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 with sparse pale sponges and sea fans; light comes from the kids' helmet lamps and soft blue bioluminescence; the look of @Key. Kira and Yan look exactly like @Kids: same faces, Yan's glasses, orange-and-purple suits, clear bubble helmets each with exactly two white lamps at ear lev...