An intricate digital illustration of an ancient merman with delicate, elongated features and weathered, bioluminescent armor. The merman is submerged in a shimmering pond where the water creates iridescent distortions. Swirling colorful mist hangs above, pierced by sharp moonlight rays. The color palette mirrors the cosmic purples and deep blues of a nebula, blending soft organic horror with a high-fantasy aesthetic. Extremely detailed, no outlines, glowing focal points.