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Slightly off topic, but can anyone ELI5 why parts of the ocean way off the coast can be significantly lighter or darker shades of blue?
I always thought it was to show depth.
It is. The Mid-Atlantic Ridge is clearly visible in OP's picture as a ribbon of lighter blue.
Oh, I thought this was meant to be photorealistic minus clouds.
But, at the depths mostly involved, you would not see it. It's all near-bottomless. It's only meant to convey information evocatively.
Well, it is, in that deeper water usually looks darker than shallow water
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