Sulphur is one of those resources in Subnautica 2 that players are already hunting for in Early Access, and the biome data tracked so far points to two locations: the Ice Shelf and the Abyssal Trench. One is relatively accessible. The other sits at depths that will test every piece of gear you have.
The two biomes where sulphur shows up
The Ice Shelf is the more approachable of the two. Sitting at 0-80m depth, it's a cold-region surface biome that community tracking has flagged as a confirmed watchlist zone with Sulphur among its listed resources. The threat rating is a manageable 2 out of 5, though an unconfirmed cold-region predator is noted in the area. For early-to-mid game players, this is the realistic first stop.
The Abyssal Trench is a different story entirely. Predicted to sit at 1000m and beyond, it carries the maximum threat rating of 5 out of 5. Sulphur appears in its resource table alongside deep crystal materials and late-game energy resources, but the depth, access timing, and even the official biome name are all still unconfirmed. This is late-game territory by any measure.
The Abyssal Trench is a predicted biome, not a confirmed Early Access launch zone. Its resource data is provisional and subject to change as Unknown Worlds Entertainment updates the game.
What the confidence levels actually mean
The biome tracking methodology used by community researchers separates data into three tiers: confirmed (appearing in official trailers or Steam materials), community-sourced (from Reddit, Discord, and pre-launch footage), and predicted (inferred from Subnautica 1 and Below Zero patterns).
The Ice Shelf sits in the community-confirmed category, which means its sulphur listing comes from player-reported sources rather than official documentation. The Abyssal Trench is fully predicted. That distinction matters when you're planning a resource run, because neither location is backed by developer-confirmed data at this stage.
Planning your resource routes
For most players working through Early Access, the Ice Shelf is the practical target. The shallow depth band means you won't need heavily upgraded equipment just to reach the zone, and the 2/5 threat level keeps it survivable compared to the deeper alternatives.
Sulphur tends to pair with other crafting materials in survival games, so it's worth mapping out your collection runs efficiently. The Subnautica 2 guide on finding sulfur breaks down exact spawn locations, how to unlock heat tolerance for the hotter zones, and what you can actually craft with it once you have a stockpile.
If you're building out a broader resource checklist, the full Subnautica 2 guides collection covers quartz, salt, and other materials you'll need alongside sulphur as the game expands through Early Access updates.
