The phenomenon of darkness increasing with depth in the ocean is primarily due to the absorption and scattering of light. When sunlight penetrates the surface of the water, it is gradually absorbed by water molecules and other substances in the water.
The majority of the visible light spectrum is absorbed within the first few hundred meters of the ocean. Red light is absorbed first, followed by orange, yellow, green, and blue light, with blue being the last color to be absorbed. As water is deeper, less light reaches those depths, resulting in darker conditions. Additionally, particles and organisms in the water can scatter light, further diminishing visibility as depth increases.
In summary, the decreasing intensity of light with depth is caused by the absorption and scattering of light by water, making it darker as one goes deeper into the ocean.
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