Sharks do have both rods and cones in their
eyes, which would indicate that they see in color.
But remember that in very low light color is not
discernible. When it is very dark at night we
can't tell the difference between colors only the
difference between shades of dark and light.
Sharks are similar in that at the surface they can
probably see in color, but at depth they only see
in monochromatic shades depending on where they
are at depth. Different colors have different
wavelengths and can penetrate water to different
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