Glossary · The ocean
Bioluminescence
Light made by living things through a chemical reaction. Anglerfish, many jellyfish and some squid use it to hunt, hide or signal.
Where it comes up
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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