Evolutionary contemplations in homeostasis

During a recent conversation with a great friend, I
mentioned a conjecture that maybe our blood salinity and the
temperature of our bodies resembles the salinity and
temperature of the ocean at the time we crawled out, grew
lungs, and evolved into what we are today, that maybe our
homeostatis is like a kind of timestamp marking us as having
become land dwellers at a specific point in time.  My friend
was intrigued by this idea but didn’t offer support or
contradiction.  Hungry for deeper engagement and too lazy to
google it out, I engage you, dear Internet.  Shoot it down
or buoy it up.  Is there anything to this wild speculation?

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