Pose reference in the same soft 3D feature-animation style as the third reference image: the girl from the first image and the boy with glasses from the second image, in exactly the same orange-and-dark diving suits, glowing backpacks and clear bubble helmets as in the third image, swimming horizontally side by side in dark blue water, seen from the side: bodies stretched out flat like swimmers, one arm reaching forward, legs kicking behind, heads turned slightly toward each other. Plain dark water background, no other objects.
