a glass jar with a skull inside of it

The creatures inside are alive, their glowing eyes blinking, shifting, and following the viewer. Tentacles writhe slowly, occasionally pressing against the glass as if testing their confines. Odd bubbles rise and pop in viscous, glowing liquids, producing strange noises. The monsters' breathing is visible, with faint fogging on the inner glass walls. The jars emit subtle pulsating light, and the environment shifts between dim ambient shadows and bright surreal reflections, adding to the uncanny vibe