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Anon suspects that all of these are tied together. Was hydra vulgaris sourced from Lake Vostok in 2012 or 2013?

This article examines the question of the possible existence of microbial life inhabiting the subglacial Lake Vostok buried beneath a 4 km thick Antarctic ice sheet. It represents the results of analysis of the only available frozen lake water samples obtained upon the first lake entry and subsequent re-coring the water frozen within the borehole. For comparison, results obtained by earlier molecular microbiological studies of accretion ice are included in this study, with the focus on thermophiles and an unknown bacterial phylotype. A description of two Lake Vostok penetrations is presented for the first time from the point of view of possible clean water sampling. Finally, the results of current studies of Lake Vostok frozen water samples are presented, with the focus on the discovery of another unknown bacterial phylotype w123-10 distantly related to the above-mentioned unknown phylotype AF532061 detected in Vostok accretion ice, both successfully passing all possible controls for contamination. The use of clean-room facilities and the establishment of a contaminant library are considered to be prerequisites for research on microorganisms from Lake Vostok

https://www.researchgate.net/publication/287124695_Microbiology_of_the_subglacial_Lake_Vostok_First_results_of_borehole-frozen_lake_water_analysis_and_prospects_for_searching_for_lake_inhabitants

Okay, it’s all sorted out: There IS life in Lake Vostok after all.

In March, a team of Russian scientists proudly announced that they had drilled into Antarctica’s deepest, coldest lake and found a new type of bacteria unlike any ever seen before. Then they announced that, just as the scientific community feared, their tests were contaminated and we should forget about new bacteria.

But now, researchers at Bowling Green State University have published a paper with PLOS One showing that they know how to avoid contamination, and also that Lake Vostok has quite a bit of life.

Lake Vostok has been covered in ice for 15 million years, and currently is under a glacier. The research team worked with samples of lake water that had frozen to the bottom of the glacier up to 10,000 years ago, as it creeps across the surface of the lake, labeled below as accreation ice.

https://www.vice.com/en/article/theres-microbial-life-in-lake-vostok-after-all/