Survival

Drinking water: Water Slugs, Processor recipes and thirst

Make water near the Lifepod, compare later options, and recover from dehydration.

Early Access 1.2 · Buddy System Hotfix 1, September 3 amendment · Updated 2026-09-12

The short answer

Collect a Water Slug and craft Water at the Fabricator for a reported 40 water. Once you have a Processor, 3 Fibrous Pulp provide an alternative water recipe. Refill before leaving shelter.

Before you start

  • Leave free inventory space to collect slugs.
  • The raw-slug emergency option requires Digestion; prepared drinking water is the normal supply.

Make your first water near the Lifepod

Adaptive Measures fixed an uncollectable Water Slug beneath overlapping Feather Kelp in the Lifepod cave. Do not build your supply plan around an old pickup bug or a guaranteed respawn timer.

  1. Search the nearby seabed for Water Slugs; keep the Lifepod or your return landmark in view.
  2. Pick up a slug, return to the Fabricator, and select Water under Sustenance.
  3. Drink as needed, then prepare carried water for the return leg of your next trip.
Sources for this section

Choose a water recipe by available ingredients

Keep enough Pulp for food and Fiber before processing the remainder. If you already grow Macaron Sponge, its Pulp harvest can support all three supply chains.

OptionStation and inputUse
WaterFabricator: 1 Water SlugReported +40 water; nearby collection route.
Water from pulpProcessor: 3 Fibrous PulpAn alternative when harvested plants are easier to replenish.
Isotonic WaterFabricator: 1 Flash Slug + 1 SaltGameWith reports +55 water; uses Flash Slugs, not ordinary Water Slugs.
Sources for this section

At zero water, treat the cause of health loss

Dehydration drains health when the water meter empties. Drink and retreat to resupply; a healing item does not replace the missing water.

After Digestion, a raw Water Slug can provide a small emergency water gain at the cost of food. Check both meters before using it. Cooked or crafted supplies are the better planned option.

Supply crates can contain prepared water. Carry what you find, but do not assume an opened crate will refill after saving and loading.

Sources for this section

Use Biomods as support for carried water

Equip through the Biolab and observe the output on your current build before reducing carried supplies. These effects do not establish an unlimited safe dive time.

Buddy System Hotfix 1 restricts Water Slug breath markers to slugs in the world. An inventory slug is not a portable breath-marker source.

BiomodBioscan targetRole
Water RetentionCoral CrabIncreases water gained from sources.
Water SecretionWater SlugGradually produces a water packet.
Sources for this section

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Research checked 2026-09-12. This is a source-based guide; Kingy has not independently play-tested these steps. Evidence and coverage.

Independent fan guide. Subnautica 2 belongs to Unknown Worlds and KRAFTON. Game imagery from the official Subnautica website.