A grand baroque ballroom completely submerged underwater, ornate golden chandeliers still hanging but swaying gently in the current, a grand piano floating mid room with octopus tentacles curling over the keys, bioluminescent jellyfish drifting between marble columns replacing the ball guests, shafts of turquoise light from above penetrating through a collapsed ceiling, silk curtains billowing in slow motion in the teal water, fish swimming through doorways, haunting sunken opulence, cinematic wide shot, 8k