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Obviously a hat in outerspace! A cosmic old man's hat!! Very cool!

You are right that it is similar to a hat;)

Reminded me of the "Spy vs Spy" doodles in the margins of Mad Magazine.

at first glance tought it is jellyfish...color contrast was amazing

I agree. There is a similarity to a jellyfish)

I don't know the place but the photoshoot and place seems very beautiful..

One of those man-made islands in the China Sea? That line that could be a hat band, is an air strip.