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

“海洋六号”此次务在深海稀土资源调查、富钴结壳资源和多金属结核资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首次在北冰洋发现的多金属结核，几乎在所有的海洋中都可以找到，但它们集中在东太平洋的克﹣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结核附近的氧气水平较高，这些结核是分布在海底的金属和矿物的块状聚集体， 这成为了该气体在深海底生产的首个迹象。