FIND // PDA CASE FILE
Can't Find Cave Sulfur in Subnautica
Cave Sulfur is inside Sulfur Plants, guarded by Crashfish. The resource is easy to miss because the plant is empty only after its resident fish has left.
LAST CHECK
ANSWER LOCK // QUICK RESPONSE
Search Sulfur Plants in Safe Shallows Caves or Kelp Forest Caves. Lure the Crashfish out, evade its explosion, then return to the plant and collect the Cave Sulfur.
SIGNAL CONFIRMEDLOCATION SCAN
BIOMESafe Shallows Caves and Kelp Forest Caves
DEPTHEarly-game cave routes
REQUIRED EQUIPMENTO₂ tank, Seaglide for evading Crashfish, Survival Knife only if choosing a high-risk close-range method
BRING THIS
- O₂ tank
- Seaglide for evading Crashfish
- Survival Knife only if choosing a high-risk close-range method
DATA ACCESS LEVEL
Reveal only as much as you need
02 // DIRECTIONDirectionROUTE GUIDANCE
03 // EXACT ANSWERExact answerFULL SPOILER
COMMON REASONS YOU ARE STUCK
- Searching for Crystalline Sulfur in the lava zones
- Checking the floor instead of Sulfur Plants
- Destroying the plant before collecting the powder
- Chasing the Crashfish into another hazard
EVIDENCE LOG
Verification record
Facts on this page are separated from player speculation. Version-sensitive answers should be rechecked after an official update.
LAST CHECK2026-09-01
- SOURCE // 01Cave Sulfur OPEN SOURCE ↗WIKI · checked 2026-09-01
- SOURCE // 02Safe Shallows Caves OPEN SOURCE ↗WIKI · checked 2026-09-01
- SOURCE // 03Kelp Forest Caves OPEN SOURCE ↗WIKI · checked 2026-09-01