Great White sharks have a white underbody to reduce visibility of it from underneath, to contrast to the brightness of the surface of water, and a gray top to reduce visibility of it when looking down.
How did it gain this evolution? Did the Shark figure this out, or did it just accidentally happen and continue to work?
As someone who was never taught evolution in school and just had to learn about it on my own.
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i get so angry sometimes i just punch plankton --Klinotaxis
-phones up the Sunday Mirror-