Hello visitor! A note about the contents of this wiki: Barotrauma is a game with several years' worth history as a free-download open source game, and this wiki has been written primarily based on this legacy version. As such, not all content is relevant to the Steam release. So please wait patiently as the contents are updated, and feel free to contribute new information once the Steam version of Barotrauma is released!


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Armored Points



2 (5 if running)


2 (7.5 if sprinting)



Can Enter Submarine?







Alien Blood.png Alien Blood (x1)

Alien Blood.png Alien Blood (x1), Crawler Mask (x1)





The Crawler is a creature somewhat resembling merfolk, but twisted into a grotesque form. They are one of the most common creatures around the ocean in Barotrauma.

Description[edit | edit source]

Crawlers are relatively small and agile, and are one of the few creatures capable of entering the Submarine. They possess four pairs of red eyes, green skin, segmented spines on their back and multiple hand-like appendages, with only the frontal ones have any kind of functionality, allowing them to latch on surfaces, swim and to crawl (which gives them their name).

Crawlers normally appear in small groups of 1-4 individuals (upper/lower limit depending on the local difficulty), compensating their individual frailty, but they can be seen in huge swarms of 10 or 18 individuals in specific [Terminate a Swarm] missions.

In-game[edit | edit source]

Due to their size, Crawlers can not do much damage to the hull of the submarine, but their size allows them to easily fit inside and crawl around the ship. Should they find a way in, they can become a danger to the crew.

Crawlers can be a nuisance as they often target an area of a submarine's hull that is not within traverse of its ballistic defenses. There, they will often latch on to the hull and will gnaw away at it, causing constant leaks. This can be avoided with good positioning of the submarine on the Captain's part as well as using the submarine's electric discharge coil if available. Especially troublesome crawlers may also be smashed between obstacles in the environment and the submarine to great effect.

Multiple Crawlers can be a serious threat to a lone diver. If ambushed, the diver may be stunned from the attack long enough for the Crawler to retreat to avoid retaliation, opening up opportunities for other Crawlers to attack from different angles.

Crawlers can also claw their way through doors (though they take a long time to do so). Since Crawlers can only board the Submarine through hull breaches, it's recommended to wear a Diving Suit to protect oneself against the Pressure.

Crawlers are the second weakest creature in game, only behind the Hammerhead Spawns. Crawlers have in total, 50 HP (half of a human's), plus they are vulnerable to bleeding damage, and don't have any kind of protective shell or armor, which makes them perfect targets for Coilguns.

Crawlers are not picky eaters, and they tend to rapidly crowd around and consume any corpse (including the corpses of other Crawlers, which makes them opportunistic Cannibals) over attacking the Submarine. This can be used to one's advantage if dispatching them from the safety of a Railgun or a Coilgun, but it does not apply to Divers, as Crawlers prioritize attacking players over eating.

They will also flee at very low (<10) health, forcing the Submarine to chase them if part of a Mission. Fortunately, most weapons will outright kill them before reaching this point, if not bleed them to death.

Killing a Crawler allows the Crew to extract one unit of Alien Blood from its carcass (simply [G]rab its body, and take the item from their inventory). Alien Blood is a medical reagent necessary to manufacture Blood Bags.

Damage Values[edit | edit source]

Item Attack Damage
Bleeding Damage
Structure Damage
Stun Damage
Attack Duration
Claw 10
30 (Affliction)
0.25 Seconds
5 Seconds
Item Claw
Attack Damage 10
Bleeding Damage 30 (Affliction)|}}|}}
Structure Damage 3|}}|}}
Stun Damage 0.3|}}|}}|}}|}}|}}|}}|}}|}}|}}|}}
Attack Duration 0.25 Seconds|}}|}}|}}|}}|}}|}}
Cooldown 5 Seconds|}}|}}|}}

Trivia[edit | edit source]

  • The crawler is by far the most common creature in the game, as well as one of the least damaging.
  • Their unavoidable nature and low damage often leads submarines to ram into groups of crawlers and "scrape" them off of the sub via vertical movement, before they cause a breach.
  • Groups of crawlers tend to gather in ruts and narrow spaces in submarines' hulls, causing significant collective damage to exterior walls in a small area.
  • Crawlers went through a complete redesign, compared to their Legacy counterpart, which resembled a giant Shrimp
  • The legacy variant of the Crawler can be spawned by the use of Commands or through the Character Editor, see Crawler (Legacy)

Gallery[edit | edit source]

Audio[edit | edit source]