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Subnautica 2 Water Guide: How to Get Drinking Water

Person with a scanner in Subnautica 2 game
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Water is everywhere in Subnautica 2. It’s the main feature of the game. But as in real life, drinking seawater is an ill-advised means of survival.

Fortunately, you can’t accidentally drink the seawater in Subnautica 2, but as with all good survival games, you’ll need to keep that hydration up. Once you’ve got water sorted, our Subnautica 2 food guide covers the other half of keeping yourself alive.

So, where is this drinking water?

Good news! It is incredibly easy to find.

Where to Find Water Slugs in Subnautica 2

Dotted around the sea floor you’ll find these lovely little guys. Totally non-hostile, they glow in the dark, and they’ll sit patiently for you to come find them.

Subnautica 2 Sea Slug for water

They’re particularly common around the starting Lifepod, so you shouldn’t need to travel far to find your first few.

Once you’ve grabbed one of these little sacs of watery goodness, you have a couple of options.

After unlocking the Digestion Adaptation, you can drink them right from your inventory for a quick fix, but this isn’t the best way to get the maximum refreshment out of them.

As you can see, the Water Slug will give you 15 water, with your water meter maxing out at 100, but it comes at the cost of 5 food.

Menu showing how to get water in Subnautica 2

But drain that slug into a bottle and get yourself a nice 40 water, with no food cost!

How to Make Water in Subnautica 2

As you can see, the water slug will give you 15 water (you have 100 maximum) but it will come at the cost of 5 food (you also have 100 maximum). But drain that slug into a bottle, and get yourself a nice 40 water, with no food cost!

How do you go about doing this? Easy, visit any fabricator, the one in your starting life pod will do fine, go to the sustenance menu, and there it is. No other components needed, don’t question where the bottle came from, or where it goes. Just enjoy your fresh water.

Bottle of water in Subnautica 2

There you have it, life’s main need has been resolved. Congratulations, step one on your survival journey has been completed.

Other Ways to Get Water in Subnautica 2

Water Slugs are the easiest option when you’re starting out, but they aren’t your only source of water forever.

Later, a Processor can turn three Fibrous Pulp into Water, while Isotonic Water can be crafted using a Flash Slug and Salt for an even bigger hydration boost.

As you start exploring further and crafting more equipment, it’s also worth knowing where to find Quartz in Subnautica 2, as it’s one of the most useful early-game resources.

You can also unlock Biomods that help with hydration, including Water Retention, which increases how much water you gain from drinking, and Water Secretion, which slowly produces small Filtered Water Packets.

Frequently Asked Questions

How Much Water Does a Water Slug Give You?
A raw Water Slug restores 15 water but reduces your food by 5. Turning the Water Slug into Water at a Fabricator instead restores 40 water without reducing your food.
Do You Need the Digestion Adaptation to Make Water?
You don’t need Digestion to turn a Water Slug into Water at a Fabricator. Digestion is important if you want to safely consume local flora and fauna directly.
Can You Drink Seawater in Subnautica 2?
No. You can’t drink directly from the ocean. You’ll need to collect Water Slugs or use other water-producing methods to keep your hydration meter topped up.
What Happens If Your Water Reaches Zero?
Your hydration meter is one of your main survival stats, so letting it run out will eventually start damaging your health. Keeping Water on hand is a good idea before traveling far from your Lifepod.

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Phil Black
Written by

Phil Black

Phil started his gaming life back in the early 90’s. Desert strike, Lemmings, Gran Turismo, Golden Eye, anything that he could get his hands on. Finally settling on the Metal Gear series as his all time favourite. This wide variety continues to this day and he can be found either doing many circles in Le Mans Ultimate, loot hunting in Diablo 4, making the perfect assembly line in Satisfactory, or surviving in peace and quiet in Sons of the Forest. While decidedly average as a gamer, he has fun along the way. Mostly. We don’t talk about Elden ring. A life long console gamer, he has finally seen the light and made the move to PC, so brings a fresh set of eyes to the hardware and gaming review field, but catching up enough to leave some handy guides as he learns along the way.

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