Subnautica 2 is an underwater survival game, and the sea you explore is full of creatures. Some are calm and easy to ignore, while others hunt divers and make parts of the ocean risky to swim through. Scanning them also unlocks upgrades called Biomods, so they matter for progress as well as safety. You can collect and keep track of every creature as you find and scan it.
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Leviathan
Collector Leviathan
#1- Type
- Leviathan
- Region
- Karakorum; Graveyard passage
- Depth
- 145 to 289 m
- Behavior
- Aggressive
Shiver Leviathan
#2- Type
- Leviathan
- Region
- Past the edge of the playable map
- Depth
- -
- Behavior
- Aggressive
Great Jaw
#3- Type
- Leviathan
- Region
- -
- Depth
- -
- Behavior
- Aggressive when approached
Deepwing Brooder
#4- Type
- Leviathan
Fish
Bluemoon
#5- Type
- Fish
- Region
- Coral Gardens; Karakorum
- Depth
- 16 to 382 m
- Behavior
- Passive
Halfmoon
#6- Type
- Fish
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Passive
Harvestmoon
#7- Type
- Fish
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Passive
Waxmoon
#8- Type
- Fish
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Aggressive
Foureye
#9- Type
- Fish
- Region
- Coral Gardens
- Depth
- 2 to 60 m
- Behavior
- Aggressive
Hammerhead
#10- Type
- Fish
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Aggressive
Houndgar
#11- Type
- Fish
- Region
- Coral Gardens
- Behavior
- Aggressive
Pneuma
#12- Type
- Fish
- Region
- Karakorum
- Behavior
- Passive
Hoverthorn
#13- Type
- Fish
- Region
- Karakorum
- Behavior
- Passive
Blackthorn
#14- Type
- Fish
- Region
- Karakorum
- Depth
- 400 to 462 m
- Behavior
- Passive
Needler Mango
#15- Type
- Fish
- Region
- Karakorum
- Depth
- -
- Behavior
- Aggressive
Bullethead
#16- Type
- Fish
- Region
- Karakorum
- Depth
- 136 to 456 m
- Behavior
- Aggressive
Twin Sitaray
#17- Type
- Fish
- Region
- Karakorum
- Depth
- -
- Behavior
- Aggressive
Epicurean
#18- Type
- Fish
- Region
- Karakorum
- Depth
- 371 to 461 m
- Behavior
- Aggressive
Crustacean
Coral Crab
#19- Type
- Crustacean
- Region
- Coral Gardens
- Depth
- 29 to 59 m
- Behavior
- Passive
Sandspear
#20- Type
- Crustacean
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Aggressive
Periscopic Clowncrab
#21- Type
- Crustacean
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Passive
Cerathecan
#22- Type
- Crustacean
- Region
- Karakorum
- Depth
- 100 to 203 m
- Behavior
- Passive
Jetocaris
#23- Type
- Crustacean
- Region
- Coral Gardens; Karakorum
- Depth
- 63 to 303 m
- Behavior
- Passive
Tongue Thief
#24- Type
- Crustacean
- Region
- Karakorum
- Depth
- -
- Behavior
- Aggressive
Mango
Nibbler Mango
#25- Type
- Mango
- Region
- Coral Gardens
- Behavior
- Aggressive
Marrowbreach
#26- Type
- Mango
- Region
- Coral Gardens
- Behavior
- Aggressive
Jelly
Surge Jelly
#27- Type
- Jelly
- Region
- Coral Gardens
- Depth
- -
- Behavior
- Passive
Hycean
#28- Type
- Jelly
- Region
- Coral Gardens (Shallows)
- Depth
- -
- Behavior
- Passive
Jelly Ring
#29- Type
- Jelly
- Region
- Coral Gardens; Karakorum
- Depth
- 37 to 311 m
- Behavior
- -
BFJ
#30- Type
- Jelly
- Region
- Coral Gardens (Plateaus)
- Behavior
- Passive
Mollusc
Water Slug
#31- Type
- Mollusc
- Region
- Coral Gardens (Shallows)
- Depth
- -
- Behavior
- Passive
Flash Slug
#32- Type
- Mollusc
- Region
- Karakorum
- Depth
- 115 to 434 m
- Behavior
- Passive
Salpapod
Geordie
#33- Type
- Salpapod
- Region
- Coral Gardens
- Depth
- 2 to 100 m
- Behavior
- Passive
Electric Geordie
#34- Type
- Salpapod
- Region
- Karakorum
- Depth
- 179 to 470 m
- Behavior
- Passive to divers; attacks Tadpoles
Bloom organism
Bloom Parasite
#35- Type
- Bloom organism
- Region
- Bloom-infested Coral Gardens and Ruins
- Behavior
- Aggressive
What Types of Creatures Are in Subnautica 2
The creatures fall into several groups, and they're spread across different parts of the sea. Leviathans are the giants, including Great Jaw, a stationary, clam-like creature whose shell snaps shut when prey comes close, and Deepwing Brooder, a huge arthropod linked to egg clutches in deep water. Fish cover a wide range, from small forage fish like Bluemoon and Halfmoon to predators such as Hammerhead and Twin Sitaray.
Crustaceans include crabs like Coral Crab and Periscopic Clowncrab, along with Jetocaris, which moves with thrusters on its legs and looks after its young. Mangos are predators, such as the territorial Nibbler Mango and the large Marrowbreach. Jellies range from drifting ones like Surge Jelly to anchored ones like BFJ, while molluscs are slugs such as Water Slug and Flash Slug.
Salpapods are jet-propelled creatures like Geordie and Electric Geordie. Bloom organisms are blighted creatures tied to Bloom infestations in certain areas.
How Subnautica 2 Creatures Behave Toward Divers
Every creature has an attitude, and it's worth knowing before you swim up to one. Passive creatures mostly leave you alone, though Coral Crab flees from nearby divers and Periscopic Clowncrab is harmless unless it's threatened. Aggressive creatures go after divers, and some, like Great Jaw, only turn on you when you get close. Electric Geordie is generally harmless to divers, but it goes after Tadpoles, the vehicle you use to get around.
Two tools can change how a creature acts. The Survival Multitool makes most creatures flee when hit, and the Sonic Resonator leaves most of them briefly dizzy. Neither one kills, and after either, a creature won't strike back for a while unless it's defending itself. They buy you some space, but they don't remove the danger for good.
How to Scan Creatures With the Bioscanner in Subnautica 2
Scanning is how you record creatures, and it's where a lot of your progress comes from. The Bioscanner is an upgrade to your regular Scanner that you find in the Alien Ruins area, and it records fauna so you can unlock Biomods. A first scan of a creature can also count toward extra passive Biomod slots, so scanning new creatures pays off.
Timing matters, because scans aren't retroactive. Creatures you've already catalogued before getting the Bioscanner need to be found and scanned again. It's worth getting the upgrade as soon as you can and scanning as you go, so you aren't doubling back later.
Where Subnautica 2 Creatures Live and How Deep They Go
Creatures are spread across different areas, and where you are often tells you what to expect. Coral Gardens holds many of the shallow-water creatures, while Karakorum holds many of the deeper ones. Root Canyon and the Observatory are good examples of Karakorum spots where creatures gather.
Depth matters just as much. Several creatures, including Blackthorn and Electric Geordie, live hundreds of meters down, where the pressure is strong enough to crush you. Once you reach the Alien Ruins area, get the Depth Module for your Tadpole so you can explore that deep water without getting crushed.
The Most Dangerous Subnautica 2 Creatures
A few creatures are worth knowing about before you head into their areas. Collector Leviathan hunts swimmers and Tadpoles along the Graveyard passage, and Needler Mango launches hardened spines at prey and vehicles. Hammerhead patrols shallow reefs and may attack divers, while Shiver Leviathan is a large ambush predator seen past the edge of the normal playable area.
Marrowbreach is one to watch closely. It rushes nearby divers, and it pairs well with Houndgar, a squid-like hunter that flushes out prey and marks it for a Marrowbreach to ambush.
Bloom Parasite is the main creature you'll meet in Bloom-infested Coral Gardens and Ruins, and it's aggressive. If you rely on a Tadpole, keep it away from Collector Leviathan and Marrowbreach, since both go after them.
FAQ
How do I get the Bioscanner in Subnautica 2?
You need to reach the Alien Ruins area first, which comes after the Tadpole Pens task and a long stretch of open ocean. From the Alien Ruins Research Outpost, the Cicada wreckage sits about 500 meters to the southeast, and you can enter through the open hatch on its eastern side. Work your way through the wreck, and you'll reach the Bioscanner next to a broken door at the far end.
Can I see how many scans each Biomod slot needs?
Yes. The game shows how many scans each slot unlock needs, along with your total number of Bioscans, so you can see how close you are to the next one. That makes it easier to decide which creatures to chase next.
