The vibration grows in intensity

"What is all of this?"

The noise going on around you grows louder for several minutes until it becomes painful. At the same time, you feel your world heating up. As it does so, you start to realize you're not simply floating in nothing, but some form of fluid.

You instinctively want to hold your breath; then realize you have been breathing the entire time.

"Can I breathe... underwater?"

The haze over your mind allows small sensational gaps; memories of needing to hold your breath underwater come back to you. Perhaps there is something different about this liquid?

You start to feel a pull towards somewhere and the sound of the vibration around you starts to abate.