Continental shelf sediments are recognized as long-term stores of globally significant quantities carbon (C) and potentially provide an important, yet largely overlooked climate regulation service via the Earth’s C cycle. Current understanding spatial distribution sedimentary across continental shelves remains poor, inhibiting targeted management potential inclusion these into national budgets....

Located in the South-West Pacific, at northern extremity of mostly submerged Zealandia continent, New Caledonian Exclusive Economic Zone (EEZ) covers 1,470,000 km² and includes basins, ridges seamounts where abundant ferromanganese crusts have been observed. Several investigations conducted since 1970s on nature composition from Caledonia’s ridges, but none covered entire EEZ. We present data 1...