of time. Let go of the line a little bit!
me. Just hang on. Hang on, buddy.
Get that out on the tow line! Whoa, whoa, whoa, whoa!
Why are we doing this?
Out on the tow line.
To have that happen right at the moment you're releasing it.
You know, that's a sickening feeling.
Status, please? Just be advised, uh,
looks like you may have lost some starboard panel.
Roger that. Permission to dive.
Negative, negative. You won't be released until...
Then let's pick up the, uh... Yep.
What happened to the tow line? We broke the tow line.
We'll get her, Ricky.
Without its tow line, the sub is now adrift.
The team must clear the remaining lines
and avoid getting freezing water inside their protective clothing.
In the cold water of the Southern Ocean,
if you go into the water, you've only got about a minute
before you're in serious trouble.
Let's get ready in case he falls in the water.
What am I supposed to do?
After rough seas caused the sub to collide with the back of the ship on launch,
the sub has lost one of its external cameras.
The team can't see any other damage
and decide to press ahead with the dive.
LF, this is SO. Yeah, go ahead.
OK, you're clear to dive. Clear to dive.
Pumping in. OK, here we go.
We're descending. We're underwater.
It's eerily quiet. Yeah.
The green colour of the water here
is evidence of what makes the Southern Ocean
so vital to life around the world.
Plentiful nutrients build up here
during the long, dark winters,
and in the summer feed explosions of microscopic plants
called phytoplankton.
They bloom in such quantities
that NASA has even been able to track them from space.
It was mind-blowing that on that type of scale
in the Southern Ocean, the phytoplankton were responding to the surface currents
and the winds, and their distribution,
and you could see that from space.
Plants depend on light
and so they live in a narrow band near the surface,
the Sunlight Zone.
And here, they in turn support an abundance
of microorganisms called krill
which feed a rich food chain, from penguins...
..to killer whales.
Passing below 650 feet,
the sub enters the Twilight Zone.
Here, the light dwindles and the ocean's microscopic plants
can no longer survive.
Yet life does thrive here.
Like this ice fish. Its blood still runs
because it has a natural antifreeze in its veins.
And transparent, jelly-like organisms called salps
that string together in long chains.
Look how dark it is. That's incredible, isn't it?
Surface, this is LF. Present depth, 348 metres.
Victor and Alan have been underwater for just ten minutes,
but the surface crew have spotted evidence
of a worrying fault with the sub.
I think it's best to report, just in case. Yeah.
Kelvin, Gino. Go ahead.
Looks like I can see a small oil slick.
It seems that when one of the sub's cameras was damaged on launch,
it breached the oil-filled pipes that carry electrical wires around the sub.
It's now only a matter of time before seawater gets in
and shorts out a vital part of the electrical system.
The sub's power comes from six batteries
packed into detachable pods on either side of the sphere.
They, in turn, link to junction boxes
that supply the sub's components.
To protect the wires and electronics from the pressures of the deep,
the boxes and pipes are all filled with oil.
Because oil is lighter than water,
it's now escaping from the breach at the top of the sub,
letting water seep in.
If it reaches the junction box,
it will knock out multiple components,
leaving Victor without full control of the sub
2,000 feet below the surface.
OK, response. Need you to instruct the LF
to abort the dive. They're gonna have to abort the dive.
There are times when you have to call it,
and even if it's unpopular, you do it because
you have to do what's safe.
LF, this is the response. Please abort the dive.
Abort the dive.
Roger that. Aborting dive.
Repeat. Aborting dive. Why?
When we lost the camera, it sheared the cable
so oil started leaking. Oh.
Victor must now make a controlled release
of enough diving weights to bring the sub safely back to the surface.
Ejecting weights.
All weights jettisoned. Ascending to surface.
Get ready to brace.
We had to abort you, man. Cos you would have lost your...
you'd have lost your modem anyway. I know.
At some point, you'd have come up even if you didn't want to.
Repairs to the damaged sub begin.
OK, try it a little bit.
And the team encounter another deadly hazard
of the Southern Ocean.
Icebergs.
A specialist ice pilot has joined forces with the captain
to navigate through these unpredictable ship sinkers.
Nine tenths of an iceberg is underneath the ice.
And I've seen icebergs going against the wind
which is completely not intuitive.
To begin with, the icebergs are relatively small.
But then comes a monster.
That's the target. It's dead ahead of us now.
Is this the biggest you've ever... I've never seen one this big.
It's extraordinary. It goes off into the horizon.
And it disappears off into the fog.
And then disappears off into the fog on the other side.
This is massive! How long is it, Stu?
18 miles, this one, I think. More than a half marathon long.
Icebergs actually pose a true danger,
so when I'm coming up from the bottom
I don't want to be going up too fast because I don't know
what's directly on top of me.
Finally, the team arrive above the South Sandwich Trench,
a vast underwater canyon
that's a staggering 4.5 miles deep.
Their first task is to identify on the floor of the trench
the precise location of the deepest point in the Southern Ocean.
Using one of the most powerful sonar scanning systems in the world,
they begin to map, for the very first time in history,
an extraordinary hidden landscape.
If this were inverted and was a mountain range,
it would actually be higher than the entire Andes mountain chain.
It's massive.
The South Sandwich Trench is a staggering 600 miles long,
stretching from the lower reaches of the Atlantic
down into the Southern Ocean itself.
But up on the bridge, the team spot a growing threat
to the deep dive.
The storms are moving faster than expected.
The two low-pressure systems are causing all this weather to go in a funnel.
We can't outrun it. We point the ship into the storm and we ride it out.
In the freezing waters of the Southern Ocean,
an approaching storm is threatening to derail
Victor's attempt to discover and dive its deepest point.
We are in the screaming 60s.
You do not hang out at this latitude
and not have storms come at you.
Even if it's rough weather, we're gonna tough it out.
Yes, sir. Even if we don't dive, we'll deploy the landers.
The landers are underwater scientific probes
packed with sensors, cameras and traps.
They are vital for the team's mission to explore what life
could possibly exist in the icy waters 24,000 feet below.
Pretty exciting. We're at the limits of this planet.
Ultra-cold and high pressure is very hard to adapt to.
There are five landers on board,
costing up to $200,000 each.
But with the storm on its way, to launch and retrieve
these near one-ton monsters could put lives on the line.
Hope it doesn't storm more. We don't want ice forming on the deck.
If any one of us fell in the water,
cos it's so cold down here, you get hypothermia pretty fast.
Hold on tight.
Grab the wire. It's going that way.
Lines off!
It's down.
Despite the conditions, two science probes
are heading for the seabed.
Eight hours later, and after a remote release,
they are due back on the surface.
But now the weather is taking a dramatic turn for the worse.
The nature of what we do is notoriously dangerous
in terms of equipment wise and weather wise.
You psychologically prepare yourself because you can plan an expedition for two years
and you go there and it just goes wrong.
Where are they?
We have the visuals.
About 800 metres away.
Oh, man.
Just watch that. It just takes one little roll.
Getting scary. Come down.
Coming up!
I'm sending the wire.
Where is it?
It hasn't worked.
All right? No.
See what happened to the rope? Yeah.
Looks like something chewed it, doesn't it?
A crucial piece of scientific equipment
and any extreme lifeforms it may have captured
are now plummeting back to the seabed,
never to be seen again.
And now comes more bad news.
The crew have failed to locate
the second probe.
We should be seeing that probe clear as daylight there.
And because the Antarctic winter is now fast approaching,
they must abandon the search and move on.
Very distressing. We have limited time
and with bad weather coming we might not get another chance.
There is better news for the sonar team mapping the trench.
Wow. Where's that?
This is a sea mound that's 1100 metres
off the sea floor.
The sea mound is an extinct underwater volcano.
Previously unknown, the team get to name it.
It's a stark reminder that we know more about the surface of the moon
than the seabed of our own planet.
It's just fantastic.
Nobody knew anything about this area.
And look at all the amazing features that have been imaged by the sonar.
The new data also bolsters the theory
that the South Sandwich Trench is the root of
the mysterious lifeblood current which feeds the world.
When you carve trenches in the ocean,
you create a funnel where water flows.
Are these trenches reservoirs relatively undisturbed?
Or are they dynamic through-flows of water?
To confirm the theory,
the team need to sample the deep trench itself.
And now, for the first time in history,
they've accurately pinpointed the very deepest site
in the Southern Ocean.
Based on the satellite data, this one has always been the one
that we thought was going to be the deepest,
or this last one. No-one considered a third one.
Now we know the deepest point in the Southern Ocean
is the yellow dot right here. Wow.
A staggering 24,388 feet below the surface.
this is Victor's target for a dive
he's determined to take on alone.
Doing things solo, you're completely responsible
for everything that happens. And you're doing it by yourself
with such intense focus. It makes it more interesting.
It's more exciting. You're completely on your own.
There are now just days left before the Antarctic summer ends
and the Southern Ocean becomes too dangerous
to dive. With rough seas forecast for tomorrow,
it's now or never.
But there are major concerns for Victor's safety.
I don't wanna slam into the bottom of an iceberg.
There are huge bricks of ice out there. Apartment-sized blocks of ice.
Despite the risks, they decide to press ahead.
He's gonna make a very careful and deliberate return to the surface.
We want to make sure that he verifies himself
with cameras that the surface is clear.
Just in case we have him misplaced on our chart.
I'm gonna use light power to slowly go up.
I'm not gonna rock it up.
The team prepare to launch Victor
on his historic attempt into the freezing temperatures
of the deep trench beyond any hope of rescue.
OK. You're gonna have a great dive. It'll be awesome.
Going to the bottom of the ocean in a submersible
is like going on a space mission in terms of the isolation.
Hatch coming down! Hatch coming down.
Thank you. OK, let's do this. Get him in, boys.
The cold, extreme remoteness will play on Victor's mind
because if anything goes wrong, you're right at the end
of the most stretched rubber band in history.
And you're really hoping that we'll pull you back.
It's pumping in. Proceeding to dive.
Roger that, I'll try and cross this down. Thanks.
And down we go!
Looking outside the portal, looks like a lot of food down here.
Oh, I just saw a jellyfish.
Surface, LF. Present depth.
Present depth, 487.
Light support good. Roger that, LF.
We have you loud and clear. Well, that was quick.
Whoo!
I mean he is whistling down!
Within just minutes,
Victor reaches the very deepest zones of the Southern Ocean.
The Midnight Zone.
Where no light at all can penetrate.
And where extraordinary creatures are still being discovered.
The giant sea spider whose internal organs
are carried inside its legs.
The feather star, which uses the long spines
along its arms to filter out microscopic food
from the water.
And visitors from above. Deep-diving sperm whales
which have the largest brains of any creature that's ever lived on Earth.
At 13,000 feet,
Victor enters the Abyssal Zone.
Home to sea pigs that inflate up to seven pairs of legs
to walk around the sea floor.
And alarm jellyfish that if attacked
emit bioluminescent flashes
thought to act like a burglar alarm
to attract bigger predators to the scene.
Can already feel the cold coming through the bottom of the submersible.
The temperature of the saltwater outside
has now dipped below freezing.
I'm checking to see if I hear something unusual.
I don't have any systems on. I'm not using thrusters.
It's almost like a hum.
It does sound like a low hum
coming from outside the sub. I haven't heard that before.
There's so much background noise right now.
Seems to be coming from the submarine, you can't hear the surface.
Surface, LF. Present depth five-zero-three-one.
I cannot read you. LF,
comms check. Comms check.
He didn't hear me. He didn't acknowledge.
What's going on with that thing?
Do you read me? Do you read me at all?
As a submarine pilot, you don't want to lose communication with the surface.
That's extremely dangerous. Extremely dangerous.
Status! Status!
What the 's going on where he can't hear us?
Surface, surface. How do you read?
Loud and clear. Loud and clear.
Crystal clear audio. I can hear him.
It's a critical moment in the dive.
Should Victor abandon or continue into the deep?
Maybe it's some cold water or something.
3,00 metres from the bottom. I may just keep going.
I've come all this way. We're gonna achieve the mission here.
I'm not gonna abort for comms out.
As he descends further into the trench,
it's not just the communications system under attack from the freezing Antarctic waters.
The electrical supply to the external cameras
has also cut out.
Well, now I'm really alone.
I don't have comms to the surface,
I'm in a submersible by myself,
going down to the bottom of the Southern Ocean.
In Mission Control, it's been two hours
since they last made contact with the sub.
Attention all stations. Be advised
that we can hear Victor but we cannot communicate with him.
He cannot hear us. He's very close to the lander.
Couple of hundred metres, so he must be near the bottom.
Insulation fault. That's probably just some water residue. Everything's looking good.
I should be getting really close now.
Oh, my.
I can see something on the bottom.
I'm seeing the bottom much more clearly.
I've just reached the bottom of the Southern Ocean.
Looks like a moonscape out of one of my portholes.
Surface, LF. At bottom. Repeat. At bottom.
On the bottom.
I am at bottom.
I'm at the bottom of the Southern Ocean.
Victor is an amazing 24,388 feet
below the surface.
Where no human has ever been before.
The team have also deployed here
their three remaining science probes,
or landers, baited with tempting fish carcasses.
And although Victor's external sub cameras
may have cut out, amazingly
the cameras on the landers are still working.
They now capture Victor's arrival at the bottom.
His lights just visible across the sea floor.
These are the first ever images
captured at the bottom of the South Sandwich Trench.
And attracted by the lander's bait,
there's already a crowd of super-strange specialists
able to endure intense cold and enormous pressure.
See tiny white... they're like perfectly white.
They look like tadpoles.
What's that over there? A larger creature.
Pink on the top. It has a little pink head.
Two big eyes.
Oh, he's definitely swimming. Swimming away from my blast.
It seems that Victor has identified a mysid,
a type of crustacean whose bright red colour
in fact makes it even more invisible in the pitch dark of the deep ocean.
1500 feet further up the trench slope,
a second lander is capturing remarkable images
of the range of life that thrives here.
Sea lilies, and tall, tubular glass sponges.
Both snag passing microorganisms
drifting past in the current.
And higher up the slope still,
a third lander is capturing the first ever footage
in this trench of a truly remarkable creature.
Known as a snail fish,
this is the deepest-living kind of fish yet discovered.
And here are two new species filmed for the very first time.
The snail fish are not here for the bait itself,
but to pick off any scavengers the bait attracts.
Finally, the landers' auto-release mechanisms
activate, and they head back to the surface.
But now comes the massive challenge of safely retrieving
these 200,000-dollar pieces of equipment in heavy seas.
What do we got? I'll just be happy if it lands on deck.
Oh, . The most difficult side to catch it on.
Having lost two landers already,
the pressure is on.
We're gonna have to cross the tag lines. Yeah.
Oh. Don't lose your balance. This thing is a nightmare.
Whoa. Wait. Wait. Wait, wait, wait.
All right, got it. Good.
Right, what does the bait look like?
Oh, here we go.
It's absolutely freezing.
The team have a vital hoard of specimens
from 24,000 feet down
whose chemical secrets could set the stage
for scientific breakthroughs in the future.
Hopefully, we'll discover a few molecules
that have to do with combination of pressure and ultra-cold temperatures.
Those may have all kinds of applications.
In China, they've been able to use the osmolyte that we discovered in deep-sea animals
to actually cure glaucoma, which is a high-pressure disease of the human eye.
Sensors on the landers have also brought back vital information
that could confirm the root of the lifeblood current
carrying nutrients from the Southern Ocean
to the rest of the world.
The data is despatched to the British Antarctic Survey
in the UK, where a team have been tracking the current at shallower depths.
The data we were very kindly given
confirm that this is Antarctic bottom water
and it is going through this trench.
The actual flow through it is tens of times the flow
of the Amazon. Millions of tons a second.
It's a breakthrough that'll be vital for future scientific work.
We can measure the waters flowing through
to see any change, any signals that are happening before it spreads out
across the whole of the world's ocean floor.
These very deep data are gonna be very valuable for a long time.
I think that's a wrap.
Surfacing line release.
And we're heading up.
Two and a half hours after leaving the bottom,
Victor is now approaching the surface.
But after his radio and cameras cut out in the cold,
he has no way of knowing if there's an iceberg in his path.
If there is, the sub could be pinned
beneath the ice with no way out.
Come up slow. Hope I don't hit an iceberg.
I hear a thump, I'm stopping quick.
Going up. Just be patient, Victor.
100 metres to go.
LF, comms check. I hear you.
Have visual?
On surface. Repeat. On surface.
Yeah, we can see you. I see him now.
Welcome back, Victor. Thank you, gentlemen.
It's good to be back. Gino is inbound, should be there in any minute.
Roger that. Gino inbound.
We had some comm issues, but we'll talk about that after.
Just glad to have you back on the surface
and just rigging for recovery. Roger that.
Comms were a problem, but the mission was a success.
Indeed it was. Indeed it was, sir.
Great job. Thank you, sir.
Nice and slow. Nice and slow.
The sub may be safely back on the surface,
but there's a final challenge to overcome
in the volatile waters of the Southern Ocean.
Oh, that was a big wave, guys. The LF does not
like being on the surface.
It's designed to just dive.
Get to the bottom, get there quickly.
And she's like a wild horse when you try to put a rope on it
and it just fights you, right?
Up on the main.
Get it, Steve. Down on the main.
Come on, Steve. Go, go, go.
Go! All right, Steve.
Two hands, man. Up on the main. Up on the main.
That's it. That's it, Patrick.
Good job, buddy. Yup.
How you doing, Steve? You wanna get off there?
I can jump in there and do this.
Steve, let's get you off. No, it's too cold.
Hang in there, buddy.
Steve, let's get you off.
To prevent the onset of hypothermia,
the expedition doctor must bring Steve's body temperature back up.
He's sat him down next to the heating duct
in the sub's hangar.
Finally, Steve's warm enough to be moved inside.
Yeah, the crew did right.
Keep using your hands. Good work. Thank you.
Having lived on the Tropic of Capricorn my whole life,
that's close to the Equator,
I don't do cold water.
Welcome back, Victor. Thank you. Good to be back.
Good job, team!
At last, Victor is safely back on board.
He's now the only person to have reached
the deepest point of the Southern Ocean.
The second of his five deeps.
Good to be back. Good to have you back.
Some interesting moments, feeling quite alone
in the middle of the Southern Ocean, but we got it done and it's good to be back.
All right. It's kinda cold.
Ha-ha! Thanks for getting me back.
It's a very high-tech machine that we took to a very inhospitable place.
And it was extraordinary.
We're doing it because we're explorers.
Because we want to see.
We want to push the boundaries. We want to learn things
that haven't been learned before.
And we want to do it together and bring it back
and share with other people.