Bioluminescence

Bioluminescence is a type of illumination created by most life forms in Subnautica. Most bioluminescent life forms cannot generate light bright enough to help the player with night time navigation.

Bioluminescent Life Forms
Fauna= =Carnivores=

Trivia

 * The Stalker and Lava Lizard are the only two fauna having no true bioluminescent glands.
 * Bioluminescence is used by many real-life animals for counter-illumination, luring prey, attracting mates, confusing predators, mimicking other animals, communication, and as a warning to would-be predators.