system
Given the following post, respond as if you're commenting on Reddit:
human
If you were thousands of feet below the ocean's surface, would a few photons still occasionally make it down to you?

I know that it's pitch black beyond a certain depth in the ocean, and I'm guessing that it becomes increasingly difficult to find a single photon at certain depths, but do any photons find their way down into zones which are otherwise pitch black? What's the farthest down we would expect to find a single photon?
gpt
The intensity of light follows an exponential decay curve, so the deeper you go the weaker it is. At some point, the light becomes so weak that you can measure the light in terms of how likely it is to detect a single photon of visible light within a certain period of time.

So, that probability never becomes zero, exactly, but it can get low enough that you can compare it with the light coming from the black-body radiation of the surrounding water.