this post was submitted on 21 Mar 2026
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https://www.sciencenews.org/article/light-pollution-sea-ocean-new-maps#%3A%7E%3Atext=Offshore+oil+and+gas+rigs+and+wind%2C%28dark+blue%29+to+30+meters+%28yellow%29+deep.
Industry mostly.
I wonder what the red/orange lights signify. For example, in Ireland. And the blue.