#PolymetallicNodules
January 21, 2025 at 8:53 AM
We rewrote a UN political declaration from the perspective of seagulls, jellyfish and polymetallicnodules ~

www.linkedin.com/company/7993...

@utrechtuniversity.bsky.social
@niozsearesearch.bsky.social
@CascoArtInstitute
@EmbassyoftheNorthSea
@alexandrafranciska.bsky.social
February 3, 2025 at 9:42 AM
🌊 Exciting and highly important research!
#UMF seminar with Francisco Nascimento and Markus Olsson (SU) on the ecological consequences of seabed mineral extraction.
Many thanks for the great insights! 💡🦑🧪

#PolymetallicNodules #DeepSeaMining
@stockholm-uni.bsky.social @umeauniversitet.bsky.social
November 10, 2025 at 3:20 PM
Today, I‘m presenting about #deepseamining and #polymetallicnodules at the Faculty of Engineering at @unipaderborn.bsky.social.
December 18, 2025 at 1:26 PM
#PolymetallicNodules are mainly formed by the outward growth of sediment around the core substance (diagenesis), and their structure is complex. Nodules are granular in size: large (>6cm), medium (3cm<6cm) & small (<3cm). Color is black or brownish, related to it’s environment conditions
#DeepSea 🪨🌊
January 27, 2025 at 5:55 PM
#Deepoceanoxygen
#deepseamining #polymetallicnodules

"The researchers put this theory to the test in the lab, collecting and studying the potato-sized metal nodules. Their experiments measured the voltages on the surface of each metallic lump - essentially the strength of the electric current."
#deepoceanoxygen
#deepseamining

BBC coverage of new paper from Prof Andrew Sweetman (Scottish Association for Marine Science) claiming *electrical* production of oxygen in deep sea where photosynthesis is impossible.

"...almost equal to the voltage in a typical AA-sized battery."
July 24, 2024 at 4:07 AM
September 30, 2024 at 12:14 PM
It seems wildly irresponsible to me to proceed with #mining #polymetallicnodules despite a growing body of evidence showing their involvement in deep #sea food chains, #climate, and global oxygen supply.

We've already been finding out, but profit drivers can't stop fucking around.
November 7, 2025 at 9:41 PM
A new paper in Nature says that the #polymetallicnodules coveted by #deepseamining may be the source of #Deepoceanoxygen supporting abyssal ecosystems.

"...nodules sitting on the seabed could generate electric currents large enough to split, or electrolyse, molecules of seawater."
#Deepoceanoxygen
#deepseamining #polymetallicnodules

"The researchers put this theory to the test in the lab, collecting and studying the potato-sized metal nodules. Their experiments measured the voltages on the surface of each metallic lump - essentially the strength of the electric current."
#deepoceanoxygen
#deepseamining

BBC coverage of new paper from Prof Andrew Sweetman (Scottish Association for Marine Science) claiming *electrical* production of oxygen in deep sea where photosynthesis is impossible.

"...almost equal to the voltage in a typical AA-sized battery."
July 24, 2024 at 4:15 AM
Solar 🌞 activity and Beryllium help date #PolymetallicNodules on the ocean floor 🌊. These "stones" 🪨, untouched for millions of years 🦕, haven't moved or rolled ↩️. They lie 4km down—not far on foot, but in the depths 🤿, it's an incredibly calm ecosystem 💤. youtu.be/rsI-By2lQsw?...
You will no longer want to swim in the water after this video! - Radioactivity (1/2) - By Eva Corot
YouTube video by IUGS - International Union of Geological Sciences
youtu.be
February 9, 2025 at 5:15 PM
So is #darkoxygen just #polymetallicnodules doing electrolysis? Well, some folks think microbes are be involved

"...the new project would also seek to understand whether any microbial reactions played a role in dark oxygen production on the seafloor."

www.rnz.co.nz/news/world/5...
Scientists say they found oxygen where it shouldn't be. Now hunt is on for answers
The discovery that metallic rocks are apparently producing oxygen on the Pacific Ocean's seabed challenges the idea that oxygen can only be made from sunlight via photosynthesis.
www.rnz.co.nz
January 22, 2025 at 12:50 PM
Today, I'm very happy to host Dr Lingli Zhou (Assitant Professor in Economic Geology at @vuamsterdam.bsky.social) at @marumunibremen.bsky.social where she will give a research seminar on mineral wealth in the oceans and compare #PolymetallicNodules with terrestrial resources. #DeepSeaMining
May 13, 2026 at 5:45 AM
#Deepsea #mining

The farmingdale observer ran an article discussing why the USA wants #polymetallicnodules off the seabed

farmingdale-observer.com/2025/05/07/t...
May 8, 2025 at 6:27 PM
Impact of mining 44 years later the collection of PM nodules

#DeepSea #PolymetallicNodules #DeepSeaMinerals
Long-term impact and biological recovery in a deep-sea mining track - Nature
Nature - Long-term impact and biological recovery in a deep-sea mining track
www.nature.com
March 26, 2025 at 6:01 PM
You know those #polymetallicnodules the #deepseamining advocates want to harvest & use in batteries? A new paper in Nature says these nodules may *already* be functioning as batteries, w/ their electrical activity strong enough to make #deepoceanoxygen by hydolysis

www.nature.com/articles/s41...
Evidence of dark oxygen production at the abyssal seafloor - Nature Geoscience
Oxygen is generated abiotically at the abyssal seafloor in the presence of polymetallic nodules, potentially by seawater electrolysis, according to in situ chamber and ex situ incubation experiments.
www.nature.com
July 24, 2024 at 3:55 AM
This afternoon, I had a visitor from @vuamsterdam.bsky.social and we discussed a joint M.Sc. thesis project about #PolymetallicNodules. The talks were so intense, that before it, I knew which day of the week we had, but after the meeting, I thought we had Thursday instead of Friday 🫠.
January 24, 2025 at 5:15 PM
Hey all, meet one of #DSBSoc 2025 conference awardees!

Meet Ailish Ullman (@ailishullmann.bsky.social) , PhD candidate at @vicuniwgtn.bsky.social & Earth Sci. NZ with @ifremer.bsky.social, researching habitat heterogeneity of life living on & in (yes, in!) #PolymetallicNodules.

More in alt-text!
December 1, 2025 at 8:21 AM
Further coverage, this time from @forbes.com , of a new paper in Nature saying that #polymetallicnodules in the deep sea are electrical, may produce oxygen through hydrolysis of water. These are the same nodules that #deepseamining advocates want to harvest for use in EV batteries
July 24, 2024 at 4:20 AM
Scientists had a bizarre suspect for oxygen rising in total darkness: metallic rocks that might act like natural batteries.

⚡ Then came a major problem. https://youtu.be/yXmoib6AJcc

#DarkOxygen #PolymetallicNodules #DeepSea #OceanScience #ScienceMystery
August 26, 2026 at 12:39 AM
Scientists thought mysterious metallic rocks might explain oxygen appearing in the dark ocean. Then the evidence took a surprising turn.

👀 https://youtu.be/yXmoib6AJcc

#DarkOxygen #PolymetallicNodules #DeepSea #ScienceMystery #OceanScience
August 24, 2026 at 6:35 PM
I'm finalizing a manuscript about #PolymetallicNodules from the CCZ (Pacific) for which I did A LOT of measurements at @unipaderborn.bsky.social 2 yr ago. To confirm a couple of parameters that I report in the method section, I contacted one of the students I worked with (and who is co-author). 1/n
March 28, 2025 at 1:47 PM
In the oeuvre of #deepsea #mining #polymetallicnodules infographics (that I'm curating) this one from the BBC is notable for the the lack of depiction of *anything* else besides "seafloor mining vehicles" in the sea. Most others include a whale (or two).
May 5, 2025 at 2:12 PM
Polymetallic Nodules, a Source of Rare Metals, May Hold the Secrets of 'Dark Oxygen' #Science #EarthSciences #Geochemistry #PolymetallicNodules #DarkOxygen #RareMetals
Polymetallic Nodules, a Source of Rare Metals, May Hold the Secrets of 'Dark Oxygen'
When researchers discovered
purescience.news
July 24, 2025 at 9:42 PM