a breathtaking underwater elven city sculpted from shimmering pearlum structures, glowing coral towers intertwined with flowing bioluminescent seaweed, schools of luminous fish swimming through grand archways, statues of ancient elven kings covered in oceanic moss, floating jellyfish casting a soft neon glow, an elven diver exploring the ruins, rays of sunlight piercing the deep blue, tiny bubbles rising from forgotten artifacts, ultra-detailed fantasy concept art, deep color contrasts, immersive atmosphere