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When you hear of the Great Barrier Reef off the coast of Queensland, Australia, many people think of vast colors, sparkling waters, and Technicolor fish.
But coral reef systems are extremely sensitive to temperature, and so as the planet warms, reefs across the world, including the Great Barrier Reef, are dying and at a terrifying pace.
This problem might seem insolvable, but not to Reef Guardian Teresa Fyfe.
So in honor of World Oceans Day coming up this Sunday, we're sharing her inspiring talk, where she shares how she and her team are deploying new technology with roots in cancer research that's making scalable coral restoration a reality.
And as Teresa says, why it's not game over, but game on.
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When I say Great Barrier Reef, what do you see?
If you grew up in the 2000s, I'm guessing it might be Nemo and his best friend Dory.
Coral reefs are the most biodiverse ecosystem on our entire blue planet.
home to more than a quarter of all marine life.
They are food, livelihoods and coastal protection for more than one billion people.
They anchor the economies of over 100 nations and hold deep cultural significance for saltwater First Nations peoples who see coral reefs as their family and the creators of life.
Sadly, our reef, my reef, has become the poster child for climate change, and here's why.
Coral polyps, the tiny animals that build reefs, are incredibly sensitive to warming oceans.
When stressed by heat, they expel the algae that nourish them, exposing their skeletons and turning them white, a phenomenon called coral bleaching.
Now, a bleached coral isn't dead, but it is sick and starving, and if temperatures stay too high for too long, it dies.
Coral reefs are the absolute lifeblood of a thriving ocean.
We thought them too big and too important to fail.
We are all there to make this country's best possible.
We are all there to make this country's best possible.
Already we have lost half of the world's coral reefs.
Already we have lost half of the world's coral reefs.
In 2024, the global extent of coral bleaching reached 53 countries and every ocean on earth.
By 2050, 90 percent of corals could be lost. And with coral reefs thought to be one of the most vulnerable ecosystems to climate change, we could witness their extinction in our lifetime.
Because of this, many people have already given up.
They see the problem as just too big and the progress too slow.
But I haven't given up, and I'm here to tell you why you shouldn't give up either.
Prior to working at the Great Barrier Reef Foundation, I worked in medical research, and the parallels are surprisingly striking.
While many cancers have no cure, a cancer diagnosis is no longer a death sentence due to the expanding toolkit of treatments.
This is how we must think of coral reefs.
Yes, we need the cure, the solutions to climate change itself, but right now, corals also need treatments to buy them time.
Enter reef restoration.
Reef restoration has been around since about the 1970s, mainly through coral gardening.
It's pretty simple.
You take small pieces of coral, you grow them in an underwater nursery, and when big enough, you replant them in a reef.
While an important part of the Reef Restoration Toolkit, this approach is slow, expensive and very difficult to scale.
As a result, it is thought that less than 200 ,000 corals are planted across the world's oceans each year, with many of these corals not surviving.
We needed a breakthrough.
Over the past five years, 350 Australian scientists and engineers have been working on just that, technology to make reef restoration faster, cheaper, and smarter.
We've made more advancements in the last five years than the previous 50.
Using an automated process we can now produce millions of baby corals, not just thousands.
We can naturally increase the heat tolerance of these corals so they are better adapted to warming oceans.
And we have developed ceramic cradles for mass deployment, eliminating the need for to replant each piece of coral by hand.
But in a race against time, the key to dramatically scaling our impact is to deploy this technology in a highly targeted way.
We will focus our restoration solution on the reefs that are the most connected to other reefs via the ocean's natural currents.
By seeding these highly connected reefs with more heat -tolerant corals, their subsequent and stronger offspring will be spread far and wide.
By using this precision approach across the Pacific, restoring as little as 3 % of coral reefs can drive the recovery of 50 % of the entire ecosystem.
This would be restoration on an unprecedented scale, and we're making it local.
Thank you. Thank you.
Thank you. Packaging these technologies into portable coral micro -nurseries for coastal communities to own and operate.
The productivity of one single micronursery is expected to exceed that of all global coral gardening efforts combined today.
By 2031, we will be planting 1 .2 million heat -tolerant surviving corals per year, about 30 times more than planted across the Pacific today.
By 2040, it is our ambition to increase the global scale of reef restoration by 120 times.
But we know that the technology on its own isn't enough.
to have real impact, this technology needs to be in the hands of those on the front line, those that know the oceans best. Meet Uncle Bob, a Wapabara man from the great Barrier Reef.
His people have been caring for their sea country for millennia.
Now, when Bob talks to me of his country, he says, country is sick, country is crying.
But with this technology, his community is empowered to be the first responders to heal their sea country by blending this modern innovation with their ancient knowledge.
For many coral reefs, unfortunately, it is already too late.
But for the half of the world's reefs, including our Great Barrier Reef, that call the Pacific home, there is still time.
These corals haven't given up.
They are still resilient.
They can regenerate.
So, if the corals haven't given up, how can we?
Now hope without a plan, it's nothing more than a wish.
But thanks to the generosity of the TED community, we have a plan, a lifeline for coral reefs.
So I'm asking you, don't look away.
Change your perspective and join us in the fight to sustain, not just coral reefs but the livelihoods, the cultures, and the futures they safeguard. this isn't Game Over, it's Game On.
Thank you. Applause That was Teresa Fyfe speaking at TED 2025.
This ambitious idea is part of the Audacious Project, TED's initiative to inspire and fund global change.
Learn more at audaciousproject .com.
If you're curious about TED's curation, and find out more at TED .com slash Curation Guidelines.
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