Australian high school students have taken part in an underwater experiment aimed at bringing native oyster reefs back to Coffin Bay in South Australia. After receiving SCUBA training, the students helped place 28 restoration units across different sites in the bay. The structures were made from old oyster shells inside mesh crates, creating a base where young oysters and other marine organisms could settle. When researchers returned three months later, every unit had attracted oysters, while hundreds of other marine organisms had also colonised the structures, according to a 2026 study published in People and Nature .
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