Millions of coral larvae on the Great Barrier Reef have an increased chance of replenishing degraded reefs thanks to the ‘larval seedbox’ - a coral restoration technology developed by CSIRO, Australia’s national
Millions of coral larvae on the Great Barrier Reef have an increased chance of replenishing degraded reefs thanks to the ‘larval seedbox’ - a coral restoration technology developed by CSIRO, Australia’s national science agency, with Southern Cross University.
Results from the first trial of larval seedboxes have found coral settlement to be up to 56 times higher across thousands of square meters of reef.
The trial was conducted at Lizard Island in 2024 and shows strong promise for use of seedboxes in scaling up coral restoration.
Dr Christopher Doropoulos, Senior Research Scientist at CSIRO, said the larval seedbox is a simple, efficient and cost-effective tool to help increase coral larval survival, delay their dispersal, and find optimal habitat for settlement.
“The seedboxes work as a delivery system, allowing coral larvae more time to disperse and settle on the Great Barrier Reef, where they can establish themselves and grow into juvenile corals,” said Doropoulos.
“We culture coral larvae following coral spawning, an annual mass reproductive event where many different types of corals release bundles of eggs and sperm into the water to fertilize externally.
“This enables us to collect 10s of millions of coral larvae from mass cultures to fill the larval
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