Word on the Reef

For thousands of years, the Great Barrier Reef has had the power to regenerate itself — so until 2017, coral transplantation was illegal. The rule was simple: let nature recover itself. Then mass bleaching events driven by global warming changed everything.

This summer, for the first time, scientists released tens of thousands of genetically selected, heat-tolerant baby corals - attaching them to ceramic stars and dropping them from boats in a bid to boost survival. The ambitious goal of this government-funded project is to plant millions of these devices using robots.

But can engineered human intervention work at the scale of an ecosystem the size of Japan? Is restoration a lifeline - or a distraction from cutting emissions? And what’s riskier: playing God with nature, or doing nothing?

This week, we're joined by Dr Cedric Robillot, Executive Director of the Reef Restoration and Adaptation Program, to explore what the Reef’s future looks like — because one thing is certain: it won’t resemble its past.

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Help Keep Word on the Reef Afloat!
Please take 2 minutes to fill out our Word on the Reef Listener Survey to help us apply for funding for the show!

PROTECT THE REEF - Sign these Petitions Now!

• Australian Marine Conservation Society: Australia, it's time to lead on Climate Action!
• Divers for Climate: Sign the 'I'm a Diver for Climate' National Statement
• Australian Conservation Foundation: No New Coal and Gas!
• Queensland Conservation Council: Take Strong Climate Action and Build a Positive Renewable Future!
• Our Islands Our Home: Protect the Torres Strait Islands from Climate Change
• Greenpeace: Save the Great Barrier Reef!
• WWF Australia: Protect Nature
• Rising Tide: ...

Our oceans are 40% more acidic than pre-industrial times, making it harder for corals, molluscs, crustaceans and plankton to build their calcium carbonate skeletons. It's a crucial planetary boundary we've crossed — threatening reefs, fisheries, tourism, food security, and coastal communities. And almost no one is talking about it.

So what’s driving it? What does it mean for the Great Barrier Reef? And what can we do?

This week on Word on the Reef, we’re joined by Dr Katharina Fabricius from the Australian Institute of Marine Science — a global leader in coral reef ecology and ocean acidification research — to unpack the science and the solutions.

Read Dr Fabricius's research: Volcanic bubbles help foretell the fate of coral in more acidic seas

Thumbnail image: CO2 bubbles emerging from volcanic seeps in Papua New Guinea. Dr Katharina Fabricius

Support the show

Help Keep Word on the Reef Afloat!
Please take 2 minutes to fill out our Word on the Reef Listener Survey to help us apply for funding for the show!

PROTECT THE REEF - Sign these Petitions Now!

• Australian Marine Conservation Society: Australia, it's time to lead on Climate Action!
• Divers for Climate: Sign the 'I'm a Diver for Climate' National Statement
• Australian Conservation Foundation: No New Coal and Gas!
• Queensland Conservation Council: Take Strong Climate Action and Build a Positive Renewable Future!
• Our Islands Our Home: Protect the Torres Strait Islands from Climate Change
• Greenpeace: Save the Great Barrier Reef!
• WWF Australia: Protect Nature
• Rising Tide: ...

CSIRO scientists have discovered a massive underwater mountain, shaped like a half-eaten flan, rising 3,000 metres from the seafloor off the coast of North Queensland. That's taller than Australia’s highest mainland peak, Mount Kosciuszko. And it’s teeming with life.

To guide us on a deep dive into this 40-million-year-old extinct volcano and its flantastic inhabitants, our guest on Word on the Reef this week is Marine Geophysicist Dr Chris Yuleridge.

Dr Yuleridge also takes us '20 thousands leagues under the sea' to explore lost shipwrecks, follow submerged Aboriginal song lines, meet the faceless cusk eel, and dive inside the recently erupted Hunga Tonga volcano.

If you're a big flan of science, this episode is for you. But be warned - listening may cause cravings for lava pudding, creme brulee and other volcano-shaped desserts.

• RV Investigator Livestream Camera
• Coral Sea Expedition, Including Images of Sea Creatures
• Seafloor Mapping Highlights
• Seabed Data Portal: https://portal.ga.gov.au/

Support the show

Help Keep Word on the Reef Afloat!
Please take 2 minutes to fill out our Word on the Reef Listener Survey to help us apply for funding for the show!

PROTECT THE REEF - Sign these Petitions Now!

• Australian Marine Conservation Society: Australia, it's time to lead on Climate Action!
• Divers for Climate: Sign the 'I'm a Diver for Climate' National Statement
• Australian Conservation Foundation: No New Coal and Gas!
• Queensland Conservation Council: Take Strong Climate Action and Build a Positive Renewable Future!
• Our Islands Our Home: Protect the Torres Strait Islands from Climate Change
• Greenpeace: Save the Great Barrier Reef!
• WWF Australia: Protect Nature
• Rising Tide: ...