Marc Verhaegen wrote:
Eccrine Hydration
Gareth Morgan 2023
Ideas in Ecology & Evolution 16
doi org/10.24908/iee.2023.16.2.n
keywords:
Eccrine glands, Reverse osmosis, Drought, Human evolution, Dehydration
A series of immersion experiments has indicated that humans are able to
absorb sufficient fresh water from sea water by reverse osmosis through
their eccrine sweat glands to remain fully hydrated without drinking
anything at all. This unique facility would have enabled our ancestors to survive periods of severe drought.
:-) Thanks a lot, Gareth!
Very interesting & intriguing.
I'd conclude:
"This unique facility would have enabled our ancestors to stay in
sea-water for days."
Do sea-otters have something comparable?
I'd conclude that neither of you looked at the paper.
https://ojs.library.queensu.ca/index.php/IEE/article/view/16666
We are land creatures and always have been. You really
want to spend hours and hours bobbing around in sea
water? Day after day???
Homininds ranged well inland, FAR from salt water. Even
chimpanzees developed strategies for other water sources.
https://www.kent.ac.uk/news/environment/31891/rainforest-chimpanzees-are-digging-wells-for-cleaner-water
From the book "Eating Apes" by Dale Peterson
"Eating Apes is an eloquent book about a disturbing
secret: the looming extinction of humanity's closest
relatives, the African great apes—chimpanzees,
bonobos, and gorillas."
<
https://books.google.com/books?id=AOQlDQAAQBAJ&pg=PA11&lpg=PA11&dq=clematis+%22in+the+arid+region+of+Tongo%22&source=bl&ots=Ix1w7hFj2w&sig=ACfU3U1k3V2o0mqFLX56FJXbJcG74js1rg&hl=en&sa=X&ved=2ahUKEwi0xe-SqJiDAxXwMzQIHfU3CNcQ6AF6BAgMEAM#v=onepage&q=
clematis%20%22in%20the%20arid%20region%20of%20Tongo%22&f=false>
"Meanwhile, in the arid region of Tongo (in eastern
Democratic Republic of Congo), chimpanzees carry
around with them the water-filled roots of a Clematis
plant, which they use and sometimes share in the style
of a water bottle."
This is far more reasonable than the AA fantasy of
bobbing around in the ocean...
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