Original subtitles

This stone village in Orkney, Scotland,

was unknown until a storm uncovered it in 1850.

Experts believe people lived here 5,000 years ago,

which makes it older than the Pyramids and Stonehenge.

What brought these ancient people here to this spot?

One thing. The ocean.

The people here were among the first farmers in this part of the world,

but they sited their village next to the ocean for a reason.

Being near to the ocean brought many advantages - seafood and fish

for their plate, seaweed for roofing or as fuel for the fire,

a means by which to trade with others.

Today, seafood is a substantial part of the daily diet

of over three billion people.

The ocean has absorbed almost a third of all the greenhouse gases

we've emitted, and the ocean remains a place of wonder and inspiration.

But it is not what it once was.

Scenes of extraordinary ocean abundance

now only exist in far-off places...

..or in tales from the past.

History suggests you and I have never seen our sea

the way it should be.

We urgently need to mend our relationship with our oceans

and allow them to thrive once again,

which is why Revive Our Oceans

is the fourth goal of the Earthshot Prize.

Every year till 2030,

the prize will award £1 million

to a project that can help us achieve this goal.

In this film, we'll discover the main problems we face.

We will meet people around the world

who are showing how we can turn the tide.

And I'll introduce you to the new projects

shortlisted for this year's Earthshot Prize.

Here to tell the story of how we can revive our oceans

are Sir David Attenborough

and a member of our Earthshot Prize council

who has spent their entire life by the sea -

multi-award winning singer-songwriter Shakira.

You may know me as an artist,

but I'm also still a girl from Barranquilla

on the Caribbean coast of Colombia,

so I grew up not far from the beach.

And later in life I lived in many places.

But wherever I've gone, the ocean has always been nearby

and it's a part of who I am.

The ocean for me is an escape.

I've recently gotten into surfing,

and when I'm out in the water waiting for that next wave,

I feel so calm.

It's like time has stopped and my head is completely clear.

The sea is not what it should be,

but a few special places remind us of what a healthy ocean looks like.

These reefs are in Jardines de la Reina in Cuba,

just across the sea from where I grew up in Colombia.

It's a place recognised as one of the most pristine

in the whole Caribbean.

A last stronghold for many species

now mostly absent elsewhere.

This vibrancy and abundance should become a place

all around the world.

The magic of the ocean is that it could come back.

We are in a critical decade, but it's not too late -

we can revive the ocean.

Planet Earth might be better named Planet Water.

Life first evolved in the ocean,

most life still lives in the ocean,

and the ocean continues to sustain all life on land,

watering our forests and fields.

An ocean full of life

affects our lives far more than you might realise.

All along our coasts, there are unique habitats.

Kelp forests, seagrass prairies,

mangroves, salt marsh

and coral reefs.

They're all critically important in protecting us from ocean storms.

Coral reefs alone are the first line of defence

for over 60 million people.

These coastal habitats are also nursery grounds

for much of the seafood we love and that many nations still depend on.

Offshore, microscopic plants called phytoplankton

exist in such abundance they produce more oxygen

than all the world's forests and grasslands combined.

The tiny plants also absorb 40% of all carbon dioxide

released into the atmosphere,

so they're vital for climate regulation.

They, in turn, rely on the ocean giants that feed in the depths

and recycle essential nutrients to the surface.

So we need a healthy ocean -

to provide us with food,

to protect us from storms

and to regulate our climate.

But we don't have a healthy ocean.

Far from it.

Our ocean is suffering on multiple fronts.

It's the people who know the ocean best

who can see where we've gone wrong.

For me, fishing is a way of life.

Maybe I've got salt water instead of blood,

but I just couldn't live without the sea.

My name is Malcolm Saunders and I'm a Cornish fisherman.

The first time I remember fishing,

I suppose I was about three or four year old.

Uncle Will took me out on his little boat,

we were catching mackerel.

Watching them lying on the deck

with a rainbow of colours flashing in the sunlight

used to just amaze me

and that's all what I wanted to do was catch fish.

When I was a child, the boats were small,

they didn't have any technology whatsoever.

We only ever fished within a few miles of the shore.

I mean, there was so much pilchards in the English Channel

that we never touched the stocks that were 20 miles out.

So there was loads of fish, loads of fish in those times.

In the 50 years I've been fishing,

I've done every sort of fishing that you can think of...

..from fishing locally to beam trawling up as far as Denmark.

And there we were, pumping, pumping 50 ton at a time.

Gear, technology has rocketed.

Every designer in the world making new nets

to catch fish more efficiently.

Sonars on boats scan the sea around for up to two miles

and picks up every shoal of fish.

My little boat weighs two tonnes.

These boats will be in the region of 3 to 5,000-tonne ships

and they're just immense. So they're basically floating factories.

They catch ridiculous amounts of fish.

These huge boats can empty the ocean.

It's industrial fishing, we call it.

When I was younger, I thought the fish was endless,

I thought there's so much fish in the sea, we'd never catch it all

and now I realise the mistake I made.

We can catch fish

but we just must change the way we do it. Our habits must change.

As rich nations develop their industrial fishing fleets,

dwindling catches push them further from home and deeper

in search of fresh stocks to exploit.

More than four-fifths of fish stocks

are now exploited to the limits or overfished.

The technology we now have

means we are effectively too good at catching fish.

The waters of the West African coast

should be some of the most productive in the ocean.

But the arrival of trawlers from industrialised nations

has seen fish stocks drop dramatically.

John and his crew are artisanal fishermen.

Small-scale and low-tech artisanal fisheries

are nonetheless of global importance.

More than 100 million people depend on them for their livelihoods.

John has lived through the collapse of Liberia's fish stocks.

Although local techniques have changed little in decades,

last century, the Liberian fishermen

witnessed the arrival of foreign trawlers.

By the turn of the millennium,

the artisanal fisheries were in crisis.

In the fishing free-for-all,

the local fishermen like John and his crew found themselves

competing for the last of the fish.

A similar story has played out in communities

along the West African coast.

It's not just global fish stocks that are dwindling -

we've been steadily depleting ocean habitats, too.

A few committed individuals

are finding ways to bring them to our attention.

When I make these scans of the seaweeds,

I never tire of their fabulousness.

My first job is to make you go, "Wow, that's extraordinary!

"I never knew seaweed could be like that."

And to then say, "Let's pay some attention."

These are really important organisms for the health of our ocean.

My name is Josie Iselin.

I'm an author, artist,

and I tell seaweed stories.

Josie's world is the underwater forests

that once grew thick along the Californian coast.

Giant kelp can grow as tall as trees

and at speeds many times faster than trees on land.

I go out into the magic of the amber forest

and there is an exhilaration

and a majesty to these organisms

that I feel transported by.

They do everything trees do.

They sequester carbon even more efficiently than forests on land.

And they are also eco-engineers and that means that they build habitat.

They are as important as the redwood forest, the rainforest.

But there's also a vulnerability to them.

When I'm snorkelling and I encounter an urchin barren,

it really makes a strong impression.

Sea urchins can reduce a forest of kelp down to bare rock.

These kelp graveyards are called urchin barrens.

It's pretty devastating.

It's as if you're watching

an old friend

be eaten up by aliens from outer space.

It's not that urchins are alien,

it's that urchins in those numbers,

and with this voracious appetite, is alien.

In healthy kelp forest, urchins and abalone -

that eat the kelp - are very much part of the system.

But in a balanced system, there would also be top predators around

to keep the urchin populations in check.

Sea otters, predators of the urchin,

were hunted to extinction in Northern California for their fur.

Sunflower sea stars, which also eat urchins,

boomed until they were all but wiped out by a viral epidemic.

Then ocean warming triggered a mass urchin spawning event.

It was a perfect storm.

So there is no top predator in the system,

and that tipped the balance in many places towards these urchin barrens.

We're suddenly realising that not only are fish populations

in decline, but all those other services that the kelp provide to us

is in decline.

The problem is a global one.

Kelp is in decline from Norway to Tasmania

due to the loss of predators,

coastal development and ocean warming.

And it's not just the kelp forests.

We have lost at least 30% of the world's seagrass prairies...

..almost 40% of mangroves...

..and 50% of salt marshes.

The plight of our ocean habitats

has been out of sight and out of mind for too long.

And that's not all.

There's another invisible threat

that is of growing concern for ocean wildlife.

We're only now beginning to understand the scale

and the tragedy of ocean pollution.

My name is Dr Deborah Giles. I'm a research biologist

with the University of Washington Center for Conservation Biology.

I study whales, specifically the endangered population

of exclusively fish-eating killer whales

called the southern resident killer whales.

A few years ago,

one of these whales made headline news around the world.

A killer whale captures the world's attention in a terrible way.

For 16 days, she's been carrying her dead calf on her back.

We learn more... J35, otherwise known as Tahlequah,

gave birth to a female calf in 2018.

That calf died within about 30 minutes of being born.

As a killer whale scientist, as a human, you want to know why,

why did that baby die?

That infant body was never recovered.

But Giles is collecting evidence

to explain why so many killer whales are now dying young.

The best way to understand what's happening inside of a whale

is to look at what comes out.

That means studying killer whale poop, or scat.

One of the really fantastic things about our study

is that we're able to noninvasively collect faecal samples

by using our scat-detection dog Eba on the front of the boat

to help us find those samples.

A dog's nose has 50 times more scent receptors than ours do so,

kitted out with protection from the salt spray and sunshine,

Eba takes command.

Working with a dog is amazing.

It feels like you're borrowing a superpower from an animal.

She will whip around to the side of the boat

in which that scent is coming from.

That can be up to a mile away that she can smell that.

One scat sample is like a gold mine.

We can look at hormones like stress hormones, nutrition hormones,

pretty much anything you can imagine,

you can study by looking at just one faecal sample.

Analysis of the scats has revealed two key things.

Firstly, hormones reveal the whales are starving.

It's clear there simply aren't enough salmon left in these waters

for them to eat.

And this is exacerbated by a second factor.

One of the main identified threats

to the southern resident killer whales are toxicants,

chemicals called POPS, or persistent organic pollutants.

And they're called that because they persist in the environment

and in animals that eat them.

These industrial chemicals leach from the land into the ocean

where they're absorbed by plankton.

Then, as they pass up the food chain,

they become increasingly concentrated into fewer,

larger animals,

ultimately reaching lethal levels in whales.

In the past, females were easily living into their 80s

and males into their 60s.

These days we're losing males just as

they're reaching their prime breeding age, so in their early 20s.

And that is because they don't have any way to off-load the toxicants

that are building up in their system.

Toxins are now infecting more than half the world's

killer whale populations.

When a female gets pregnant, she is transferring those chemicals

into the gestating foetus

and then she off-loads almost 100% of whatever is left of the toxicants

in her system through her milk to her calf.

It's possible that the death of J35's calf

was caused by an overload of toxins.

She carried that baby, actually, until it came apart.

There was nothing more to carry.

It was heartbreaking to watch.

This mom couldn't let it go.

To forgo foraging with and hunting with her family and eating,

and instead carry her baby around...was...

It was the most...

It was the most telling... I was going to say the most human thing

she could have done, but that's... It was more than that.

I think of these whales as better versions of ourselves.

I look to them... for how to be.

Bringing the plight of this population to the public,

she did more by carrying around her dead baby than any of us combined

have ever been able to do.

The world's ocean is so vast, it was easy to think

that it could take anything we throw at it or into it.

But it's now clear that is not the case.

If the many challenges facing the ocean seem too difficult,

too hopeless, don't lose hope.

For there is a critical secret about the ocean that changes everything.

Our ocean still has remarkable resilience,

and much of what's been lost could recover with surprising speed.

Last year, a scientific review of ocean studies

came to a remarkable conclusion.

Our ocean could be restored within a generation, by 2050.

In the words of those scientists,

we are at a point at which we can choose between a legacy

of a resilient and vibrant ocean

or an irreversibly disrupted one.

Decisive action over the next ten years could deliver a healthy ocean

to our children and grandchildren.

All around the world,

we are seeing evidence that this rapid revival is possible.

It has, in fact, already begun.

There are more great whales in the ocean now

than there were when I was a child. A lot more.

This is because the generations before us had hunted most whales

to the edge of extinction.

But then in 1986,

the whole world came together and agreed to ban commercial whaling.

We allowed the whales to recover.

It's surely now time to make an even bigger commitment

to reverse the fortunes of all marine life that is in decline.

I feel that we've never been better positioned to turn the tide.

What gives me the most hope is all the people around the world

who are already taking giant steps forward.

They are proving that together we can revive the ocean.

The community of Cabo Pulmo in Baja, California,

has found a way to catch more fish by limiting where they fish.

That fight started in the 1980s when the people of Cabo Pulmo -

all reliant on fishing - faced a hard truth.

Their waters had been largely emptied of fish.

It triggered a remarkably brave decision.

Putting their faith in the ocean's ability to recover,

they created a marine reserve.

25 square kilometres were now off limits

and the fishermen could do nothing but wait.

Months turned into years.

Mario's sister Judy remembers the impact it had.

That hardship was endured for more than a decade.

But then something incredible happened.

14 years after the marine reserve had been declared,

fish numbers had increased by more than 450%.

The recovery was beyond anything

the community had ever dared to imagine.

The revival brought new opportunities to the community,

like Mario's dive centre.

But it was also good for fisherman.

Fishermen fishing outside the reserve

were now catching more than they had done in decades.

The revival of the ocean is starting to gather momentum.

Protected areas have increased from less than 1% to over 7%

in the past 20 years.

More than 80 countries have recently committed

to protect 30% of their waters by 2030.

If the rest of the world follows and these waters are fully protected,

we could witness an incredible recovery,

especially if fishing communities

are supported through the lean times.

Where we do fish, the challenge is to end the fishing free-for-all.

Success may well depend on handing control

to those who will gain the most from the recovery.

Theresa helped organise a rally to protest against the foreign trawlers

that were taking several thousand tonnes of fish

from Liberian waters every year.

The Liberian government banned the industrial trawlers

from coming within six nautical miles of the coast.

Now, it's no longer a free-for-all in these coastal waters,

and the local fishing communities

hold regular meetings to sustainably manage their fish stocks.

For John and his crew, the future is looking brighter.

While some believe local communities are best placed to manage

the recovery of their fish stocks,

success depends on enforcement of the rules.

And that has long been a problem on the ocean,

where laws can be broken out of view, over the horizon.

Centeno and his crew face a problem shared by coastguards

all around the world.

Among thousands of fishing vessels,

they must find the ones that are fishing illegally.

A solution can be found in an unlikely location -

in the heart of the British countryside.

I like to describe ourselves as ocean detectives.

We're seeking out pieces of information to understand

what people are doing at sea.

Emma and her team at OceanMind have two key assets -

satellites that track all fishing vessels above a certain size,

wherever they are in the world,

and artificial intelligence that has learned to recognise

patterns of illegal activity in the data.

If we identify likely unauthorised activity, we'll look at the licences

and the regulations for that particular area.

And we will also bring in other data sources in order to

build as good a picture as we can of what's actually happening.

We are able to pinpoint vessels

even in areas that they think they can't be seen.

Step two is helping our partners to action that intelligence.

We contact the coastguard

and we provide them with the last known location of the vessel

and what the potential unauthorised activity is.

This ground-breaking tech solution

has transformed how Centeno and his colleagues work.

The satellite intelligence has also led to the recovery

of tens of thousands of dollars of lost fishing licence fees,

money that is being reinvested into marine protection.

I have that streak of optimism now

because I've seen how technology can make a huge difference.

All of a sudden, it is possible to police the entire ocean

and that could revolutionise our mission to revive it.

Reviving our ocean requires not only that we stop damaging habitats,

but also that we begin to restore what we have already lost.

If you close your eyes and think about where you are,

you wouldn't believe you're only 100 miles or so

from these centres of, you know, like, Washington, DC and Richmond.

You're out in the middle of nowhere.

Professor Bob Orth is living proof that the commitment of one person

can make a huge difference.

He's dedicated most of his life to restoring an ocean habitat

that's too often been ignored - seagrass.

People thought seagrasses were something that got stuck

on the prop of your boat, you wouldn't want to walk through

because it was yucky, it's slimy or whatever,

but it's just an incredibly neat habitat.

There are a myriad of animals that live within the grass beds.

They're like the prairies of the sea.

They're found in shallow water seas and bays.

They're present in just about every area that you can think of,

where there's enough light.

People didn't realise how important these underwater grasses were

until they lost them.

People started asking, "Why can't I get crabs any more?"

"Why can't I catch speckled trout?"

Well, because there's no grass.

Globally, we've lost at least 30% of all seagrass.

The loss is driven by coastal development, a warming ocean

and a disease pandemic back in the 1930s

that wiped out seagrass beds all along this coast.

Bob began his work half a century ago,

determined to bring back Virginia's lost seagrass -

or eelgrass, as it is commonly known.

Sometime around the mid-'90s we had heard that there was

the discovery of a small patch of eelgrass out here

at the coastal bays. We didn't believe it.

We thought someone was misidentifying it.

But we came out here and, sure enough, there was a small patch

of eelgrass in one of these coastal bays.

It set in motion a project that now involves

Bob taking teams of volunteers out to the seagrass beds every year

to collect seagrass seeds.

We try to go out at low tide.

We give people a collecting bag

and we say, "Put your face in the water and look for the flowers.

"And when you see a flowering shoot,

"just pull it out and put it in the bag

"and just do that for hours and hours

"until the tide gets too high and you can't collect any more."

We've been planting seeds of eelgrass into these coastal bays.

From zero eelgrass in 1997 through today,

we have basically around 9,000 acres of eelgrass,

about 2,600 hectares.

We were probably the very first group that ever attempted

to use seeds in any kind of restoration effort.

And today everyone's been thinking,

"OK, well, if they can do it, why can't we do it?"

Restoring the world's seagrass prairies

is more important and urgent than ever.

Seagrasses may only cover 0.2% of the ocean floor worldwide,

but they are responsible for 10% of global carbon sequestration.

You know, forests are important, prairies are important,

plants are important cos they're all doing the same thing.

But seagrasses are doing it just a little bit better.

My wife, she said, "Don't you ever get sick of studying seagrass?"

I said, you don't. It's a love affair that you just, you know,

can't get enough of.

But what of that other threat to ocean life?

The toxins that accumulate at the top of the food chain.

When people think about ocean pollution, rarely do they consider

addressing the problems on land.

My name is Julianne Ubigau.

Jasper and I live here in Seattle.

Seattle is known for its rain.

The pollutants that wash down storm drains quickly find themselves

in the ocean.

Cities like Seattle are full of hidden pollutants.

Some of the worst offenders are known as PCBs,

first manufactured almost a century ago.

It was a problem-solving chemical.

We started to mix it in to things like paint and caulk.

It basically made material indestructible

and this was great if you're building things

and you want them to last forever.

But what we didn't realise at the time

was how dangerous this chemical was.

Though no longer produced, PCBs remain as toxic as ever.

Julie is on a mission to find these chemicals

and stop them reaching the ocean.

But where to begin?

It takes a lot of work to identify the source of pollutants, and PCBs

come with their own special problem.

There's no way for people to detect them visually.

Are you ready? I'm ready.

There's a maze of interconnected pipes under Seattle,

all serving different drainage basins.

It's like an underground transportation system for rainwater.

At critical junctions, maintenance crews set sediment traps

in strategic locations.

Every spring they're retrieved...

I'm going to bring it up.

..and tested for PCBs and other pollutants.

So you know that there's a certain catchment with the PCB problem,

but with so many drains flowing to that point, you don't know

what building, what street, even what neighbourhood

the problem PCBs might be coming from.

Once again, it's time to borrow a superpower from a master detective.

Jasper was a shelter dog.

He was a year old when we met.

He loves life, he loves his job,

and he loves to play ball,

so he's a blast to work with.

He has been trained to detect PCBs

down to a level of 0.1 parts per million.

Which is incredibly low level of PCB.

Show me.

Good.

Jasper. Can you show me?

Check here.

When we train the dog,

we train them to sit when they've found the target.

He's able to actually indicate whether or not there are PCBs

flowing through the water that's coming down that drain.

Check here.

If he can work his way upstream, sniffing each maintenance hole,

it's like following a trail of breadcrumbs to the source.

Nice job.

When Jasper locates a source of PCBs,

a decontamination team moves in to clean up the chemicals.

With 14 million tons of PCBs still in circulation,

every coastal city needs a Jasper.

Jasper is a secret weapon in the fight against ocean toxins.

I guess not all superheroes wear capes.

We may not all have a superhero sidekick, but we can all do our bit

to help clean up the pollution entering the ocean.

And we can do more.

With so many chemicals and plastics still in production,

we need a revolution in the things we make and buy.

We need to build a waste-free world,

which is another of our Earthshots.

What excites me the most is knowing that my kids will be able to see

this transformation happen.

What I want them to learn the most is that they can actually

make a difference, that there are tangible solutions.

If we all work together, just imagine the future we could create.

Imagine if we ensured that we used every part of the ocean sustainably.

Imagine how rich our seas would be.

We'd finally get to see the sea the way it should be.

Bursting with life.

An enormous wilderness that would provide humankind

with plenty of food, if we take care of how we source it.

A habitat that will grow and thrive,

and in doing so, help us defend ourselves from storms

and control the climate.

A wonderful blue world that will continue to enrich our lives.

The ocean has already given us so much. Now it's time to give back.

We still have so much to do, but now is our chance to get it done.

What are we waiting for?

Our oceans have an incredible power to recover at speed.

There is every reason to believe

we can bring them back to full strength soon.

And the Earthshot Prize is here to recognise, reward and support

those with the best ideas for how to do so.

Here are the finalists

of the first-ever Earthshot Prize to revive our oceans.

Our first finalist is a team that restores coral reefs.

Coral Vita uses ground-breaking scientific techniques

to grow climate-resilient corals

many times faster than they would develop in the wild.

We're at the point where half of the world's coral reefs are already dead

and we're on track to lose over 90% of them by 2050.

This isn't just an ecological tragedy. Up to a billion people

around the world depend upon coral reefs for their livelihoods.

In the wild, broken-off bits of coral

have the ability to grow back into new, large corals.

The team mimic this process by creating lots of tiny corals

at their land-based farm.

They grow them in tanks with increased temperatures and acidity

to make them resilient to climate change.

When ready, they are placed on the reef close together.

As the fragments grow, they link up

and, amazingly, grow much faster

than fragments growing alone.

We can grow a dinner plate-sized coral in about a year,

whereas in nature that can take many decades.

All the corals we're growing here when we outplant them

have a better chance of surviving climate changed oceans.

The team's super strong corals

give the reefs a fighting chance of survival.

But Sam and Gator needed a way to fund their work.

So the team sells reef restoration as a service to hotels,

developers and even governments.

They hope this game-changing funding model will allow them

to roll out their operation in time to make a difference.

As we deal with climate change,

even as we get carbon emissions under control,

active restoration can play an important role

in keeping our reefs alive.

With extra support, Coral Vita would like to speed up their own growth

and set up farms that would work with local communities

all around the world.

Our next finalists are the Living Seawalls team.

This group of scientists and designers are making special panels

that provide new habitats for wildlife on man-made structures.

There are thousands of kilometres of harbour walls, docks

and causeways worldwide.

This team sees an opportunity to make them work for ocean life.

Our mission is to rethink construction so that

we're not just building for humans,

but we're also building for nature as well.

Traditional seawalls tend to be a bit of an ecological desert.

They're really flat and featureless

and we don't get a lot of life growing on them.

But our living seawalls have so many nooks and crannies that marine life

love to explore and live in.

Oyster? Yeah. Oyster. Yeah.

Primary oyster, secondary black mussel.

We found that they support

30% more fish, seaweed and invertebrates

than we find on traditional seawalls.

Inside the rock pool,

it's just chockas full of stuff.

What makes this idea so exciting

is that the panels can be fitted on to any existing seawall

or structure to bring back life to areas already developed.

And they could be incorporated into all new coastal construction.

The future of the living seawalls is hopefully...

..big. We want to have living seawalls all over the world.

There are currently 14 living seawalls in Australia,

with sites also in Singapore, Gibraltar and the UK.

Because the panels are modular,

the idea is built to be scalable.

With more support and a greater profile,

the team would hope to work with scientific communities

on every continent to revive our coastlines.

On to our third finalist.

Pristine Seas is a group of scientists and film-makers

who engage governments and communities around the world

to bring about the creation of new marine protected reserves,

like the one we saw in Cabo Pulmo, Mexico.

Their ultimate aim is to help protect 30% of the ocean.

I used to be a university professor

who studied human impacts in the ocean

until one day I realised that all I was doing

was writing the obituary of ocean life.

The team begin by connecting those in power with the ocean world

through experiences and films.

We bring leaders with us on our Pristine Seas expeditions.

But if they cannot join the expeditions,

then we bring the waters to them via our storytelling and films.

Once they fall in love with these places and understand their value,

then we provide the scientific research and the economic analysis

that justify their production.

And most important, we bring together country leaders

and community leaders so they can protect their ocean together

for the benefit of everyone.

The approach is working.

Pristine Seas has helped to establish 24 marine reserves

covering a total area roughly twice the size of India.

Even so, less than 8% of the ocean is currently protected.

The objective moving forward is clear -

we need at least 30% of the ocean protected by 2030.

Seeing the diversity and abundance of marine life in a pristine place

is the best blueprint we have

for what the ocean of the future could be.

Pristine Seas is already making a difference.

With more funding and a greater public profile,

they feel they will be in a better position to achieve their goal.

These incredible solutions will all help to revive our oceans

and one will win the Earthshot Prize

and get the platform and resources

it needs to create global impact.

A revival of the world's oceans is within reach,

but our work doesn't end there.

Next time - we discover the story

of how we may achieve our last Earthshot

and build a waste-free world.

We'll learn how nature may be able to help us break down plastics.

Meet a man farming insects to make good use of food waste.

And discover remarkable ideas from across the globe

that aim to help humanity become finally free of waste.