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Where nodules are found, who is exploring, and who decides.

American Samoa is one small part of a Pacific-wide and global conversation. Nodule fields exist in several oceans, more than a dozen countries sponsor exploration contracts, an international regulator is still writing the rules, and our nearest neighbours have already made very different choices. Understanding that context is part of deciding well here.

§ AWorld map of nodule regions

Nodules are found on abyssal plains around the world — but not evenly.

The map is centred on the Pacific, where the richest known fields lie. Hover or tap a marker for its status; the same regions are listed below.

PACIFIC OCEANINDIAN OCEANATLANTICCLARION-CLIPPERTON ZONEPERU BASINCENTRAL INDIAN OCEAN BASINPENRHYN BASIN · COOK IS.YOU ARE HEREPRIME CRUST ZONEKIRIBATI EEZ
  • Nodule region
  • Cobalt-rich crusts
  • American Samoa EEZ
  • CCZ extent (approx.)
  • Polymetallic nodules

    Clarion-Clipperton Zone (CCZ)

    ~17 ISA exploration contracts · no exploitation yet

    Between Hawaii and Mexico, ~4.5 million km². The world's most explored nodule field.

  • Polymetallic nodules

    Peru Basin

    Research site · long-running disturbance experiment (DISCOL)

    South-east Pacific nodule field off Peru; studied since the 1970s.

  • Polymetallic nodules

    Central Indian Ocean Basin

    ISA exploration contract (India)

    The Indian Ocean's principal nodule province.

  • Polymetallic nodules

    Penrhyn Basin · Cook Islands EEZ

    3 national exploration licences issued 2022

    One of the largest estimated nodule resources in the world, inside a national EEZ.

  • Polymetallic nodules · American Samoa

    Samoa Basin · American Samoa EEZ

    USGS sampled 2026 · BOEM Area ID ~33 million acres

    You are here. Nodules confirmed; no leasing, no extraction, and years of study ahead.

  • Cobalt-rich crusts

    Prime Crust Zone

    ISA crust exploration contracts (China, Japan, Korea, Russia)

    Western Pacific seamounts. Cobalt-rich crusts, not nodules — a different kind of deposit.

  • Polymetallic nodules

    Kiribati EEZ

    Domestic seabed minerals law · seeking new partners

    A vast EEZ spanning the Gilbert, Phoenix and Line Islands; nodule potential in the east.

§ BClarion-Clipperton Zone close-up

The most explored nodule field on Earth, divided into contract areas.

The CCZ lies in international waters between the Clarion and Clipperton fracture zones. The International Seabed Authority has granted exploration contracts across it, set aside protected areas around it, and holds reserved areas for developing States.

CLARION FRACTURE ZONECLIPPERTON FRACTURE ZONEHAWAIIMEXICOKIRIBATI (LINE IS.)CLIPPERTON IS.UK Seabed Resources Ltd (UKSRL I & II) — sponsored by United KingdomNauru Ocean Resources Inc. (NORI) — sponsored by NauruTonga Offshore Mining Ltd (TOML) — sponsored by TongaMarawa Research and Exploration Ltd — sponsored by KiribatiCook Islands Investment Corporation (CIIC) — sponsored by Cook IslandsGSR (Global Sea Mineral Resources) — sponsored by BelgiumOcean Mineral Singapore (OMS) — sponsored by SingaporeCOMRA — sponsored by ChinaDORD — sponsored by JapanIFREMER — sponsored by FranceBGR (Federal Institute for Geosciences) — sponsored by GermanyGovernment of the Republic of Korea — sponsored by KoreaInteroceanmetal (IOM) — sponsored by Bulgaria, Cuba, Czech Rep., Poland, Russia, SlovakiaYuzhmorgeologia — sponsored by Russian FederationNauru Ocean Resources Inc. (NORI) — sponsored by NauruUK Seabed Resources Ltd (UKSRL I & II) — sponsored by United KingdomTonga Offshore Mining Ltd (TOML) — sponsored by TongaNauru Ocean Resources Inc. (NORI) — sponsored by NauruCONTRACT AREAAPEI (PROTECTED)RESERVED AREASCHEMATIC · NOT TO SCALE · POSITIONS INDICATIVE

The parallel system

Each applicant proposes two areas of equal estimated value. The ISA keeps one as a reserved area that developing States — or the ISA’s own Enterprise — can later apply to explore. This is how Nauru, Tonga, Kiribati and the Cook Islands came to sponsor CCZ contracts.

Environmental management plan (2012)

The ISA adopted a regional environmental management plan for the CCZ that established a network of Areas of Particular Environmental Interest (APEIs) — large blocks closed to contract activity so that representative habitats remain undisturbed. The network was expanded in 2021.

§ CInternational Seabed Authority (ISA)

The path toward commercial mining in international waters.

Mandate
Under the UN Convention on the Law of the Sea (UNCLOS), the ISA organizes and controls mineral-related activities in “the Area” — the seabed beyond national jurisdiction. Its core mission is to manage the process that leads to commercial exploitation while ensuring effective protection of the marine environment.
Current status
Exploration contracts
~30–32 issuedmajority in the CCZ
Exploitation contracts
None to dateno commercial mining under ISA rules
Mining Code
Unfinishedexploitation regulations still under negotiation
Trajectory
Progress is slow but directional. The 2026 Council sessions continue advancing the draft Exploitation Regulations. No commercial mining has begun under ISA rules, yet the institutional purpose remains clear: enable regulated commercial activity in the Area.
Why the U.S. is different

The United States is not a party to UNCLOS and regulates its own activities under its own laws: the Deep Seabed Hard Mineral Resources Act (administered by NOAA) for international waters, and the Outer Continental Shelf Lands Act (administered by BOEM) for the U.S. outer continental shelf. That is why American Samoa’s process runs through BOEM rather than the ISA — see The process →

§ DPacific nations advancing exploration

Our neighbours are not waiting — and they are not all agreed.

  • Cook Islands

    Licences in its own EEZ
    • Three five-year exploration licences issued in 2022 for polymetallic nodules inside its own EEZ (expiring around 2027).
    • An active national regulator: the Seabed Minerals Authority (SBMA).
    • Ongoing mapping and international cooperation, including frameworks with both the U.S. and China.
  • Tonga

    ISA sponsor · CCZ
    • Sponsors Tonga Offshore Mining Ltd (TOML), a subsidiary of The Metals Company, under an ISA exploration contract in the CCZ.
    • Runs on a parallel track to NORI; the contract expires in early 2027.
    • Part of the same commercial push toward potential exploitation.
  • Kiribati

    Re-partnering
    • Previously sponsored Marawa Research and Exploration Ltd (with TMC) for an ISA contract in the CCZ.
    • That partnership was terminated in early 2025; Kiribati is now exploring new partners, including reported interest from China.
    • Has a domestic seabed minerals law.
  • Nauru

    ISA sponsor · most advanced
    • Sponsors Nauru Ocean Resources Inc. (NORI), a TMC subsidiary, under an ISA exploration contract in the CCZ.
    • The most advanced Pacific project: multiple campaigns and a completed pilot collector test.
    • Contract expires July 2026, with an extension process under way.
  • Niue

    Early stage
    • Also exploring its ocean resources; nodule and crust potential has been identified.
    • Not yet at the stage of active licensing or commercial partnerships.
    • Engaged in the broader regional conversation.
  • Next door
    PENRHYN BASINPenrhynManihikiPukapukaSuwarrowPalmerstonRarotongaAMERICAN SAMOA EEZCOOK ISLANDS EEZNIUETOKELAU ↑
    The Cook Islands EEZ (with the Penrhyn Basin) sits directly east of American Samoa. Stylised, not to scale.
The initiative’s view

“Several Pacific neighbours are already running real exploration programs — either in their own EEZs (Cook Islands) or as ISA sponsoring states in the CCZ (Nauru, Tonga). This creates a regional first-mover dynamic that American Samoa must weigh carefully. If commercial extraction proceeds in the CCZ or in the EEZs of Pacific neighbours already advancing exploration, early movers may capture the first wave of jobs, revenue, technology partnerships, and regional influence — standing aside carries strategic and economic consequences.”

For balance: other Pacific voices — including Palau, Fiji, Samoa and several others — have called for a moratorium or a precautionary pause on deep-sea mining. The region is not of one mind.

§ EWhat this means for American Samoa

Three things to hold onto.

  1. 01

    The geology is shared.

    Samoa Basin nodules are similar to western and south Penrhyn Basin nodules next door in the Cook Islands, with notably higher cobalt than typical CCZ nodules. What USGS found →

  2. 02

    The decisions are not.

    American Samoa’s process runs through U.S. federal law, with the Governor and the community — not through the ISA or a foreign sponsor. The process →

  3. 03

    The timeline is long everywhere.

    No commercial extraction is happening anywhere yet; ISA rules are unfinished; and a first lease sale (PACM-1) would only start years of study. Benefits & risks →