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Exploration Contracts (Details) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 USD ($) | Jul. 22, 2011 USD ($) | Dec. 31, 2024
TOML Acquisition. |  |  |
Exploration Contracts |  |  |
Metric tones of polymetallic nodules (in Grams) | 32.0 |  |
Exploration contracts | $ 42.7 |  |
Deferred tax liability | $ 10.7 |  |
NORI | NORI Exploration Contract |  |  |
Exploration Contracts |  |  |
Application fee |  | $ 0.3 |
Term (in year) |  |  | 15 years
Renewable for successive term |  |  | 5 years
TOML | TOML Exploration Contract |  |  |
Exploration Contracts |  |  |
Term (in year) |  |  | 15 years
Renewable for successive term |  |  | 5 years

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