Product-style VFX reference sheet: a single sleek modern magic portal floating in the center, on a plain flat neutral light-grey studio background, nothing else in the image, no room, no floor, no people, no text. The portal opens like a camera iris: a tall rounded vertical opening about the height of an adult, framed by thin overlapping luminous white petals like a lens diaphragm made of light, revealing a deep turquoise underwater world with sunbeams, coral and jellyfish. Soft volumetric glow, sleek and minimal, photoreal high-end film VFX.
