Glossary · The ocean
Midnight zone
From about 1,000 to 4,000 metres. No sunlight reaches it; the only light comes from animals that glow. Also called the bathypelagic zone.
In Icillion
It is part of how Icillion works: every answer you give moves the submarine, and this is one of the things you pass or score on the way down. How to play
Related terms
How deep does your knowledge go?
Seven prompts a day, twenty seconds each. Obvious answers float on the tip of the iceberg; rare ones sink all the way to the trench.
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