KEY SCENE PICTURE. One 16:9 film frame, stylized 3D kids' animation in the look and darkness of image 3. No text.
Medium two-shot from the front in pitch-black water at 4000 m: the two children float side by side, Kira (7, small) on the LEFT of the frame, Yan (13, a head taller, glasses) on the RIGHT, exactly as on the character card (image 1): orange dive suits, clear bubble helmets with EXACTLY TWO dark puck lamps, one on each side at ear height outside the glass, clean glass with no bright highlight on top; violet and cyan neck rings. Watches exactly as in image 4: Kira's on her LEFT wrist, light-grey band, rounded-square screen glowing purple; Yan's round screen glowing cyan.
Both hold out their open palms, delighted. MARINE SNOW: very fine pale specks like dust, drifting slowly down, visible only inside the white beams of their lamps, like snow in a street lamp — tiny, not flakes.
Above Kira's open palm hovers ONE small deep-sea jellyfish exactly like the real Crossota in the NOAA photo, image 2: a transparent bell only a few centimetres wide, with red-orange canals inside, and many long thin pale-violet tentacles; it is lit by the beams and is about the size of her palm. No other animals, no bubbles.
