深海生物发光潜水（POV）

Subject: an unseen scuba diver wearing a torch. Action: descends into a pitch-black ocean; the torch beam cuts a narrow cone; at depth she clicks the torch off; total darkness for two seconds; faint blue pulses appear; bioluminescent creatures begin appearing in the void - a jellyfish drifts past trailing light, a school of fish materializes as a glowing spiral; the diver's hand reaches out slowly; the fish scatter like sparks; the camera pans across the dark to reveal a vast structure of glowing coral below. Scene: deep open water transitioning to a coral structure. Light: only the torch and the bioluminescence, otherwise pitch black. Camera: first-person POV, gentle controlled motion. Style: photoreal nature doc, ethereal. Audio: slow exhale on the soundtrack, faint underwater whoosh, no music. Constraints: no watermark, no text, no extra hands.