A eerie, abandoned metropolis lies submerged beneath the waves, overgrown with kelp and coral. Sunken vessels, their rusting hulls cracked open like skeletal mouths, litter the seafloor. Bioluminescent fish dart through the ruins, their ethereal glow illuminating the darkened streets. A lone jellyfish, its translucent form aglow, hovers above a crumbling skyscraper.