Why is the seabed dark if the water is transparent?
In: Other
Transparency is a spectrum of conditions, ranging from not at all transparent, through somewhat transparent, all the way to quite transparent indeed.
Water isn’t 100% transparent. Some of that light get bounced around through the water and scatters. Not every photon makes it. So the more water there is between you and the observed object, the murkier and darker the object appears.
The same goes for air, only it’s thinner. When you look at objects that are very far away they may appear blue or grey, with desaturated colours and weakened brightness.
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