Subnautica 2 Fragment Locations

Fragments are one of the clearest progression gates in Subnautica 2. You can have full storage and still feel stuck if you do not know which blueprint to scan next.

How fragments work in Subnautica 2

Fragments are glowing wreckage pieces scattered across ocean biomes. Scanning them with your Scanner Tool contributes to blueprint completion. Most blueprints require scanning the same fragment type multiple times — a single scan rarely completes anything.

The scanning loop:

1. Decide what blueprint you want to unlock next, based on your current progression goal.
2. Identify which biome those fragments appear in and the safe diving depth for that area.
3. Dive specifically for those fragments. Avoid collecting unrelated materials or chasing other scans until you have hit the target fragment count for your chosen blueprint.
4. Return to base. Check your blueprint progress bar. Plan the next dive for any remaining scans needed.

Key rules for the EA launch build:

• Fragments have a short detection radius — you need to be within a few metres to trigger a scan. Do not expect to scan from swimming distance.
• Multiple players can scan the same fragment in co-op. If you are playing with others, the Scanner role should call out each fragment so everyone can get the scan.
• Fragment spawn positions are not fully fixed. The same biome area may have fragments in slightly different positions between saves or after patches.
• Scanning a duplicate fragment you already have does not hurt progress. Finding the same type twice confirms you are in the right area.

What to check before you leave base

Before following any fragment hunt, pause at your base and check your equipment. Make sure you have enough oxygen capacity for the depth you are attempting, enough food and water for the return trip, and enough inventory space to make the trip worthwhile. Players often fail not because the route is difficult, but because they leave with full bags, no spare planning, and no idea where to turn around.

If the guide mentions a deeper biome, a dangerous creature, or an unfamiliar fragment area, treat the trip as a scouting dive first. Your first goal is to understand the route, not to collect everything in one run. Mark useful landmarks, memorize safe surfaces, and return with a better plan.

• Empty your inventory before a resource run.
• Bring only tools that support the goal of the trip.
• Turn back earlier than you think you need to.
• Do not chase unknown sounds into deeper water unless that is the purpose of the route.

What scanning fragments unlocks

Every successful fragment scan advances a blueprint progress bar. When you hit the required count, that blueprint unlocks permanently in your Fabricator or Vehicle Bay interface. The unlock is saved to your file, not lost if you die.

Priority order for most new players:

1. Fabricator upgrades — additional crafting options and better tools. Unlock these first to expand what you can build.
2. Base modules — Storage Lockers, Reinforced Compartments, and mobility tools are typically the second priority once you have a working base structure.
3. Vehicle Bay + Tadpole — once you have a functional base and a material buffer, the Tadpole is the largest single progression jump available. It expands your effective range dramatically.
4. DNA Station — mid-to-late progression. Requires both fragment scans and enough creature scan data. Unlocks the DNA modification system for passive trait selection.

Common mistakes

The most common mistake is trying to solve several problems in one dive. Players leave to look for one item, see a new area, chase a creature, scan half a fragment, fill the inventory with random materials, and then realize they have no oxygen path back. A good run has one main target and one optional bonus.

Another mistake is trusting old information without checking the build note. Subnautica 2 is actively changing, and a page that was correct before a patch may need adjustment. That is why every major Sub2Wiki content page includes a Last Updated field and an Early Access note.

• Do not treat every glowing object as the goal.
• Do not enter a new biome with a full inventory.
• Do not ignore sound cues or creature behavior.
• Do not assume every older video still matches the current build.

How to recover if the guide does not match your save

If a location or step does not match your save, slow down and look for the reason before assuming you are lost. Early Access updates can move content, existing saves can behave differently after patches, and some routes are easier to follow from a different landmark than the one you first used.

The best recovery method is to return to a known safe point, reread the route from the beginning, and compare the goal with nearby landmarks instead of forcing the same path again. If the page has a patch note section, read it carefully. If the issue looks like a real change, use the contact page to report it so the guide can be updated.

Solo and Co-op Notes

Solo players should plan for safety and return paths. Co-op players can take more ambitious routes, but they should still organize roles before leaving the base. A simple four-player plan works well: one player scouts, one gathers common materials, one scans fragments and creatures, and one stays responsible for storage, crafting, and route calls. That division prevents the common co-op mistake where everyone swims to the same glowing object, nobody watches oxygen, and the team returns with four copies of the same material but none of the item they actually needed. If you play with friends, use guide pages as shared checklists. Read the quick answer together, agree on the target, and decide who carries what.

Early Access Version Notes

Because the game is in Early Access, this page should be reread after major updates. If a route no longer works, the best response is not to assume the guide is useless; it may simply need a version note. Check whether the page has a newer Last Updated line, whether the official patch notes mention changed resources, and whether your current save was created before or after a large update. For a wiki about a living game, freshness is part of accuracy. Sub2Wiki pages are structured so that changed locations, changed recipes, changed platform notes, and changed progression steps can be updated without rewriting the entire guide.

Related Sub2Wiki Pages