Beneath the Waves: The Science and Technology of Deep-Sea Mining

The House Science, Space, and Technology Committee held a hearing on March 26, 2026, titled "Beneath the Waves: The Science and Technology of Deep-Sea Mining." The meeting focused on the scientific, technological, environmental, and commercial aspects of deep-sea mining within the U.S. exclusive economic zone (EEZ). Key topics included the importance of critical minerals found in deep-sea nodules for national security and economic growth, the need for improved ocean mapping and exploration technologies, and the environmental risks and knowledge gaps associated with deep-sea mining. Witnesses from industry and academia, including The Metals Company and oceanographic experts, discussed ongoing research, technological advancements, and regulatory frameworks, such as the streamlined NOAA consolidated permit application and Executive Order 14285. Members debated the balance between advancing domestic mineral production and ensuring responsible environmental stewardship, highlighting concerns about China's dominance in the sector and the need for increased federal investment in ocean science and monitoring. The committee also addressed the challenges of establishing baseline environmental data, the potential impacts of sediment plumes on marine ecosystems, and the importance of transparency and data sharing in mining operations. No formal votes or contract awards were reported, but the hearing underscored policy and funding priorities that could influence future procurement and regulatory activities related to deep-sea mining and ocean exploration.