great photoshop.
on a truly dark night, the clouds would not be illuminated in any way, and would looks like black holes in the night sky.
OTOH, you can have some photoluminescence in the ocean waves
looks like the clouds are illuminated by moonlight, maybe
I don't have the skills to take pictures like this, but I've seen a sky like this in real life before. Seeing a dark sky on a new moon is insane.