Fantasy selkie, mythical creature, half-human half-seal, majestic, shiny dark blue hair, piercing emerald eyes, subtle freckles on nose, soft pale skin, elegant slender fingers, delicate hands, flowing white dress, intricate sea-shell embroidery, iridescent scales on arms and legs, glistening ocean mist, mystical aurora borealis, atmospheric lighting, cinematic composition, close-up of face, 3/4 view of body, dreamy soft focus, ethereal ambiance.