Mood: Enigmatic | Subject: A geometrically perfect formation of bioluminescent coral, glowing mysteriously beneath the crystal-clear surface of a tropical lagoon | Timing: Midnight, under a sky illuminated by the ethereal glow of the Milky Way | Lens: Wide-angle | Lighting Conditions: The uncanny radiance from the coral casting an otherworldly light on the surrounding water, creating a captivating illumination | Style: Fusion of marine mystery and abstract geometry | Colors: The vibrant pinks and blues of the luminescent coral contrasted with the deep blues and blacks of the midnight sea | Background: A backdrop of the vast, unfathomable ocean, its depth adding intrigue and wonder | Perspective: Underwater, capturing the mesmerizing design of the coral formation and the serenity of the marine world | Focal Point: The largest cluster of coral in the formation, its radiant hues most striking under the starlight | Space: Expansive, emphasizing the mystical allure of the coral and the tranquil beauty of the lagoon | Pattern/Texture: The rough, textured surface of the coral contrasted with the calm, rippling waters of the lagoon | Element defining the scale: A solitary, detailed seahorse near the coral formation, its size providing a sense of the scene's scale | Depth of Field: Deep, focusing on the coral formation while subtly blending into the mysterious ocean backdrop | Feeling: Mesmerizing and tranquil | Contrast elements: The enigmatic scene of a geometrically perfect formation of bioluminescent coral nestled in a tranquil lagoon under starlight, its mystical marine beauty and abstract symmetry enhanced by the otherworldly light and contrasting textures, set against the backdrop of the vast, starlit ocean.