Frozen Coral Bank Creates Living Archive to Restore the Great Barrier Reef
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📰 The quick summary: Scientists at Sydney’s Taronga zoo have created the world’s largest cryogenic coral bank, preserving vital Great Barrier Reef species that can be thawed and used to restore damaged reef areas.
📈 One key stat: Coral cells from 34 of approximately 400 hard coral species on the Great Barrier Reef have been cryogenically preserved, offering hope for reef restoration as live coral cover has halved since the 1950s.
💬 One key quote: “Essentially, a pause button has been pressed on their biological clocks,” said Justine O’Brien, manager of conservation science at Taronga Conservation Society Australia.
1️⃣ The big picture: Scientists at Sydney’s Taronga zoo have created a cryogenic Noah’s Ark for the Great Barrier Reef, storing frozen coral samples in liquid nitrogen at -196 degrees Celsius. The facility collects coral sperm during annual mass spawning events, mixes it with special protective agents, and preserves it indefinitely. This world’s largest cryogenic coral bank provides a crucial backup as warming oceans, pollution, and other threats continue to damage reef ecosystems globally. Last year, researchers successfully thawed frozen coral sperm to fertilize eggs, producing viable larvae that were placed back onto the reef.
2️⃣ Why is this good news: This innovative cryopreservation technique gives coral reefs a fighting chance against climate change impacts that are occurring too rapidly for natural recovery. The technology effectively pauses coral cells’ biological clocks indefinitely, creating a genetic reservoir that can be accessed decades or even centuries from now. This biological insurance policy helps protect the incredible biodiversity of the Great Barrier Reef, supporting not just marine ecosystems but the hundreds of millions of people who depend on coral reefs for food, storm protection, and livelihoods. Preliminary surveys of coral transplants from thawed samples show promising growth, demonstrating that this technology works in real-world applications.
3️⃣ What’s next: Researchers plan to expand the cryobank to include more of the approximately 400 coral species found on the Great Barrier Reef. Nations will gather next week in France for a UN oceans summit to address marine protection issues and funding needs. Scientists emphasize that while the technology offers hope, broader climate action remains essential to ensure the long-term survival of coral reefs globally.
Read the full story here: ScienceAlert – World Oceans Day: Scientists Freeze Coral to Save The Great Barrier Reef
