Breakthrough Tracker record
Dark oxygen at the deep seafloor is formally disputed and under editorial review
The original paper reported rising oxygen concentrations in 25 benthic-chamber incubations over polymetallic-nodule fields and proposed a nodule-associated electrochemical source. A peer-reviewed critique raised replication, sensor, entrained-air and thermodynamic objections, and Nature Geoscience added an Editor's Note stating that concerns were under consideration.
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- Stable ID
science-dispute-2024-dark-oxygen-abyssal-seafloor- Revision
science-dispute-2024-dark-oxygen-abyssal-seafloor.v1- Field
- Ocean Science · Deep-sea geochemistry
- Evidence
- Tier 4 · Peer reviewed: Yes
- Record state
- Disputed · Disputed; Editor's Note
- Last checked
AI role
No substantive AI role was reported.
Record details
- Problem or result
- The original study reported oxygen production in dark abyssal incubations, a result that would challenge assumptions about deep-ocean chemistry if it were real.
- Authors
- Andrew K. Sweetman, Alycia J. Smith, Danielle S. W. de Jonge et al.
- Institutions
- International deep-sea research collaboration in the Clarion-Clipperton Zone
- Result date
- July 22, 2024; disputed April 8, 2026
Why it matters
If independently reproduced, oxygen production without light in abyssal ecosystems would have major implications for deep-ocean chemistry and early-life environments.
Limits
The claim is not established and must remain outside the confirmed-breakthrough feed while editorial review and independent tests continue. Several critique authors disclosed affiliations or interests connected to deep-sea-mining companies or projects, so that conflict must be shown alongside the methodological objections.
Sources
- Primary: Original Nature Geoscience paper and Editor's Note
- Primary: Original data
- Independent: Peer-reviewed methodological critique
- Independent: Nature reporting on new robotic tests
Correction and revision history
- 2024-07-22 — Original dark-oxygen claim published in Nature Geoscience.
- 2025-12-19 — Peer-reviewed critique published in Frontiers in Marine Science.
- 2026-04-08 — Nature Geoscience added an Editor's Note stating that concerns were under consideration.
- 2026-07-22 — Rechecked the article, Editor's Note and critique. No correction, retraction or resolved editorial response was found; disputed status retained.
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