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bren737
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291 Posts

Initially Posted - 05/27/2009 :  16:51:09  Show Profile
Came across this interesting presentation on our affinity for the sea. It's a tad long (about 30 mins, I think) but worth a listen.

http://peterkreeft.com/audio/12_sea-spirituality/peter-kreeft_sea-spirituality.mp3

It's equal parts philosophical, poetic and religious in nature. Not trying to preach or offend, just think he pretty much sums up my thoughts and feelings; might for others as well. . .



Bren Peterson
C250WB, #642, "Ruah" (former)
Passport 40, "Fiato"
Kemah, TX

Edited by - bren737 on 05/27/2009 16:53:41

ruachwrights
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USA
258 Posts

Response Posted - 05/27/2009 :  18:37:33  Show Profile  Visit ruachwrights's Homepage
I'll have to look up this Peter Kreeft fellow. He is very articulate- though it would be better if he kept it to ten minute segments. The connection between magic, nature and the mystery of God is engaging. I like how he says there is lots of technical data explaining the sea but little explaining why we love the sea. I also like the way he explains how the sea makes the senses come alive.

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pastmember
Master Marine Consultant

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Response Posted - 05/27/2009 :  19:39:08  Show Profile
Affinity for the water? It is evolution, we came from the water. We have a diving reflex and many mammals returned to the water...
The body's reaction to submersion:
Submerging the face in water colder than about 21 °C (70 °F) triggers the mammalian diving reflex, found in all mammals, and especially in marine mammals such as whales and seals. This reflex protects the body by putting it into energy saving mode to maximize the time it can stay under water. The strength of this reflex is greater in colder water and has three principal effects:
Bradycardia, a slowing of the heart rate of up to 50% in humans.
Peripheral vasoconstriction, the restriction of the blood flow to the extremities to increase the blood and oxygen supply to the vital organs, especially the brain.
Blood Shift, the shifting of blood to the thoracic cavity, the region of the chest between the diaphragm and the neck, to avoid the collapse of the lungs under higher pressure during deeper dives.
The reflex action is automatic and allows both a conscious and an unconscious person to survive longer without oxygen under water than in a comparable situation on dry land. The exact mechanism for this effect has been debated and may be a result of brain cooling similar to the protective effects seen in patients treated with deep hypothermia.

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joemireur
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USA
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Response Posted - 05/27/2009 :  20:22:00  Show Profile
Thanks! A wonderful presentation! I have forwarded the link to those who wonder why I spend so much time on the boat. I titled it, "This is why!"

Long live Galveston Bay!

Joe Mireur, Master and Commander of Spirit, occasionally.
Seabrook, TX

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bren737
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Response Posted - 05/28/2009 :  21:37:53  Show Profile
Joe: I think you're right, "This is why" is a better title for it. I've, too, passed it on to friends/family who just don't understand. See you on the bay!

Frank: Well. . . uh. . . er. . . hmmm. . . I. . . uh. . . what?! Makes my head hurt!

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