3D animated children's science adventure in the dark twilight zone of the ocean

3D animated children's science adventure in the dark twilight zone of the ocean at 1000 m, by a dark basalt cliff; light comes from the kids' helmet lamps. The two kids keep exactly the faces, hair, orange-and-purple suits and clear bubble helmets of the first frame, bare hands. One smooth continuous take with no cuts, starting exactly on the first frame and ending exactly on the last frame. 0....