Underwater Diving Board Portal

Create a vertical cinematic underwater surreal photograph of {argument name="main structure" default="an abandoned concrete high diving tower"} standing on the ocean floor, seen from a low wide angle in murky blue-green water. The tower is tall, weathered, algae-stained, and monolithic, leaning slightly in perspective, with exactly 5 visible protruding structures: 1 long top diving board with a lone human diver standing at its very end, 1 small upper side platform, 1 middle platform with a thin railing, 1 lower platform, and 1 wide base-level platform with a ladder descending beside it. The diver is tiny compared with the structure, wearing swim trunks or a minimal diving suit, posed upright and contemplative as if about to dive. In the foreground, cut into the sandy seabed, place a large square shaft or portal glowing with warm golden-yellow light, as though it leads to another deeper ocean or impossible depth below; the square opening should have rough vertical concrete or rock walls and bright luminous water inside. Include exactly 24 small fish silhouettes scattered across the mid-right water column in loose groups, plus a few tiny dark particles and bubbles suspended throughout. The water surface is visible far above as a pale rippled ceiling with diffused sunlight, while the background fades into deep teal haze. Use {argument name="portal light color" default="eerie, dreamlike, quiet, monumental"} atmosphere, realistic underwater photography, soft volumetric light rays, suspended sediment, muted colors, high detail, no text, no logo, no watermark. Emphasize the impossible concept: the highest diving board in the world located at the bottom of the ocean, with even more depth glowing beneath it.