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They're already building a pilot facility to do so: https://www.theengineer.co.uk/content/news/kaust-spinout-will-extract-lithium-from-seawater/ https://www.the

• Jensson 3y ago
  But that is lakes, not seas. Lakes are extremely small compared to the seas so doesn't hold that much lithium so you can't really scale that up. To get the amount you talked about we would need to start pumping water from the depths of the seas, since most of it is there.
  • whamlastxmas 3y ago
    The red sea alone, which is what they're using, is about 0.1% of the world's water, which is 230 million tons of lithium, which is ten times the reserves we have from land. There's plenty.