3D animated children's science adventure, one continuous 7-second shot in the pi

3D animated children's science adventure, one continuous 7-second shot in the pitch-dark twilight zone at 1000 m like @Twilight; all light comes from living things. The camera starts low beside the two kids from @Kids, who swim horizontally side by side as in @Key, Kira on the left, Yan on the right, with bare hands, and slowly tilts up: a long dense ribbon of thousands of tiny glowing lanternf...