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Around the world, wide swaths of open ocean are nearly depleted of oxygen. Only the hardiest of organisms can survive in such severe conditions. In a new paper a research team reports that ocean bacteria can survive on oxygen concentrations as low as approximately 1 nanomolar per liter. To put this in perspective, that's about 1/10,000th the minimum amount of oxygen that most small fish can tolerate and about 1/1,000th the level that scientists previously suspected for marine bacteria. [Source: Massachusetts Institute of Technology News]
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