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.

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.

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.

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?
Do You Need the Digestion Adaptation to Make Water?
Can You Drink Seawater in Subnautica 2?
What Happens If Your Water Reaches Zero?
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