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The prize is for an idea how to do it. Actually doing it will cost billions. You could enter your plan into the contest :)

Just doing the analysis for a plausible plan for a robot company would be expensive. My idea is at the "some guy in a pub" level :-).

Someone may have done the homework already. Doesn't hurt to try!

Just what can be decteded from the air, in shallow water. But could be a good start.

Unlike me they may have access to some capability to actually do it.