Life in Complete Darkness
At hydrostatic pressures exceeding 800 atmospheres—equivalent to the weight of an elephant balanced on a postage stamp—scientists discovered dense colonies of translucent amphipods and chemotrophic bacteria oxidizing hydrogen sulfide venting at 340°C from tectonic fissures.
These findings not only rewrite marine biology textbooks regarding the metabolic limits of multicellular life but also offer planetary geologists critical clues about potential biosphere conditions beneath the icy crust of Jupiter's moon Europa.