This article is about Bioluminescence in Subnautica. [[{{#explode:Bioluminescence|(}} (Below Zero)|Click here]] for information on this subject in Below Zero.

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Bioluminescence is a type of illumination created by many Flora species and all but two species of Fauna in Subnautica. Most bioluminescent life forms cannot generate light bright enough to help the player with night time navigation.

Bioluminescent Life Forms

<tabber> Fauna=

Carnivores

Herbivores

Leviathans

Ghost Leviathan
Reaper Leviathan
Reefback Leviathan
Sea Dragon Leviathan
Sea Emperor Leviathan
Further Sea Emperor Leviathan bioluminescence
Sea Emperor Leviathan Baby
Sea Treader Leviathan

Scavengers & Parasites

Other

Bloom Plankton
Bloom Plankton
Skyray
Warper

|-|

Flora=

Harvestable

Non-harvestable

Hazardous

|-|

Coral=

</tabber>

Trivia

The Stalker and Lava Lizard are the only two fauna having no bioluminescent glands.
- The Lava Lizard can don a glowing lava shell, but this is not bioluminescence. The glow comes from the lava, not through a biological function of the lava lizard itself.
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.
The Rockgrub is the only creature in Subnautica with bioluminescence that can light up the surrounding terrain.

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