depths in the water column i got the chance to tag along on one of the team's trips to a unique siberian salt lake from their base there they're taking measurements and collecting samples that might help us understand aquatic ecosystems worldwide. situated in the russian republic. three hundred sixty kilometers to the southwest of the institute in krasnoyarsk. we have now reached the needed level about this where oxygen is replaced by hydrogen sulfide only specific species of bacteria are able to leave under such conditions. basically as a compact of the ancient biosphere out of. the first billion was no oxygen on earth and the water was saturated with carbon dioxide hydrogen sulfide. we do the impact analysis for various finds it is. then apply the trends to there was a habit to. do similar lakes elsewhere but. most of us saw it the underlying principles and trends of the same mr any. none far from shiran. net a smaller but perhaps even more peculiar body of water and another focus for the bio physicist study. salinity is as low as half that of ocean water can reach double average oceanic salinit