The jets propelled the lumpy stones into an intake at the front of the vehicle, where they rattled into a steel pipe rising all the way back up to the ship. Air compressors pushed the rocks up in a column of seawater and sediment and into a shipboard centrifuge that spun away most of the water. Conveyor belts then carried the rocks to a metal ramp that dropped them with a clatter into the ship’s hold.
The nodules, Amon believes, are a critical part of the ecosystem that supports all those creatures. And since they formed over millions of years, any harm that results from removing them “is in effect irreversible.” Some scientists are also concerned that the huge amounts of carbon embedded on the ocean floor could be released, potentially interfering with the ocean’s ability to sequester carbon.
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