As you descend, which statement about color is true?

As you descend, which statement about color is true?

• A. Colors will remain largely the same
• B. Blues and grays disappear quickly
• C. Dive lights have little effect on apparent color
• D. None of the above

Answer: (D)

Color changes with depth because water absorbs light at different wavelengths at different rates. Red is absorbed first, within the first few meters, followed by orange and yellow; as you descend, those colors fade and the scene shifts toward blues and greens. Blues penetrate water best, so they don’t disappear quickly—they persist the longest—while color saturation overall drops. Dive lights can help restore color by introducing wavelengths that the ambient light has already absorbed, but their effect is limited by depth and distance. Since the statements given don’t accurately describe how color behaves as you descend, the best answer is none of the above.

Color changes with depth because water absorbs light at different wavelengths at different rates. Red is absorbed first, within the first few meters, followed by orange and yellow; as you descend, those colors fade and the scene shifts toward blues and greens. Blues penetrate water best, so they don’t disappear quickly—they persist the longest—while color saturation overall drops. Dive lights can help restore color by introducing wavelengths that the ambient light has already absorbed, but their effect is limited by depth and distance.

Since the statements given don’t accurately describe how color behaves as you descend, the best answer is none of the above.