Colour of the ocean

  • Thread starter alchemist
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  • #1
alchemist
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why does the waters of the unpolluted oceans and seas have their own different natural colour?
is it jus a mere reflection of the sky??
 

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  • #2
Chemicalsuperfreak
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Originally posted by alchemist
why does the waters of the unpolluted oceans and seas have their own different natural colour?
is it jus a mere reflection of the sky??

Yes. That's why it's blue on a clear day and gray on a cloudy day. You can also get brown nears estuaries, blue green in shallow areas with sandy bottoms, red in algae blooms, etc.
 
  • #3
Phobos
Staff Emeritus
Science Advisor
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Originally posted by alchemist
is it jus a mere reflection of the sky??

No, but sky reflection is part of the reason that you see oceans as blue.

Apparently, water tends to absorb more red light...
http://www.dartmouth.edu/~etrnsfer/water.htm?o=0
 

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