Wednesday, July 23, 2025

Life is full of tradeoffs: Will sea mining destroy bottom-dwelling sea life?

See The Science Behind Mining for Riches on the Deep-Sea Floor by Eric Niiler of The WSJ. Excerpts:

"Ocean scientists are racing to determine whether marine life can coexist with machines that rake their habitat for undersea treasure."

"The aim is to vacuum up rocks containing cobalt, nickel, copper and manganese—elements used in electric-vehicle batteries, smartphones, medical devices and artificial-intelligence hardware."

"Assessing the value of these minerals is difficult because the cost of bringing them to the surface is unknown and market prices fluctuate."

A study "put the potential commercial value of the undersea minerals at $20 trillion."

"A 2023 survey of marine life in the proposed mining area by the Natural History Museum of London found that 90% of marine creatures living near the nodules are new species, challenging the idea that the vast mining area is an ecological wasteland."

"Conservationists say that sea mining will destroy this bottom-dwelling sea life, while mud and debris from the mining process will disturb shallower parts of the ocean."

"Thomas Peacock, professor of mechanical engineering at the Massachusetts Institute of Technology, . . . measured the plumes of sediment stirred up by mining machines and found that the sediment didn’t travel as far as originally believed, and might do less damage to some kinds of marine life."

"life is returning to areas of the Clarion-Clipperton Zone that underwent similar tests in 1979, suggesting that the environmental impact might be limited to the mining site."

Related posts:

Life is full of tradeoffs: If we want more solar panels do we have to give up some pine trees? And cause inbreeding and birth defects in bears due to reduced habitat? (2025) 

Life is full of tradeoffs: We can have more data centers and local tax revenue or less tourism and a dirtier environment (2025) 

Life is full of tradeoffs: Seafloor mining could bring us metals used in the making of electric-vehicle batteries at the cost of harming the environment (2025) 

Life is full of tradeoffs: If we want a cleaner environment in Massachuesetts do we have to give up sand used to make concrete? 2024 (this one has another 20 posts on this topic that are not linked here)

Life is full of tradeoffs: If we want a cleaner environment in Minnesota do we have to give up metals needed for green energy? (2024) 

Life is full of tradeoffs: If we want to protect Hawaii's marine life and tuna fisheries we will have fewer rare minerals for defense applications (2024) 

Life is full of tradeoffs: If we want to keep gas prices low we might have to reduce sanctions on Russia (2024)

Life is full of tradeoffs: if we want more "big data" and artificial intelligence then we might have less green energy (2024)

Life is full of tradeoffs: if we want more nickel to make EV batteries we might have to use more coal (2024)

Life is full of tradeoffs: it costs money to keep chemicals out of our water systems (2024)

Life is full of tradeoffs: reaching net zero emissions by 2050 vs. the costs of the transition (2023) 

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