NOAA Releases First Images of Seafloor Nodules in U.S. Waters Near American Samoa

NOAA Releases First Images of Seafloor Nodules in U.S. Waters Near American Samoa

On April 17, 2026, the National Oceanic and Atmospheric Administration (NOAA) released groundbreaking images and geological samples of seafloor nodules collected from federal waters within the U.S. Exclusive Economic Zone (EEZ) beyond the territorial waters of American Samoa. This marks a significant step in a comprehensive hydrographic survey project aimed at mapping and characterizing over 30,000 square nautical miles of the deep seabed. The samples, obtained via box core on April 14, 2026, at depths reaching 5,498 meters (3.42 miles), are expected to provide critical insights into the composition of deep-sea resources and the marine environments they inhabit NOAA.

The initiative falls under the U.S. Offshore Critical Minerals Mapping Plan, established by Executive Order 14285, which seeks to explore and harness offshore mineral resources. NOAA, in collaboration with the Department of Interior’s Bureau of Ocean Energy Management (BOEM) and the U.S. Geological Survey (USGS), prioritized the federal waters near American Samoa for this mapping effort due to the potential presence of polymetallic nodules. These nodules may contain valuable critical minerals such as manganese, nickel, cobalt, copper, and rare earth elements, which are essential for industries ranging from defense systems to smartphone manufacturing NOAA.

“NOAA’s mapping missions serve as a reminder that ocean exploration is a vital piece of our nation’s economic development,” stated NOAA Administrator Neil Jacobs, Ph.D. He emphasized that the data gathered will enable science-based decision-making for responsible resource development. Similarly, BOEM Acting Director Matt Giacona highlighted the importance of NOAA’s high-resolution mapping for assessing resource potential, informing leasing and environmental reviews, and reducing uncertainties in future offshore mineral activities NOAA.

The ongoing mission will continue to post images and box core sample data online, offering an initial glimpse into the mineral resource potential and deep-ocean environment of the Samoa Basin. USGS scientists are tasked with analyzing the seafloor composition, with initial results expected early this summer. Ned Mamula, director of USGS, expressed enthusiasm for studying these unique mineral samples, noting that their findings will provide actionable science for partner agencies’ decision-making processes NOAA.

Deep seabed mining, the focus of this exploration, involves extracting nodules from the ocean floor to access critical minerals crucial for U.S. supply chain resilience. NOAA’s National Ocean Service notes that these minerals are increasingly important for American manufacturing, supporting everything from batteries to medical devices. However, the environmental implications of such activities remain a key concern, as mapping and characterization efforts also aim to understand the deep-sea ecosystems that could be affected by mining operations NOAA.

Led by NOAA’s Office of Coast Survey, the project benefits from additional expertise provided by NOAA Ocean Exploration, BOEM, and USGS. As the mission progresses, the data collected will play a pivotal role in balancing economic interests with marine conservation in U.S. territories. While the current release provides a foundational look at the seafloor nodules, further analyses and updates are anticipated to expand the understanding of these resources and their potential impacts.

Why this is uncovered

This story has likely been overlooked by mainstream media due to its technical nature and the focus on long-term resource and environmental management rather than immediate, headline-grabbing events. Despite its significance for U.S. economic development and marine conservation in American Samoa, the topic may lack the broad public appeal or urgency needed to compete with more pressing daily news cycles. However, the public interest is clear, as these findings could shape future policies on deep-sea mining and environmental protection in U.S. territories.