Subnautica 2 Map: Regions, Biomes, Depths and Alien Ruins

01

How the Subnautica 2 map is laid out

Read it as a layered map: Subnautica 2 starts you in its shallowest region and pushes you deeper as you head east across Proteus, an ocean moon in the Eido-Thea star system.

• Coral Gardens (west): the starting region and the shallowest, with the fewest aggressive lifeforms, though predators such as the Marrowbreach and Nibbler Mango live there. Its eight biomes run from the Shallows around the Lifepod to the scalding Graveyard in the east.
• Intermediary Basin (between the two): a largely empty trench patrolled by a Collector Leviathan. The wiki files it under the Tar Delta, and crossing it is currently the only way to reach the Karakorum Ruins.
• Karakorum Ruins (east): the Overgrown Ruins, Root Canyon and Karakorum Metal Farms, grouped around the dormant Karakorum Power Plant.
• Tar Delta (northeast of the Coral Gardens): an upcoming region that, per the wiki, mostly lies beyond the Early Access Barrier with virtually no resources or lifeforms yet.

Far outside the play area, the World Tree is visible about 2400 m north-northwest of the Lifepod, beyond the world border; the wiki says reaching it will mean crossing the Great Trench to Xanadu in a future update.

02

Subnautica 2 biomes list with depth ranges

The table follows the official wiki's Biomes overview; its resource lists are highlights, not full loot tables (the resources guide covers individual materials).

Some biome pages give different depths from the overview: Shallows 3–224 m, Graveyard 80–310 m, Overgrown Ruins 210 m and Karakorum Metal Farms 470 m, while the Void page gives 0–5000+ m and says the Void is "said to be over 5000 meters deep". The North Raceway's maximum depth is undocumented, and the Plateaus page gives none. The Root Canyon page adds Conduit Crystal and calls the canyon the deepest accessible biome in the current build.

03

Coral Gardens: where you start

Your Lifepod floats in the Shallows, a bright, cave-riddled biome full of passive life where the game teaches its basics; the Welcome Center sits about 75 m southeast. The rocky Dolerite Spires hold the game's only Great Jaw, an anchored ambush predator roughly 62 m tall. North-west of the Lifepod, the Necrolei Hills are dominated by Necrolei jellies and are where Necrolei Cysts grow.

The Plateaus are a blue, multilayered biome full of BFJs and Jelly Leis, with the Old Habitat and a deep cave network. The small Lead Zone is a shallow atoll with an interior cave and a sunken Cicada wreck. Coral Crabs roam the sandy North Raceway, while the South Raceway is littered with dead ones.

The Graveyard in the east fights back with heat. The wiki puts its water at an average 85°C, its caves at about 100°C and its vents near 200°C, and without the Heat Tolerance adaptation you take continuous damage from 75°C. Its caves are full of pioneer blackboxes, the Tailings Village marks the main cave entrance, and the Tadpole Pens sit on its eastern edge. The adaptations guide explains how to get Heat Tolerance.

04

Karakorum Ruins: the deep east

To reach the east you cross the Intermediary Basin, a trench of table-like rocks you can hide in, with a Collector Leviathan on patrol (see the leviathans guide). Beyond it, the Overgrown Ruins sit on a shelf with sheer drops on every side. The wiki calls it a mid-game biome: its large mineral deposits need a Sonic Resonator, Gateway Spires give a Tadpole a short speed boost, and the Needler Nest is the only natural source of Creature Enamel.

East of there stands the Karakorum Power Plant, a huge Axum power plant spanning 20–470 m, with the Root Canyon (364–750 m) filling most of the space beneath it. Northeast of the plant, the Karakorum Metal Farms basin centers on a glowing green pool with Troilite, Atacamite and Axum Bacterial Culture. A second Collector Leviathan patrols above, but the wiki says it will not notice you while you stay deeper than 350 m.

Depth is the practical gate. Per the wiki's Depth page, a stock Tadpole is safe to 250 m and to 450 m with the Depth Module Mk. 1, while a diver with Pressure Tolerance takes no damage from depth alone but uses oxygen faster past 100 m and again past 200 m unless wearing a Rebreather. The Tadpole guide covers the upgrades.

05

Key locations index

Coordinates are the X, Y values listed on each location's official wiki page (the Old Habitat's are from the wiki's map data), with the depth that page gives.

06

Subnautica 2 alien ruins: Axum sites and what to do there

Light spoiler note: this section names later objectives but skips story details.

The ruins belong to the Axum, the sapient species native to Proteus. Here is what each site asks of you, per the wiki:

1. Tailings Village (Graveyard). An abandoned Axum Tailings settlement built partly from Cicada salvage. Scan it for fragments such as the Processor, Power Transmitter, Repair Tool, a Tadpole and Tailing furniture, and watch for an unusually large Marrowbreach overhead.
2. Overgrown Ruins. Bring a Sonic Resonator for the big deposits and use the Research Outpost as a foothold: a Basic Battery in its power terminal brings several amenities online.
3. Axum Observatory. The front gate needs power from an Axum generator; its databank entry says pioneer-built generators are incompatible. Once the Power Plant runs, you can enter, scan the Orrery and play the holographic message upstairs.
4. Rosetta Stone. Scanning this titanium-alloy monolith unlocks the Axum Glyph databank entry and lets you translate all 85 Axum logograms.
5. Karakorum Power Plant. Get the Axum Vision adaptation from the Angel Comb directly below the turbine first, because the control screens use polarized light. Scan the damaged turbine section with a Bioscanner and repair it with the Habitat Builder using 10 Axum Ingots, 10 Strontium and 10 Titanium Ingots. The Lower Generator Control restarts the heat pipe, and the Upper Generator Control brings the plant online once the turbine is repaired; set its controls correctly or startup aborts. Both rooms have an oxygen enhancer that makes the water breathable.
6. Karakorum Metal Farms. Scan the Axum metal farm structures for the Metal Farm blueprint, break Mineralized Clinker with a Sonic Resonator for Troilite, use a Feedback Resonator on Atacamite deposits, and collect Axum Bacterial Culture from the runoff pools. Only five cultures are known to spawn, so spend them carefully.

07

Wrecks worth marking

Cicada wrecks mostly hold databank entries and blueprints. These are the major ones besides Sleep Bay 3:

Smaller Shallows, Spires, Hills and Plateaus wrecks hold early basics such as the Habitat Builder, Flashlight, Sonic Resonator and Wakemaker, and several are sealed by Bloom Biofilm until you have a Sonic Resonator.

08

Map edges: the Void, the barrier and what comes next

The Early Access Barrier is a tall wall of shimmering orange lines around the entire map that only appears up close. It does not physically stop you, but past it base building is disabled, your HUD warns that you are in the "Early Access Preview Area", and a Shiver Leviathan spawns nearby; in Survival it chases you until you return. The deep water around the map is the Void, the only place to scan the Shiver Leviathan and Shiver Male. Buddy System Hotfix 2 stopped the Shiver Leviathan interacting with unpiloted vehicles and fixed Tadpoles being teleported incorrectly when returning from out-of-bounds areas.

The wiki already lists upcoming Tar Delta biomes as future content: the Tar Flats (350 m), Tar Trenches (350–580 m), Great Jaw Farms (420–540 m), Homestead Ruins (440 m) and the Collection Zone (520–660 m), home of a Collector Leviathan nest. The Great Trench and Xanadu are also future locations. Treat these as provisional, and follow the walkthrough for the order in which today's locations come up.