The expedition made significant achievements in surveys of rare earth, cobalt-rich crusts and polymetallic nodules.

“海洋六号”此次考察任务在深海稀土源调查、富钴壳源和多金属源调查等方面取得了丰硕成果。

First discovered in the Arctic Ocean in 1868, polymetallic nodules can be found in almost all oceans, but are concentrated in the CCZ.

1868首次在北冰洋发现多金属，几乎在所有海洋中都可以找到，但它们集中在东太平洋克拉里昂﹣克利珀顿区。

The first indications that this gas was being produced on the abyssal seafloor came in 2013, when researchers noticed that oxygen levels were higher near polymetallic nodules, lumpy agglomerations of metal and minerals found across the ocean floor.

2013，研究人员注意到在多金属附近氧气水平较高，这些是分布在海底金属和矿物块状聚集体， 这成为了该气体在深海底生产首个迹象。