PROMPT:
Create a stunningly vivid and photorealistic depiction of an ancient underwater ruin, submerged beneath the waves of a turquoise ocean, where coral and seaweed-draped structures seem to reverberate with a mystical energy. Employ a rich palette of vibrant colors, excluding pink, to bring this mystical world to life. Incorporate schools of iridescent fish darting through crumbling archways, and sunbeams piercing the surface, casting an ethereal glow on the seafloor.