Found It

As soon as the darkness receded, Atticus found himself inside facing a large, humongous body of water.

The entirety of the room was submerged in water, stretching endlessly in every direction. It wasn't just the floor or walls; the water filled every inch of space, suspended as if by an unseen force.

Above him, below him, and all around him, the water shimmered with a translucent glow, casting ethereal reflections that danced across the cavernous expanse. 

Atticus stood on a small platform, the only dry spot in the entire chamber, surrounded by the vast, undulating sea that stretched out in all directions.

Atticus took a step forward, his hand stretching out to touch the suspended water. He expected there to be some kind of force that would stop his hand, but he was a little shocked to see his hand simply phase through, entering the body of water.

"Hmm," Atticus moved his hands upwards and downwards, getting a feel for it.