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This guide covers the first several hours of Subnautica 2: the early resources to stockpile, how to handle food, water, and oxygen, your first BioMods and Adaptations, building a starter base, and unlocking the Tadpole. Subnautica 2 follows the series' no-weapons design, so survival is about exploration, crafting, and avoiding the moon's predators rather than fighting them. For the deeper systems, see Survival Mechanics and Crafting and Resources.
The Opening
After the opening crash, you reach the Lifepod with a basic toolset. A short distance away is the Welcome Center, a pre-built habitat you can find by following the power cords that run along the seafloor. Powering its depowered Bio Lab with a battery lets you use it without spending your own resources, and it stocks early gear such as the Habitat Builder. The opening also walks you through your first Adaptation by having you touch a pink Angel Comb plant to gain Pressure Tolerance. See Opening Sequence for the full intro.
Key Early Resources
A handful of materials are needed constantly. Knowing where each one concentrates saves a lot of time:
Resource | Where to Find It |
|---|---|
Titanium | Small and large nodes everywhere, in caves and on the open floor. Broken ship debris can also be salvaged and turned into titanium at a Fabricator. |
Quartz | Look for coral structures and circle them to find coral domes; the insides are packed with quartz. This is the fastest way to gather it in the start zone. |
Copper | Common along cave walls. A large cave system runs north of the Lifepod, reachable quickly by riding a current. |
Silver | Found in deeper cave systems hidden beneath the tall coral pillars further out from the pod. Silver nodes are pointed, unlike the blockier titanium nodes. |
Fibrous Pulp | Cut the plants growing throughout the shallows. Each plant yields several pulp, the base material for fiber and many recipes. |
Lucifer Rotsac | Orange orbs sitting inside small cradle plants in the shallows. Picked up directly, this is your early rubber source. |
Acidic Ions and Medical Gel Sacks | Inside the suspicious pink growths in caves. Cut them open with your blade first; grabbing the sack directly releases a poison cloud. |
See Resource Nodes for the full breakdown of where materials spawn.
Food, Water, and Oxygen
Water is the easy one early: Waterslugs are everywhere in the shallows, and purifying one gives 40 water per drink. Food is harder, because most alien fish cannot be eaten until you unlock the Digestion Adaptation from an Angel Comb north of the Lifepod, behind the first crash site. Before that, rely on prepared meals cooked from the moonfish in the shallows plus Fibrous Pulp.
Oxygen tunic plants release breathable bubbles; pause above one to top up your air, and they can refill an air bladder.
Build a second air tank early. It now takes only one inventory slot and can save you from a deep dive gone long.
Past 100 meters you burn oxygen much faster without a Rebreather, which becomes a priority craft (it needs Strong Acid, made from cysts at a Processor).
In an emergency you can eat fish or slugs raw for a reduced benefit (a raw Waterslug gives 15 water instead of 40, with a small food penalty), enough to survive the swim home.
Your First BioMods
BioMods are equipped at a Bio Lab, either the one in the Welcome Center or one you build. You start with one active slot and one passive slot. The active choices are Dash (a short burst of speed on a five second cooldown) or Pathfinder; Dash is the more useful pick for most players. The passive choices are Sea Skimmer (much faster swimming near surfaces) or Oxygen Control; Sea Skimmer pairs well with Dash and a Wakemaker for fast travel.
The rest of the BioMods stay locked until you find the Bioscanner, an upgrade for your Scanner whose parts sit in a wreck past the large trench that divides the world. Build it as soon as you can, then scan the right creatures to unlock the other abilities. Homing Sense is an especially valuable early unlock, since it marks hidden bases and powered structures so you can find more blueprints. The full list of abilities and their scan sources is on the BioMods page.
Building a Starter Base
Place your first base to the east of the Lifepod, ideally next to an underwater current. The game steadily pushes you eastward, so an eastern base keeps your travel times short, and a current lets you generate strong power. For power, a Solar Panel (titanium and quartz) gets you started, but a Hydroelectric Turbine (titanium, copper, and silver) placed in a current is far better and keeps the lights on at night. You need to scan a couple of broken turbines at nearby Alterra bases to unlock it.
A Scanner Station is one of the highest-value early builds: it can locate specific resources within a wide radius and mark them on your HUD, which makes gathering salt, cysts, and other materials trivial. Later, build a second base on the far side of the trench, and put a Scanner Station there too so it can surface the new late-game materials such as Celestine and Creature Enamel. See Base Building for layouts and modules.
Getting the Tadpole
The Tadpole is your first vehicle and a major quality-of-life jump. Building it requires a modular Moonpool plus two attached stations: a Vehicle Fabricator (which builds the vehicle) and a Tadpole Dock (which stores and recharges it). The Tadpole itself needs titanium ingots, glass, a system chip, and a power cell; the power cell in turn needs a Strong Acid, so the cysts northwest of the pod are the gating material. Tadpole fragments cluster southwest of the Lifepod, near the Welcome Center crater and the nearby CICADA ruins.
Once you have it, slot a portable storage container on the back for 15 extra inventory spaces, and install a Depth Module as soon as possible: the MK1 raises the safe depth to 450 meters, which is needed for almost the entire endgame zone. More on the moon's vehicles is on the Vehicles page.
Common Mistakes to Avoid
Skipping bio beds. Interacting with a bio bed in the wild permanently increases your inventory size, so use every one you find.
Letting parasites drain your vehicle. Small creatures can latch onto the outside of your vehicle and drain its battery, which can strand you far from base. Knock them off promptly.
Harvesting medical gel sacks wrong. Harvest the surrounding growths first, then take the gel sack; grabbing the sack first triggers a poison cloud.
Salvaging scrap too early. A piece of scrap takes one inventory slot but expands to several once salvaged into titanium, so only salvage it when you actually need the titanium.
Building alien storage. The mid-game alien storage holds fewer items than a basic floor locker despite looking larger, so it is rarely worth the space.
Panicking when you die. You drop carried items at the spot you died, but they collect in a recoverable container there. Note your surroundings and swim back for them.
Not repairing your vehicle under attack. Repairs are fast; hopping out to patch the hull beats letting the vehicle implode with you inside.
Crossing the boundary unprepared. A warning marks the edge of the current Early Access area. The creatures beyond it will kill an underequipped player quickly.
Misreading puzzles. When you look at something you cannot interact with, a question mark means you are missing the tool (go find and scan its parts), while a tool icon means you simply need to equip that tool.