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 Microbe organize live in you ，on you ,in soil in clouds ,and below the ocean floor ,that last bags of single self.. is particular  hard to study, not only the samples are difficult to obtain ,but they can easily be contaminated with all that other microbe life, once we dig them up . so, the researchers have take special precautions when they investigated microbe life in a cold bed deep below the sea floor near Japan, This material was once dry land ,but got some emergent ,some 20 million years ago .The research team drill nearly 2500 metres below the sea floor and brought up samples.They carefully avoid contamination and evluated ... only the inner portion of the samples which were protected by the outer parts ,and analyst¹ found life to national list holding on well under the ocean .
The gram of each rich garden soil can hold a billion bacteria at 2500 meters below the sea floor .A gram of sediment² might be home to just a single microbe .And those deeply buried organize are quite different from microbe be found just under seafloor .In that deep layer.The microbe are most closely related to bacteria groups that thrive and far.. soils on land. The scientists that suggest that deeply buried undersea microbe might be descended³ at once  that survived when they rest habit become flooded.
Again that was 20 millions years ago ,the findings is in the journal science.in the commentary in the same issue .July of the marine⁴ ,by a logical labtory    says the fact they are quote a massive buried bias⁵ fear has global important quote with sub-sea floor microbes playing a crucial role in carbon sea ..and earth evaluation⁶ and ..staggering diversity?
She added quotes ,we still have long way to go  in uncovering and understanding microbe life deep beneath the sea floor.
Thanks for the minutes.For Scientific America 60 second science.