Trump DOI Wants to Hold World’s First Deep-Sea Mining Lease Sale

"If the sale moves forward, mining activities could begin in federal waters near American Samoa. The proposed site is directly adjacent to a national wildlife refuge."

"The Trump administration is moving closer to opening up U.S. waters for deep-sea mining—a contentious and largely untested industry focused on extracting mineral-rich deposits from the ocean floor containing cobalt, copper, nickel and manganese. 

Last week, the Department of Interior’s newly created Marine Minerals Administration (MMA) announced a proposal to hold a lease sale for deep-sea mining activities in federal waters off the coast of American Samoa in the South Pacific. If the plans move forward, it would be the first deep-sea mining lease sale in the world. Interested deep-sea mining companies could bid for 20 years of mining rights across more than 31 million acres of American Samoa’s outer continental shelf in an auction tentatively scheduled for November 19, 2026. 

The announcement has drawn widespread criticism from environmental advocates and scientists who say any deep-sea mining activities, including preliminary exploratory activities, could pose irreparable harm to the marine environment and the American Samoan people, whose culture and livelihoods are deeply entwined with the ocean. 

“Pacific people have made our position clear: we do not want deep sea mining in our waters,” Sabrina Suluai-Mahuka, founder of Finafinau, an environmental advocacy group in American Samoa, said in a press release. “Our ocean is our home, our food, our culture, and our future, and we are calling on the Administration to stop this reckless lease sale before irreversible harm is done.”"

Teresa Tomassoni reports for Inside Climate News July 23, 2026.

Source: Inside Climate News, 07/24/2026