Blue or Red, Which Wavelength is Absorbed First?

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Is the color of the first wavelength of light that is absorbed first blue or red?

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When going deeper?

Let's take some random picture from the Bali diving. What color dominates?

http://www.bali-diving-bali.com/Image/dive_bali_diving_dive_Mola_mola_manta7_safari_bali_package.jpg
 
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