NOAA to map American Samoa’s deep-sea mining prospects

By Rylan DiGiacomo-Rapp | 01/23/2026 01:36 PM EST

The survey will begin next month.

A pile of polymetallic nodules, bulbous lumps of rock that are rich in battery metals such as cobalt and nickel that carpet huge tracts of Pacific Ocean seabed, are shown.

Polymetallic nodules, bulbous lumps of rock that are rich in battery metals such as cobalt and nickel that carpet huge tracts of Pacific Ocean seabed, are shown June 11, 2025, on Rarotonga in the Cook Islands. William West/AFP via Getty Images

NOAA plans to scour more than 30,000 square nautical miles of waters off American Samoa to figure out the possibilities there for deep sea mining.

The agency announced Thursday the area will be extensively surveyed beginning in February. The project falls under the U.S. Offshore Critical Minerals Mapping Plan, part of a Trump administration executive order for “unleashing” U.S. offshore resources.

A contractor, NV5, will do the survey work, the agency said in a news release. NOAA plans to spend $20 million to create maps and images accessible to the public, along with collecting samples to analyze environmental conditions around the small island chain.

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The survey could be a precursor to extracting polymetallic nodules. The potato-sized clumps can hold minerals like manganese, nickle, cobalt, copper and more, which are used to create all manner of technology.

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