Prawn Suit
The P.R.A.W.N. Suit (Pressure Re-Active Waterproof Nanosuit) is a bipedal exosuit designed for extreme deep-sea operations. It appears in both the original Subnautica and Subnautica: Below Zero. What appears to be a Prawn Suit was visible in the October 2024 Subnautica 2 cinematic trailer, though its return has not been officially confirmed.
Design
The Prawn Suit is a humanoid mech roughly four meters tall. Unlike the Seamoth and Cyclops, which swim through the water, the Prawn Suit walks along the ocean floor on two legs and uses jet boosters mounted on its back for short vertical hops. This ground-based movement gives it superior stability in deep, high-pressure environments where other vehicles cannot operate.
Specification | Value |
|---|---|
Crew capacity | 1 pilot |
Default crush depth | 900 meters |
Maximum crush depth (upgraded) | 1,700 meters |
Storage | 24 slots (6x4 grid) |
Arm slots | 2 interchangeable arms |
Upgrade slots | 4 module slots |
Power | 2 Power Cells |
Movement | Bipedal walking + jet boost |
Arm attachments
The Prawn Suit's defining feature is its two interchangeable arm slots. Each arm can be swapped at a Moonpool or inside the Cyclops. The default arm is the Claw Arm.
Arm | Function |
|---|---|
Claw Arm (default) | Grabs objects and punches creatures. Basic melee interaction. |
Drill Arm | Mines large resource deposits that cannot be collected by hand. Essential for late-game resources like Kyanite. |
Grapple Arm | Fires a grappling hook that attaches to terrain, allowing the Prawn Suit to swing, climb, and traverse vertical environments. |
Torpedo Arm | Launches torpedoes. Less commonly used than other arms. |
Propulsion Cannon | Grabs and launches objects at range. |
The most popular arm combination among players was the Drill Arm and Grapple Arm. The Grapple Arm allowed rapid traversal of vertical cave systems, while the Drill Arm harvested resources. This combination effectively turned the Prawn Suit into a deep-sea mining platform.
Depth capability
The Prawn Suit's default crush depth of 900 meters already exceeds the maximum upgraded depth of the Seamoth. With depth modules, it can reach 1,700 meters, the deepest point in the original game. This made the Prawn Suit the vehicle of choice for the endgame, where players needed to access the Inactive Lava Zone and Lava Lakes.
Module | Crush Depth |
|---|---|
No module (default) | 900 meters |
Depth Module MK1 | 1,300 meters |
Depth Module MK2 | 1,700 meters |
In Below Zero
The Prawn Suit returns in Below Zero with largely the same design. It is used for deep-sea exploration in Sector Zero on Planet 4546B. The Seatruck includes a dedicated Docking Module that lets the Prawn Suit attach to the Seatruck's modular train, replacing the Cyclops docking bay from the original game.
In Subnautica 2
The October 2024 cinematic trailer for Subnautica 2 briefly showed what appeared to be a Prawn Suit or a Prawn Suit-like vehicle. Unknown Worlds has not officially confirmed or denied its inclusion. The Tadpole and Dive Elevator are the only confirmed vehicles for Subnautica 2 alongside the Wakemaker booster. If the Prawn Suit does return, its role as a deep-sea walking platform for mining and combat avoidance would complement the Tadpole's swimming-focused exploration.