Geometric underwater metropolis emerging from algorithmic void, Voronoi cellular coral towers forming sacred geometry aquatic chambers, fractal subdivisioned seaweed forests pulsating in golden ratio ocean currents, iridescent metallic aquamarine coral pink and obsidian surfaces catching ethereal bioluminescent deep sea glow, pure black ocean abyss background with floating plankton particles, clean sharp vector lines, digital brutalist marine architecture, mathematical generative oceanography, ethereal mathematical tidal pattern networks radiating from algorithmic coral city core, stunningly beautiful