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Metro 2039Necrolei Hills
The Necrolei Hills are Subnautica 2's infected hills about 300 m northwest of the Lifepod, the main source of Necrolei Cysts for Strong Acid, with Copper, Titanium, Deepwing Egg Clumps and fauna mutated by the Bloom.
The Necrolei Hills are a biome of infected hills about 300 m northwest of Subnautica 2's Lifepod, shallow to mid depth, and the main place to cut Necrolei Cysts, the plant you need for Strong Acid; Beebom calls it the main hub for the Cysts and describes its fauna as heavily mutated by the infection (May 19, 2026). It sits beside the Anemone Hills, which All Things How also places about 300 m northwest. "Necrolei Hills" is the guides' name, on the launch build of May 2026; Unknown Worlds' notes do not use it.
Quick facts
| Depth | Shallow to mid (All Things How, May 20, 2026) |
| Where | About 300 m northwest of the Lifepod |
| Resources | Necrolei Cyst, Copper, Titanium, Deepwing Egg Clumps |
| Creatures | Halfmoon, Foureye, Hycean, Necrolei, Waxmoon, Periscopic Clowncrab; Stilt Orb plants (Beebom) |
| Hazard | Infected, aggressive fauna; see The Bloom |
| Points of interest | None named by the guides beyond the Deepwing Egg Clumps |
Where is the Necrolei Cyst in Subnautica 2?
A Necrolei Cyst is the small flower on top of a Stilt Orb, a green, onion-like plant with pink roots. Game Rant finds them about 300 m northwest of the Lifepod at 25 m, on the launch build (May 14, 2026): cut one per Stilt Orb with the Survival Multitool. All Things How also lists Necrolei Cysts in the Plateaus. Since 1.2 Buddy System (Aug 19, 2026), "Necrolei Cysts can now be planted in Growbeds" (Unknown Worlds), so a few cuttings in a base Growbed save trips back here. See Farming.
Jade's May 16, 2026 guide, on the launch build, finds the Stilt Orbs north-northwest of the Lifepod on a bearing of about 350, just west of the purple jelly area of the Plateaus and next door to the anemones. The plant may scan as "Stilt Orb" and show its real name only when you look straight down at it with a tool in hand; she expects the Cysts to grow back.
What Necrolei Cysts are for
On Destructoid's launch-build list, Strong Acid is made from 2 Necrolei Cysts, or from 1 Sulfur and 1 Gold once you can reach the Graveyard (May 16, 2026). Strong Acid goes into Fiber Mesh (and so the Rebreather), the Power Cell, the Advanced Battery, the Dedicated Core, the Scout Ray chassis and the Photovoltaic Charger, which makes the Cysts one of the most used early plants. Full recipes are on Crafting Recipes; 1.2 also shows sources of Acid as green dots in the Scanner HUD (Unknown Worlds).
Creatures and the infection
Beebom's list for the hills is Halfmoon, Foureye, Hycean, Stilt Orb, Necrolei, Waxmoon and Periscopic Clowncrab (May 19, 2026). Foureyes attack divers; 1.2 fixed their attack hitbox (Unknown Worlds). 1.1 added the missing scan icons for the Necrolei and the Periscopic Clowncrab (Unknown Worlds). Infected areas show muted colors and their creatures turn aggressive (Wccftech, May 14, 2026). Deepwing Egg Clumps, left by the drifting Deepwing Brooder, have been scannable since 1.2. See Creatures.
Frequently asked questions
Where are the Necrolei Hills in Subnautica 2? About 300 m northwest of the Lifepod, next to the Anemone Hills, by All Things How's launch-build reference.
How do you get Necrolei Cysts in Subnautica 2? Cut the small flower on top of a Stilt Orb with the Survival Multitool, one per plant; since update 1.2 you can also plant Necrolei Cysts in a Growbed.
What is Necrolei Cyst used for in Subnautica 2? Mainly Strong Acid, made from 2 Cysts on Destructoid's launch-build list, which goes into Fiber Mesh, power cells, batteries and Tadpole parts.
Sources
- Subnautica 2 Regions and Biomes Reference (Early Access), All Things How (Pallav Pathak), May 20, 2026
- All Subnautica 2 Biomes and Regions, Beebom (Bipradeep Biswas), May 19, 2026
- Necrolei Cyst and Strong Acid, Game Rant (Hamza Haq), May 14, 2026
- All blueprints and recipes in Subnautica 2, Destructoid (Madison Benson), May 16, 2026
- Subnautica 2: Everything We Learned from Unknown Worlds, Wccftech (Alessio Palumbo), May 14, 2026
- Subnautica 2 Early Access 1.1 - Adaptive Measures Update, Unknown Worlds, Jul 8, 2026
- Subnautica 2 Early Access 1.2 - Buddy System Update, Unknown Worlds, Aug 19, 2026
- How To Get Every Resource In Subnautica 2, Breathtaker, May 18, 2026 (video)
- SUBNAUTICA 2 How To get Every Resource! Deepwing Eggs! Silver! Metal Farms And More Full Guide, Jade PG CRAFTED, May 16, 2026 (video)
Moments
How To Get Every Resource In Subnautica 2
Breathtaker
SUBNAUTICA 2 How To get Every Resource! Deepwing Eggs! Silver! Metal Farms And More Full Guide
Jade PG CRAFTED
Related
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Coral GardensCoral Gardens and North Coral Gardens are Unknown Worlds' names for Subnautica 2's early coral areas around the Lifepod; update 1.1 (Jul 8, 2026) put a second Biolab and more Silver there, and 1.2 gave North Coral Gardens its own music.
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Dolerite SpiresThe Dolerite Spires are a maze of jagged volcanic pillars in Subnautica 2's starting region, shallow to mid depth, with Lithium and Titanium, Quaker's Meetinghouse and two Spires wrecks that All Things How lists for the High Capacity Air Tank and the Rebreather on the launch build.
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Metal FarmsThe Axum Metal Farms are the far eastern edge of Subnautica 2's Early Access map, about 2,000 to 2,200 m east-northeast of the Lifepod beside the Karakorum Power Plant, the only source of Troilite and Atacamite and where you find the Axum Bacterial Culture to build a Metal Farm of your own.
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Observatory IslandObservatory Island is Subnautica 2's Axum tower rising out of the sea about 1,000 to 1,200 m east of the Lifepod, with the Alien Ruins (Unknown Worlds' Axum Ruins), the Rosetta Stone, a Biolab since 1.1 and the Axum Observatory, where the Early Access story stops.
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Root CanyonRoot Canyon is Subnautica 2's deepest explorable biome, a pitch-black canyon 365 to 750 m deep in the far east, with root-like walls, the Control Room, Tech Sites, Blight Nodes, a Cold Zone, colonist Dive Elevators and the Axum Metal Farms; the Collector Leviathan patrols its lower reaches.
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ShallowsThe Shallows are Subnautica 2's starting biome, the bright coral reefs around the Lifepod, 3 to 224 m deep by All Things How's count, with the Welcome Center about 85 m southeast, the first Angel Comb, Quartz-filled Coral Domes and caves of Copper and Titanium below.
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Tar CascadesThe Tar Cascades, in the area Unknown Worlds calls the Sparse Plains, are Subnautica 2's dark, tar-coated crossing about 700 m east of the Lifepod, 0 to 250 m deep, where the Collector Leviathan guards the way to the Axum ruins; cross low along the bottom in a Tadpole.
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Tufa ZoneThe Tufa Zone, which guides call Tufa Towers, is the biome of tall rock towers about 400 m south of Subnautica 2's Lifepod, home of the Great Jaw clam and its Lithium; it and the Thermal Area got their own music in update 1.2 (Aug 19, 2026).
See also
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Anemone HillsThe Anemone Hills are Subnautica 2's biome of towering pink-and-green anemones about 300 m northwest of the Lifepod, 0 to 151 m deep, where the infected Heat Tolerance Angel Comb waits behind Bloom you clear with the Sonic Resonator.
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The BloomThe Bloom is Subnautica 2's infection: biofilm, sap, cankers and parasites that block caves, infect creatures and Angel Combs, and cannot be cleared by hand. You get past it with the Sonic Resonator, and the armored pink cankers need the Feedback Resonator; some places and guides call it the Blight.
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PlateausThe Plateaus are Subnautica 2's rocky biome about 300 m northeast of the Lifepod, 23 to 119 m deep by All Things How's count, with Camp One, the Old Habitat and the caves that hold the early Silver; the sandy Lead Zone lies nearby.
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FarmingFarming in Subnautica 2 means Growbeds, built for Titanium x1, that grow plants from a seed item such as a Pent, Lucifer Rotsac or Fibrous Pulp, and since update 1.2 Necrolei Cysts. The Metal Farm, an Axum machine, grows a chosen resource on base power.
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GraveyardThe Graveyard is Subnautica 2's hot, orange-watered biome, 0 to 266 m deep, that needs the Heat Tolerance Adaptation; it holds Gold, Salt, Sulfur and Lithium, the Tadpole Pens, Tailings Village, a Cicada Wreck, Nahema's Lab and hundreds of Water Slugs.
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Crafting RecipesSubnautica 2's recipes by station, as listed by Destructoid on May 16, 2026 (the Early Access launch build) with conflicts from other guides beside them, for example Titanium Ingot (Titanium x3 at the Processor), Wiring Kit (Silver x1, Copper Wire x1) and Basic Battery (Copper x2, Acidic Raion Pouch x1). Hotfix 3 cut Interior Wall cost to a quarter, and no guide has republished a full list since updates 1.1 and 1.2.