Subnautica 2 Prawn Suit
Walks the seafloor while everything else swims. The Drill Arm is your endgame mining + combat tool, and the Grappling Arm lets you swing across caves the Cyclops can't enter. The right Prawn build gets you into the Lava Zone alive.
Quick stats
PRAWN SUIT — VEHICLE BRIEF
- Vehicle class
- Walking exo-suit · 1-pilot
- Max depth (base)
- 900 m
- Max depth + MK2
- 1,300 m
- HP
- 1,250
- Movement
- Walks on seafloor · jets short hops
- Reaper grab
- ✓ Can be grabbed (loses charge)
- Best feature
- Drill arm — mining + combat
- Arm slots
- 2 (left + right) · all swappable
Build chain
FRAGMENTS + DEPTH MODULES
- Prawn Suit Fragments
- ×4 — Aurora interior, Mountain wrecks
- Build location
- Mobile Vehicle Bay (surface only)
- Build cost
- 2 Plasteel + 2 Aerogel + 1 Diamond + 1 Lead
- MK1 depth module
- 1 Plasteel + 2 Magnetite (1,300 m)
- MK2 depth module
- Currently same as MK1 in EA · TBD by full release
Arm loadouts
ARM SWAP — 2 SLOTS
- Drill Arm
- Mines ore · combat damage · best all-rounder
- Grappling Arm
- Hook seafloor · swing-traversal in caves
- Torpedo Arm
- Ranged · gas / explosive torpedo types
- Propulsion Cannon Arm
- Pull and launch creatures · niche
- Recommended L+R
- Drill + Grapple — covers mining + traversal
Troubleshooting
- ! My Prawn Suit got grabbed by a Reaper — it shook me out.
Cause: The Prawn can be grabbed; each grab consumes 1 of 4 health charges. Run out → vehicle destroyed.
- Punch back with the arm-strike key (default Q) the moment the grab animation starts.
- Equip Grappling Arm in your right slot — grapple a rock and let the Reaper drag you free.
- Use the Jump Jet upgrade to leap out of grab range vertically.
- Kill or stun the Reaper first — Prawn + Drill = 4 minutes solo TTK.
- ! Prawn won't fit through Lost River entrances.
Cause: Prawn is taller than Seamoth. Some passages have low ceilings.
- Use the Tree Cove entrance (widest), then drop into Lost River.
- Once inside, Grappling Arm lets you swing past tight gaps without walking.
- Don't try the Grand Reef vent in Prawn — almost always clips and damages hull.
- ! I keep running out of power in deep zones.
Cause: Prawn drains 0.5 power/sec just walking; Drill use is 5×. Stock 4 batteries minimum.
- Ion Power Cell upgrade: 5× capacity vs base. Required for Lava Zone trips.
- Carry a Battery Charger in your Cyclops bay — recharge on long expeditions.
- Module: Thermal Reactor — generates power from heat sources (Lava Zone friendly).
- Park near a Cyclops to dock and trickle-charge automatically.