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Can I get there?

Pick a vehicle and depth module to see what's within its crush depth, or dive on foot to see how long your air lasts. All numbers come from the game's vehicle and breathing code.

Vehicle
Depth module

Seamoth: safe to 200 m.

Biomes

Depth range of each biome's seabed (most of its spawn spots); the white line is your crush depth.
  • Within reach
  • Partly within reach
  • Too deep
Floating IslandsFloating Islands 0–268 m
AuroraAurora 0–64 m
Safe ShallowsSafe Shallows 12–78 m
MountainsMountains 28–540 m
Kelp ForestKelp Forest 33–137 m
Crash ZoneCrash Zone 36–512 m
Sparse ReefSparse Reef 59–281 m
Grassy PlateausGrassy Plateaus 68–194 m
Underwater IslandsUnderwater Islands 69–507 m
Mushroom ForestMushroom Forest 112–236 m
Crag FieldCrag Field 155–441 m
Jellyshroom CavesJellyshroom Caves 174–289 m
Bulb ZoneBulb Zone 189–480 m
Sea Treader PathSea Treader Path 192–445 m
Blood Kelp ZoneBlood Kelp Zone 219–593 m
DunesDunes 220–458 m
Grand ReefGrand Reef 224–484 m
Deep Grand ReefDeep Grand Reef 426–576 m
Lost RiverLost River 587–938 m
Inactive Lava ZoneInactive Lava Zone 1038–1306 m
Lava LakesLava Lakes 1332–1464 m
Primary Containment FacilityPrimary Containment Facility 1558–1621 m
Show as a table
NameFromToType
Floating Islands0 m268 mPartly within reach
Aurora0 m64 mWithin reach
Safe Shallows12 m78 mWithin reach
Mountains28 m540 mPartly within reach
Kelp Forest33 m137 mWithin reach
Crash Zone36 m512 mPartly within reach
Sparse Reef59 m281 mPartly within reach
Grassy Plateaus68 m194 mWithin reach
Underwater Islands69 m507 mPartly within reach
Mushroom Forest112 m236 mPartly within reach
Crag Field155 m441 mPartly within reach
Jellyshroom Caves174 m289 mPartly within reach
Bulb Zone189 m480 mPartly within reach
Sea Treader Path192 m445 mPartly within reach
Blood Kelp Zone219 m593 mToo deep
Dunes220 m458 mToo deep
Grand Reef224 m484 mToo deep
Deep Grand Reef426 m576 mToo deep
Lost River587 m938 mToo deep
Inactive Lava Zone1038 m1306 mToo deep
Lava Lakes1332 m1464 mToo deep
Primary Containment Facility1558 m1621 mToo deep

Landmarks

Resources

A resource counts as in reach when its shallowest common spawn depth is.

Air on foot

Seconds of air from full, holding one depth. The game drains oxygen faster below 100 m and again below 200 m. A Rebreather keeps the drain at the surface rate at any depth.
Tank0–100 m100–200 mbelow 200 mAny depth, Rebreather
No tank45 s30 s22 s45 s
Standard O₂ Tank75 s50 s37 s75 s
High Capacity O₂ Tank135 s90 s67 s135 s
Lightweight High Capacity Tank135 s90 s67 s135 s
Ultra High Capacity Tank225 s150 s112 s225 s

The Seaglide has no crush depth; your air is the limit. You take no pressure damage when swimming.

Vehicle crush depths

VehicleNo moduleMK1MK2MK3Damage below
Seamoth200 m300 m500 m900 m20 every 3 s
Prawn suit900 m1300 m1700 m—10 every 3 s
Cyclops500 m900 m1300 m1700 m20 every 3 s

Depth modules don't stack: the vehicle uses the best one fitted.

Habitats

Bases have no crush depth. They have hull integrity: it starts at 10, and each room, corridor, window and hatch below the surface adds or removes points; the penalties grow below 100 m (×2 by 1100 m). Below zero the base floods one section at a time.

Subnautica data: build 83031 (Oct 2025)