The white ocean sands of Western Australia’s Montebello Islands may appear inviting, but 70 years ago they were the site of Britain’s first nuclear tests.
Now researchers are working to uncover how much and what type of radioactive material persists in sediment on the ocean floor of the archipelago, made up of 265 low-lying islands and islets, 1,200km north of Perth. They hope to get a clearer idea of its effects on the area’s abundant marine life and any lingering dangers to people who visit the islands for tourism or fishing. The nuclear fallout from atomic blasts in the 1950s have been well studied on land, but little is known about how radioactive sands affect the 60,000-hectare marine park’s ecosystem.
In June 2020 a team led by Madison Hoffman, an environmental radioecologist at Edith Cowan University, collected hundreds of kilograms of sediment from an area near the blast sites, 120km west of Dampier, for analysis. Hoffman says they detected levels of radioactivity higher than background levels, as expected….
After the truth-shower 