Photoreal Octopus in a Misty Enchanted Castle Hall

Photorealistic octopus in an enchanted castle hall. A large, wet-slick octopus with detailed suction cups and a subtly iridescent mantle stretches across a flooded marble floor. Tentacles wrap around moss-covered pillars, creeping vines, and ancient stone reliefs. The grand hall glows with magical orbs and stained-glass windows, casting warm candlelight and cool bioluminescent highlights. Mist swirls in the air; faint glowing runes hover near arches; particles drift, enhancing the sense of magic. The castle features towering arches, ornate carvings, and water rippling across polished stone. Color palette of deep blues, emerald greens, and golds. Ultra-detailed texture, hyper-realistic lighting, cinematic mood, fantasy atmosphere.