提示词Vertical fine art ocean wallpaper, a single elegant humpback whale far below the turquoise water surface, seen from underwater at a graceful diagonal, delicate sunbeams descending through deep navy blue water, enormous peaceful negative space at the top for a phone clock, dark quiet lower third, realistic marine photography, subtle light, no people, no text, no watermark, no borders.
Target: Phone wallpaper, 9:16 aspect ratio.
