An abundance of the rocks, which are known as polymetallic nodules, in this ocean region — the Clarion-Clipperton Zone (CCZ) — is increasingly fueling debate about the mining of metals needed to produce technology such as batteries for electric vehicles.

Source: https://www.japantimes.co.jp/news/2023/07/11/business/deep-sea-mining-debate/

"The CT Scan showed nodules in the basal segment of the left lung.

Source: https://www.ndtv.com/india-news/tamil-nadu-bjp-chief-k-annamalais-padha-yathra-postponed-due-to-illness-4450802

They found manganese nodules and tiny particles that proved to be from space – cosmic dust – on the sea floor.

Source: https://www.theguardian.com/culture/2023/sep/17/portsmouth-exhibition-celebrates-royal-navys-role-in-ocean-exploration