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Dec 15, 2018 at 0:03 history bounty ended CommunityBot
Dec 11, 2018 at 23:40 comment added Giu Piete I can't help thinking those two states + an oxygen content adequate to keep mammals alive would look like a thermobaric bomb.... Was looking at the whale bone as more of a way of moving high volumes of oxygenated fluids around in high pressure environment(which would(does) naturally affect the ability of the heart/peristaltic motion to serve organs in much the same way as relative acceleration does...than as a buoyancy aid.
Dec 11, 2018 at 18:24 comment added Nosajimiki Sort of, but even real numbers are not that big of a difference. Even an Earth like atmosphere would still only have a density of ~21kg/cbm at 17atm which would still not make a person noticably boyant
Dec 11, 2018 at 18:08 comment added Giu Piete You seem to be treating them as independent variables then. What does an environment of 'earth-normal' atmospheric molecular proportions look like at 17atm & 10kg/cbm..
Dec 7, 2018 at 23:07 comment added Nosajimiki @john Exactly, and since this hypothetical atmosphere only has density of 10kg/m^3, buoyancy adaptations are not needed.
Dec 7, 2018 at 22:55 comment added John Thats a uniquely whale adaptation and there is no evidence it is related to pressure, whales have high density bones for buoyancy control because they have to have air filled lungs.
Dec 7, 2018 at 22:24 comment added Giu Piete onceinawhale.com/2013/06/03/down-to-the-bone I'll stop trying to push you towards making a more comprehensive answer! =)
Dec 7, 2018 at 21:41 comment added Nosajimiki Metabolism changes a lot because protein folding works differently under pressure, but overall bone structure is mostly unaffected. So, on a celular scale life will be different at different elevations if that is what you mean, but a full range of things like porous bird bones or dense mammal bones would all be fine at higher or lower pressure as long as the pores are filled with equal pressure gases as the environment, or a noncompressive liquid like water.
Dec 7, 2018 at 20:53 comment added Giu Piete different bone structures/compositions are a large part of what allows, for instance, aquatic mammals to survive pressure. it's not really a 'mostly unaffected' change...still props for being the first person brave enough to answer.
Dec 7, 2018 at 18:55 history answered Nosajimiki CC BY-SA 4.0