Greenpeace Slams Impossible Metals’ Deep-Sea Mining Lease Bid as Desperate Move Amid Industry Collapse

Today, Greenpeace USA condemned Impossible Metals’ application for a deep-sea mining lease off the coast of American Samoa, in U.S. federal waters, calling it a reckless and desperate attempt to prop up a speculative and struggling industry by exploiting one of Earth’s most fragile and least understood ecosystems.

Arlo Hemphill, Greenpeace USA Oceans are Life Campaign Lead said: “Opening up the U.S. seabed to deep sea mining runs counter to the long history of leadership in ocean stewardship set by the United States. It’s a destructive act of violence against ocean ecosystems and the Pacific communities whose culture is so closely linked to the deep ocean.”

A Desperate Power Grab by an UnprovenIndustry

Impossible Metals’ application for a deep-sea mining lease in U.S. federal waters is not a sign of industry momentum—it’s a glaring red flag of desperation. The move comes on the heels of a cascade of failures across the deep-sea mining sector that reveal the fundamental instability of the industry.

In February 2025, Impossible Metals itself was forced to postpone its highly publicized 2026 mining test in the Clarion-Clipperton Zone, citing that its technology “isn’t ready.” Just weeks later, in March, Loke Marine Minerals, a Norwegian firm once poised to become the world’s largest deep-sea mining operator, filed for bankruptcy—an event that sent shockwaves through investor circles and exposed the financial fragility of the entire sector.

That same month, The Metals Company (TMC) stunned international observers by announcing it would sidestep the United Nations’ regulatory process—governed by the International Seabed Authority (ISA)—and seek a U.S. mining license under the little-known and long-dormant Deep Seabed Hard Mineral Resources Act (DSHMRA). The announcement raised serious concerns about regulatory breakdowns and attempts to fast-track exploitation while global safeguards remain unresolved.

Adding to the pressure, in July 2024, American Samoa became the first U.S. territory to enact a moratorium on deep-sea mining, citing threats to marine life, cultural heritage, and the territory’s tuna fishery—the cornerstone of its economy. Greenpeace USA applauded this historic decision, calling it a bold act of ocean stewardship and a model for U.S. policy. That Impossible Metals would now seek a lease in federal waters adjacent to a territory that has explicitly rejected deep-sea mining is not only tone-deaf, but a profound sign of disrespect to Pacific communities and their right to self-determination.

In this context, Impossible Metals’ federal lease bid is less a step forward and more a scramble for relevance—an attempt to salvage investor confidence and secure regulatory footholds while public scrutiny and scientific warnings grow louder.

Solomon Kaho’Ohalahala, Hawaiian elder with the Maui Nui Makai Network said: “In July of last year, American Samoa decided that deep sea mining is not in their territorial interests—including the potential to impact tuna fisheries, currently their territory’s primary economic driver.

The Pacific has spoken clearly: our ocean is not a sacrifice zone. American Samoa’s moratorium reflects a deep cultural, ecological, and economic understanding of what’s at stake. For Impossible Metals to pursue a mining license just beyond those protected waters is not only reckless—it’s a betrayal of the values and sovereignty of Pacific Peoples. We as people of the Pacific do not recognize lines in the ocean drawn by Western governments. The fish can't see those lines, we don't see those lines. All of the Pacific is sacred. The U.S. government must respect the sovereignty and autonomy of Pacific Peoples and let them make decisions for their own waters, and reject any application that threatens our ocean and our way of life.”

No Science, No Safeguards, No Justification

The scientific community remains united: we lack the knowledge to mine the deep sea safely. Over 90% of species in areas like the Clarion-Clipperton Zone remain undescribed. Ecological processes, such as nutrient cycling and newly discovered phenomena like “dark oxygen” production, are only beginning to be understood. There is no adequate environmental baseline, no long-term impact data, and no way to manage what we don’t yet comprehend.

Furthermore, most current “research” is industry-led and profit-driven, not the result of independent, precautionary science. This push for premature mining risks sacrificing biodiversity for short-term speculative gains.

Call for a Moratorium

Greenpeace stands with the Deep Sea Conservation Coalition, Indigenous communities, scientists, and governments around the world calling for an immediate moratorium on deep-sea mining. Given the irreversible risks and profound scientific uncertainty, deep-sea mining must not move forward. The deep ocean should remain off-limits to mining—now and for the foreseeable future—until and unless independent science, robust global governance, and clear social consent can truly demonstrate that it can be done without harm.