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Topic Title: Sea Nomads
Topic Summary: ' Are First Known Humans Genetically Adapted to Diving
Created On: 04/19/2018 05:48 PM
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 04/19/2018 05:48 PM
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Cole

Posts: 35393
Joined Forum: 07/22/2003

Sea Nomads Are First Known Humans Genetically Adapted to Diving



If you hold your breath and plunge your face into a tub of water, your body automatically triggers what's called the diving response. Your heart rate slows, your blood vessels constrict, and your spleen contracts, all reactions that help you save energy when you're low on oxygen.

Most people can hold their breath underwater for a few seconds, some for a few minutes. But a group of people called the Bajau takes free diving to the extreme, staying underwater for as long as 13 minutes at depths of around 200 feet. These nomadic people live in waters winding through the Philippines, Malaysia, and Indonesia, where they dive to hunt for fish or search for natural elements that can be used in crafts.

Now, a study in the journal Cell offers the first clues that a DNA mutation for larger spleens gives the Bajau a genetic advantage for life in the deep.


http://news.nationalgeographic...diving-spleen-science/

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Dave doesn't like me.
 04/20/2018 05:26 AM
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3rdworldlover

Posts: 19483
Joined Forum: 07/25/2003

13 mins???
Holy crapshoot!
 04/20/2018 06:09 AM
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tom

Posts: 6200
Joined Forum: 07/25/2003

I knew it wasn't just the gills....

cos



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add a signature since I'm here in profile anyway
 04/20/2018 08:17 AM
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ww

Posts: 14510
Joined Forum: 08/17/2007

It's an impressive and surprising finding.  Genetic adaptation to high altitude is rare (think Ethiopia and Tibet, but not the Andes).  

This find might prompt further research into traditional coastal people, but I think it would be hard to find a culture that's more into diving than this one.

 



Edited: 04/23/2018 at 05:18 AM by ww
 04/24/2018 06:26 AM
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TeeBirdForever

Posts: 140
Joined Forum: 08/21/2016

Yet waterboarding triggers a different response. Interesting.

I think Burry is interested in Sea Nomads.

FORUMS : NPNR : Sea Nomads

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