Deep beneath an alien ocean lit only by the ghostly glow of colossal bioluminescent jellyfish the size of skyscrapers, the ruined spires of an ancient aquatic civilization rise from the abyssal plain like broken cathedral bones, their surfaces encrusted with glowing coral lattices and patrolled by translucent leviathans with eyes like molten gold, while schools of crystalline fish spiral through the hollow windows of drowned palaces, particles of glittering plankton drifting like slow-motion snow in the crushing darkness, painted in the ethereal underwater style of John Harris crossed with James Gurney, impossibly detailed, dreamlike atmosphere, National Geographic level realism. <lora:chroma-flash-heun_r128-fp32:0.5> <lora:ConceptArt_chroma:1> Concept art.