I'm trying not to second guess myself, I do believe what you described is what I saw.. your words triggered this memory nonetheless. This was during an astral projection/soul experience sometime last year. It truly looked like an ocean in the sky. The electric, magnetic, and gravitational forces that you talk about were visible colors (or perhaps I was observing waves outside of our visible spectrum?) They were inter-playing, moving through and around each other, flexing and bending,.. obviously separate from each other, but equally obviously working together as part of a larger whole. Imagine the rainbow colors of oil on water, or a large soap bubble. Layer that image over a picture of the open sea, flip it upside down, and viola, you are seeing what I saw
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The colors I saw were very similar to the second picture while it reflected/gleamed less, closer to the sheen in the first picture. At times it would brighten up... as if you passed a flashlight over an oily puddle, then went back to its original intensity. Again, I could be wrong, perhaps I've misinterpreted something in my psyche/temporal landscape, or there's the possibility that my mind created a connection with your description based on an ego desire to have seen it. Regardless, this is what I saw, and I instantly remembered it when I read your description.