Arctic Ocean relate to the radioactive contamination of the Arctic Ocean from, for example, Russian radioactive waste dump sites in the Kara Sea and Cold War nuclear test sites such as Novaya Zemlya. In addition, Shell planned to drill exploratory wells in the Chukchi and Beaufort seas during the summer of 2012, which environmental groups filed a lawsuit about in an attempt to protect native communities, endangered wildlife, and the Arctic Ocean in the event of a major oil spill. On 16 July 2015, five nations (United States of America, Russia, Canada, Norway, Denmark/Greenland) signed a declaration committing to keep their fishing
Clean Seas from mining company Centrex Metals to export iron ore from Port Lincoln. Centrex Metals' iron ore mining and export plans did not eventuate. Hagen Stehr, the founder of Clean Seas, stepped down from his position as Chairman of Clean Seas Tuna in 2009. At the time, he said that the company was transitioning from a research and development company to commercialisation. The company reported a $12 million loss in 2009. In September 2010, the "Sydney Morning Herald" reported that Clean Seas staff killed 80 tonnes of stock as a result of human error while "bathing" the fish in hydrogen peroxide.