A Red Crab Very Deep in Water Where Sunlight Is Dim Appears?

Answer

A red crab very deep in water where sunlight is dim appears black or blue in color depending on the crab. Crabs are normally red in color. As the crab travels deep into the seawater, the red color gets absorbed. Water tends to make everything look lighter and sometimes more bluer in color. So the deeper the crab goes the bluer it tends to look and occasionally depending on the depth of the red color can actually look black.
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