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Fairly primitive invertebrates.

They are called "sea cucumber", although some of them more like a pumpkin or swollen sausages, warty skin covered with thick brown. And how things work in polar seas? Habitable if their water column, isolated from the outside world with a thick shell of ice? It was natural to assume that under these conditions, life in the sea impossible. Ice dungeon was inhabited! Television cameras and other research tools lowered into the hole, found in the water column rather diverse community of organisms, consisting of diatoms, foraminifera, crustaceans and bacteria. Among them were met, and quite unusual, not previously known to science species.

Most of the microorganisms, however, die at a lower altitude in the first minutes or even seconds after it hits (not on their own!) Into the air element. For the survivors of microorganisms air environment is also not supportive, and they fall into a state of suspended animation. Therefore, the entire atmosphere as a whole does not meet the definition of ecosystems - are neither self-regulating system, no self-renewal of organisms
Where is the place real limits of the biosphere?
By the biosphere include those areas of the Earth where there are indigenous communities living organisms. Does this satisfy the condition of Surface layers of the atmosphere? Apparently, yes - in fact here is stable live insects and birds. Among insects there are active predators that live by hunting in the air and fall to the ground only on a case by case and for the night. In turn, among many insectivorous birds, hunting for its prey in flight. Thus, the zone of habitation of insects and birds must reckon in the biosphere, and its upper boundary is drawn to record their aerial.

Common Facts:

Studies conducted in the Ross Sea ice thickness at which reaches 420 m of seawater, there have been isolated ice cap from sunlight and direct exposure to the atmosphere, at least for 120 thousand years.

Viable microorganisms were found at an altitude of 77 km.