- Primary Subject: Subnautica 2
- Key Update: Celestine is a crucial resource found in deep biomes such as the Alien Ruins, which players must mine with a Sonic Resonator to craft the Modification Station and various upgrades.
- Status: Confirmed
- Last Verified: May 22, 2026
- Quick Answer: Celestine is found 250+ meters deep near the Alien Ruins, Graveyard, and Observatory. Harvest its blue crystal deposits using the Sonic Resonator tool.
Celestine is a vital resource in Subnautica 2, but you might have a hard time finding it.
Celestine is used to make the Modification Station, which is vital in crafting upgrades to your Tadpole. It's also used to make the Axum Wall Lamp and the Strontium. Due to how often it's used when building, you'll need to farm a lot of Celestine as early as you can.
Wondering where to get it? Here's how.
How to Get Celestine in Subnautica 2
Celestine can be found near the Alien Ruins, which is 250 meters deep and around 1,300 meters east of the Lifepod. Because it's so deep, you'll need to use your Tadpole to reach this area. While the base model Tadpole can dive 250 meters deep, it would be good to get the Depth Module to dive deeper.

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One great place is near the Alien Ruins, around 1,600 meters east of the Lifepod. It's also near the Angel Comb. If you look around the area, Celestine can be found on the seabed and on the walls of the biome's protrusion.

Celestine is only found in large clusters, so you'll need the Sonic Resonator to break and harvest them. You'll receive one to three pieces of Celestine per deposit.
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Other places to find Celestine include the Graveyard, Observatory, Power Plant, and Root Canyon regions. If you plan to farm near the Graveyard and Observatory biomes, be careful - a Collector Leviathan can be found in those parts. If you're spotted, they will attack you even while in your Tadpole.
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