Water Slug
ErbivoroPiccoloWater slug (tentatively *Seaslug hydroclast*). A biological enigma that converts seawater into drinkable fresh water.
Health
?5
Health
Maximum hit points. The creature dies and drops its loot when this reaches zero. Players can chip it down with knives, harpoons or vehicle-mounted weapons.
Swim speed
?5.0 m/s
Swim speed
Top movement speed underwater, in metres per second. Used when chasing prey, fleeing threats, or migrating between territory zones. For reference: the Seaglide tops out around 11 m/s.
Food pool
?100
Food pool
Hunger meter. Drains over time, refills when the creature feeds on prey or plants. When the pool empties, the creature actively hunts, which is why hungry predators are more aggressive.
Bulk
?5
Bulk
Engine mass / weight class. Drives water displacement (so creatures push you around), the carry-weight footprint when the corpse becomes an item, and AI prey-selection heuristics (bigger bulk means bigger fight).
Stats inherited from the small-creature default. Unknown Worlds hasn't shipped a per-creature override in this build.
Water Slug field notes
Water Slug is a piccolo erbivoro creature in Subnautica 2. It has 5 HP, swims at up to 5.0 m/s, and consumes from a 100 food pool. Grazing fauna. Non-aggressive unless cornered.
Engages 4 target types including Player, AI.Archetype.Marrowbreach, AI.Archetype.NibblerShark, and others.
Behaviour profile: Herbivore, Small body.
Drops & cooking
What Water Slug yields when killed or harvested, and which recipes consume those drops.
Drops
Crafts into (3)
Biosampling Kit× 3Single use tool to acquire biomods from local life.
- MMineralized Water Tablet
Mineralized water full of calcium carbonate
AcquaBasic human need. Drink to avert death. Do NOT drink seawater.
PDA Log
· Water SlugWater slug (tentatively *Seaslug hydroclast*). A biological enigma that converts seawater into drinkable fresh water.
1. Microbial fuel cell Removing salt from seawater is energy-intensive. Nonetheless, the water slug does it, perhaps as a byproduct of an internal microbial reactor that feeds on waste in seawater.
2. Fresh water reserve A hydrophobic plastic bulb that protects the slug from rapid dehydration by saltwater.
3. Plankton farm The slug's water bulb hosts a highly productive plankton species, turning light into food. Fresh water may be necessary for the plankton's chemistry, or it may be a prison—a way to keep the plankton from leaving.
4. Vampiric aura The water slug's developed beak has a sharp cutting surface. Possible evolutionary history as a parasite or commensal, tapping a host's blood and filtering out toxins.
Assessment: only nearby source of drinkable water. Advise fabricator cook before drinking. In case of kidney problems, consider allowing the water slug to feed on your blood.
Who Water Slug engages
Targets water slug will attack on sight or while threatened.
- ●Player
- ●AI.Archetype.Marrowbreach
- ●AI.Archetype.NibblerShark
- ●Tadpole
Last updated 2026-05-14