Why is the seabed dark if the water is transparent?
In: Other
Because water plainly *isn’t* transparent. If it was, you’d be able to see straight down to the bottom of the ocean, and the ocean floor would be brightly lit as you say.
But the fact is that water does block a small amount of light (mostly red light, which is why the ocean is blue). This small amount of opacity isn’t readily apparent when you have, say, a glass of water, but 4000 meters of it is enough to completely block out the sun.
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