Subnautica: Every Aggressive Creature And How To Deal With Them

Subnautica’s ocean planet is filled with dangerous creatures ready to attack you. After all, Planet 4546B is their home, and you’re the one intruding and using their planet’s resources for your own benefit.

Before going out there and exploring every nook and cranny of this place, you should know what’s out there that can hurt you. Here’s a complete guide on Subnautica’s aggressive creatures and how to deal with them. And yes, sometimes the best thing to do is hide when a huge Leviathan is coming to get you.

Alien Robot

This is a quite unique creature because it isn’t original to the fauna of Planet 4546B; instead, Alien robots were created by the Precursor Race to repair and uphold Alien Bases and defend them (which is why they become aggressive when they see the player). You’ll find these robots roaming around the Alien Thermal Plant and the Primary Containment Facility.

Thankfully, these Alien Robots have a very small detection area, and they lose interest in you fast, making them seem almost passive and only really attacking when you’re too close, so dealing with them won’t be too much trouble.


This fish may be small, but it surely has a piranha-like set of teeth ready to attack you, dealing 7% damage in the process. And while that doesn’t seem like a lot, Biters are rarely alone, so a swarm of them will take a good chunk out of your health. You’ll find these feisty fishes in the Grassy Plateaus, Mountains, and the Jellyshroom Cave.

You have two options when dealing with Biters, either offer them a fish from your inventory, and they’ll eat that instead of you. However, only do that if there’s only one of them. The other option is to swim in unpredictable directions; they will chase but eventually leave you alone. But if you’re going to do that, keep in mind that these little guys swim really fast.

Blood Crawler

This creature resembles a spider, but with really long legs, you’ll find it in the Blood Kelp Caves, the Blood Kelp Zone, the Lost River, and in the Ghost forest biomes. While they deal very low damage, only 5%, Blood Crawlers like to move in groups, so you won’t be dealing with only one.

If you encounter these sea-spiders, swim really high, so they lose interest or use the repulsion cannon to blast them away.


If Biters didn’t seem annoying enough, meet the Blighters! A Biter zombified cousin. The main difference between the two fishes is the Blighters are slower, less aggressive, and don’t have a pack-forming mentality. You’ll find these creatures in the Blood Kelp Caves and in the Blood Kelp Zone.

They deal the same damage as Biters (7%) and only really attack when you’re too close, so they’re easier to deal with in comparison with their cousin.


This large predator is very aggressive and will deal 30% damage if they get to you. You’ll be able to find Bonesharks in the Bulb Zone, the Crag Field, the Crash Zone, the Crash Zone Mesas, the Mushroom Forest, the Underwater Islands, and in the Underwater Islands Caves biomes.

You have a few options when dealing with them. Try and swim into a hoard of other fauna to see in the Boneshark lose interest. You could also throw flares around; this will make the creature attack the light and not you. Another thing you could do is swim in circular motions to make them lose interest.

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You could also get into a submersible; however, the Boneshark will still deal damage to it, just less than if it were attacking you directly.


Bleeders looks like a lovechild between a tick and a leech; this parasite will use the tentacles it has around its mouth to grab its victim and suck their blood. You’ll find these things in the Aurora, the Deep Sparse Reef, the Lost River, and in the Deep Sparse Reef.

While the Bleeder bites don’t cause that much damage, it adds up over time, and it also drains the player’s food level.

To get a Bleeder off of you, you’ll need to punch it until it lets go. However, and this is very important, Bleeders are attracted to blood, so you’ll want to swim away and then punch the creature. If not, the blood from the Bleeder you’re attacking will attract the rest. On that note, you can also use propulsion or repulsion cannons to get these parasites out of the way.


This large creature will not only deal 35% damage but will also immobilize you at the same time. The Crabsnake can be found in the Jellyshroom Cave because they live inside the Jellyshrooms (which they use to hide and sneak attack the player or other creatures).

So to avoid them, swim high and above the Jellyshrooms or swim very close to the ground, under the Jellyshrooms so the Crabsnake can’t see you. Another option is to pay attention to where they’re hiding and avoid the Jellyshrooms you know have Crabsnake in them. If everything fails, use a vehicle, this creature will attack it, but it’ll deal very little damage.

Cave Crawler

Cave Crawlers are super similar to the Blood Crawlers; the main difference is that Cave Crawlers have shorter legs. You’ll find these creatures on the Aurora, in the Underwater Islands, on the Mountain Island, and in the Dunes.

You can deal with them the same way you’ll deal with Blood Crawlers: swimming away or using the propulsion/repulsion cannons.


While Leviathan-class creatures are the most feared ones in Subnautica, the Crabsquid doesn’t stay behind. You’ll spot this large monstrosity in the Northern Blood Kelp Zone, the Deep Grand Reef, and the Lost River.

These things deal 40% damage, and not only that, but they have an affinity for light, so they’ll attack electric objects and shut them down, for a short time, using an EMP blast. To deal with Crabsquids, you could turn off any lights and move very carefully, so they don’t see you. If you’re feeling brave, you can also try to distract them using flares.

Lava Lizard

This carnivore creature can mostly be found in the Inactive Lava Zone, the Lava Lakes, and inhabiting the Lava Castle’s interior. When it comes to attacking, this scaly life-form can either bite the player or spit lava at them. Either attack causes 30% damage.

Like most creatures in this guide, it is better to avoid the Lava Lizards than to deal with them. However, if you have any Lava Larvae on your vehicle, the Lava Lizard will just eat them and not attack you.

Ghost Leviathan

Just by looking at its name, you know this creature is going to be huge and powerful; in fact, this leviathan-class life form is the third-largest creature on the whole planet. An adult Ghost Leviathan deals 84% damage when attacking the player, while a Juvenile Ghost Leviathan deals 55% damage. They can also do some damages to your vehicles, especially the Cyclops.

You can find up to six Ghost Leviathans while exploring around; three will be in the Lost River, two in the Grand Reef, and one in the Northern Blood Kelp Zone. Additionally, three of them will progressively spawn if you enter the Crater Edge and stay there for a minute.

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When dealing with Ghost Leviathans is best to try and hide in small areas. However, if you’re trying to face the Ghost Leviathans that appear in Crater Edge, there’s nothing you can do except run for your life and return to the playable area.


At first glance, these creatures look harmless; after all, how can something so glowy and pretty do any damage? Well, that’s exactly what the Mesmer wants you to think as it is capable of manipulating your mind and trick you into swimming closer to them, and when you give in, it will attack you dealing 35% damage.

It can be really difficult to deal with this fish because its hypnosis is so strong it will automatically move the player towards the creature. However, you can break free by swimming far enough or looking away. The other option is to use the Propulsion or Repulsion Cannon to push the Mesmer away.

Reaper Leviathan

This big guy is likely one of the first Leviathan-class creatures you’ll encounter in the game; after all, there are twenty-five Reaper Leviathans in total on the planet, so spotting one will happen sooner than later.

Don’t let them get to you because they will deal a nasty 80% damage and can even instant kill you if you have your health below 80. Reaper Leviathans like to hang out in large open areas, like the Crash Zone, the Dunes, or the Mountains.

If you see one of these creatures run in the opposite direction as fast as you can, they can chase you for long distances if necessary. Try to hide in caves or swim into a ravine on the ocean floor. In the most desperate of cases, you can sacrifice your Seamoth and let the creature play with it while you escape away.

River Prowler

These creatures are large, deal 30% damage, and are exclusive to the Lost River biome. They’ll attack you if you come into range, so the best thing to do when dealing with River Prowlers is either flee or avoid them altogether.

Sand Shark

You’ll mostly have to deal with this creature while exploring the Grassy Plateaus, Crash Zone, and the Dunes. This sneaky shark likes to burrow into the sand and waits until somethings come alone to ambush and attack them (dealing 30% damage with each bite).

One way to deal with them is to really pay attention to your surrounding, as Sand Sharks make a series of low growls before attacking. So if you hear that, go back to the surface or your vehicle.

If you can’t avoid it, then start swimming and change directions quickly, as the shark swims in a straight line. If you manage to reach the surface or avoid damage for long enough, the Sand Shark will give up and go back to its original location. Alternatively, you can repel them using the Repulsion Cannon or a Torpedo System.


You’ll find these creatures in the Bulb Zone and in the Blood Kelp Zone. They deal 45% damage if they bite you and 15% if they shock you. So if you encounter them, you better pray that there’s only one of them, as Ampeels can travel alone or in packs from two to five members.

Because this creature generates electricity, it will mess up the Seamoth and can deal damage to the Cyclops.

The best thing to do when dealing with Ampeels is to avoid them or try to flee. If you have to engage, then using the Stasis Rifle, Repulsion Cannon, or a Torpedo System will help.

Sea Dragon Leviathan

This one is one of the big guys, being the largest aggressive creature on the planet. The good news is that there are only three on the map; two of them are in the Inactive Lava Zone and the other one in the Lava Lakes. The bad news? Well, if you encounter them, you’re going to have a bad time.

This colossal creature has four different attacks:

  • Bite: Instants kills the player and deals 10% to 20% of damages to the Prawn Suit
  • Swat: Deals 40% of damage to the player and 13% to the Prawn Suit
  • Fire Breath: Deals 20% damage
  • Meteor: deals 80% damage

As you can probably guess by now, the best thing to do is to try and avoid the Sea Dragon Leviathan at all costs.


These guys will likely be one of the first aggressive creatures you’ll meet. They deal 30% damage and hang around the Kelp Forest and the Crash Zone. Very rarely, you’ll see them swimming in the Safe Shallows.

There are two ways you can deal with Stalker. These creatures are weirdly very fond of metal, so if you have any metal salvage, then drop it, and the Stalker will focus on the metal instead of you.

The other thing you can do is offer them a fish. Just put the fish on your hand, and the Stalker will eat it. This will tame the creature and, if you’re lucky enough, it will bring you a piece of metal in return. However, keep in mind that this effect is temporary and exclusive to the Stalker you fed; the others will remain aggressive towards you.


Just like the Alien Robots, the Warper was created by the Precursor Race. These cybernetic creatures deal 23% damage during stage 2, 42% damage during stage 3, and 69% damage during stage 4. However, they will only be hostile towards the player when the player’s infection level is high enough. Not only that, but they can spawn aggressive creatures to attack the player.

These creatures can teleport all around the map, and you’ll likely encounter them in some of the deeper biomes and around Alien Bases.

When dealing with them, you could try and use a Stasis rifle, but this weapon will only stun them for a brief period of time. Still, the best course of action is to avoid them and flee, if you can.

NEXT: Best Subnautica Mods For Every Player

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Miguel Amaro is a highly motivated person with a passion for knowledge and gaming who’s finally giving his newfound interest in writing a try. Before working as a writer, Miguel earned a Business and Administration degree and worked in Marketing. He is also trying to get to High Warlord in Classic WoW.

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