Flash Slug — Subnautica 2 Creature Guide | Location & Tips
Flash Slug is a passive creature in Subnautica 2 at 0–0m depth. A bioluminescent sea slug that fires a blinding coherent light flash in defense — its flashes may be viral data transmissions.
Last updated: 2026-05-15
Overview
Flash Slug (Seaslug kleptopharos — the stolen beacon slug). A free-swimming, luminescent relative of the water slug. Powered by a microbial photocell; inhales plankton, uses photodecomposition to feed luminescent bacteria in its mantle, generating bioluminescence through glassy fiber structures. Uses its light to attract food and mates. When threatened, produces a flash of blinding coherent light to drive off attackers, evolved from ancient gene-regulation systems using coded light signals. Moves using ray-like wing extensions of its mantle. Flash pattern variations correlate with Proteavirus activity — the flashes may constitute a high-speed viral data channel between organisms. Assessment: may deter predators if gripped. Close your eyes.
Stats
| Stat | Value |
|---|---|
| Behavior | Passive |
| Depth Range | 0–0m |
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