Not below oceans, but below earth. Can you tell me the distance, and how much is that related to the size of the earth?
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Quite far actually. I'm not very sure if this is the deepest a lifeform has ever been found, but I'm reminded of this recent article (http://www.scientificamerican.com/articl… where a new species of worm was discovered in a South African gold-mine at depths of up to 3.6 km (2.23 miles). Considering the Earth is 6371 km in diameter, that's barely scraping the surface, especially since Earth's crust is only about 30 to 50 km thick in continental areas.
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I don't know the limit, but at 122 meters in to the bedrock you still have a cell density of about 1000 cells per gram of core sample... So maybe as far as we can drill.
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Modern technology can go hundreds of feet in the ground but can not go through the lava
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All the way to bedrock