They were teetering on a thin shell of solidity beyond which – above, below, and straight out – yawned emptiness.  Nothing.  Yet indefinably something – colourless, neither light nor dark, pearlescent and nearly opaque, obscurely moving, shifting, curling; indefinably merging, recreating, fading into unimaginable depths like galactic space.

Chapter illustration for chapter 14b of Rayfan’s story Piranha. I don’t feel like I did the void justice; it looks a bit more eerie on brighter monitors. You can read the chapter in question here or start from the beginning here; warning for mature content.