system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the ocean appear darker in color as the depth increases?

The shallows appear almost translucent, while the deep ocean appears dark blue to almost black... I just want to know what causes this since the ocean is made up of the same kind of atoms (H20), and light should reflect off them the same way, right?
gpt
Light gets absorbed by water, and the more water light passes through the more gets absorbed. It's *roughly* 50% every 150 meters (so 75% every 300 meters, etc). It gets absorbed more strongly at higher wavelengths, so red is the first to go: if you take a coke can down SCUBA diving, it will appear magenta.