How to Get Lithium in Subnautica 2 — Best Locations & Tips
Updated 2026-06-02
How to get lithium in Subnautica 2 is a critical question for base builders. Lithium is a key crafting material used in structural reinforcement, vehicle upgrade modules, and high-tier base components. This Subnautica 2 lithium guide covers every Subnautica 2 lithium location, the best Subnautica 2 lithium farming route, and tips for maximizing your lithium yield. If you are wondering how to get lithium in Subnautica 2 quickly, this guide saves you hours of searching.
Best Subnautica 2 lithium locations
How to get lithium in Subnautica 2 depends on which biome you visit. The best Subnautica 2 lithium location for early game is the Mountain biome caves, which contain numerous small lithium deposits on the cave floors. Each cave yields 3–6 lithium per run. For mid-game, the Deep Zone has large lithium deposits that require a Prawn Suit Drill Arm to mine — each large Subnautica 2 lithium deposit gives 4–6 lithium pieces. The Sandy Plains transition zone to the Mountains also has scattered Subnautica 2 lithium spawns on the seafloor. After the Phase 2 update, lithium spawn rates increased by 25% in all biomes, making it easier to find.
| Biome | Lithium Type | Yield per Run | Depth | Difficulty |
|---|---|---|---|---|
| Mountain Caves | Small deposits | 3–6 lithium | 100–200 m | Easy |
| Deep Zone | Large deposits (Prawn) | 4–6 per deposit | 400–700 m | Medium |
| Sandy Plains (transition) | Scattered small | 2–3 lithium | 50–120 m | Easy |
| Mountains (surface) | Scattered small | 2–4 lithium | 80–200 m | Easy |
| Dunes | Small + medium deposits | 4–8 lithium | 150–300 m | Hard (Reaper risk) |
How to get lithium in Subnautica 2 early game
The fastest early-game answer to "how to get lithium in Subnautica 2" is the Mountain biome. Craft a Seaglider and a high-capacity oxygen tank, then head to the Mountain island from the Starting Shallows. The caves beneath the Mountain island contain abundant Subnautica 2 lithium deposits. Each cave is shallow enough to explore without a vehicle — just watch your oxygen. The Mountain biome has no aggressive creatures in the caves, making it the safest early Subnautica 2 lithium farm. A full sweep of the Mountain caves yields 8–12 lithium, enough for your first reinforcements and vehicle upgrades. The Subnautica 2 lithium in Mountain caves respawns after 3–5 days thanks to the Subnautica 2 resource respawn mechanics.
Lithium usage and crafting
Knowing how to get lithium in Subnautica 2 is only useful if you know what to build with it. Lithium is used for: Reinforced Walls (2 lithium each), Waterproof Lockers (1 lithium), the Modification Station (2 lithium), Vehicle Upgrade Console (2 lithium), the Prawn Suit Depth Module MK1 (3 lithium), and the Seatruck Depth Module MK2 (3 lithium). Base reinforcements consume the most Subnautica 2 lithium. If you plan to build a large base, you will need 20–30 Subnautica 2 lithium for just the initial structural reinforcement. Plan your Subnautica 2 lithium farming accordingly.
FAQ
- How to get lithium in Subnautica 2 early game?
- The best early Subnautica 2 lithium location is the Mountain biome caves. Use a Seaglider to reach the Mountain island and explore the caves for 3–6 lithium per cave. Subnautica 2 lithium respawns after 3–5 days.
- How to get lithium in Subnautica 2 late game?
- For large quantities, use a Prawn Suit with a Drill Arm to mine large Subnautica 2 lithium deposits in the Deep Zone. Each large deposit gives 4–6 lithium. This is the best Subnautica 2 lithium farming method.