Floating Artifact Triggers Cataclysm Inside a Submerged Ancient Temple

Cinematic underwater fantasy sequence inside a gigantic sunken temple. A diver in antique-looking reinforced diving armor descends through a massive submerged doorway covered in glowing ancient symbols. His helmet light reveals enormous statues disappearing into darkness. He reaches a circular chamber where a mysterious floating artifact slowly rotates above a stone pedestal. As he approaches, his breathing becomes visibly faster inside the helmet. The artifact suddenly activates. Hundreds of ancient symbols illuminate across the temple walls. Massive stone statues begin moving in the distance. The diver turns around and desperately swims toward the entrance as the entire temple begins collapsing behind him. Powerful underwater cinematography, realistic water physics, floating particles, bubbles, light rays, enormous scale, photorealistic live-action, suspenseful pacing.