I still haven’t pulled the trigger on Subnautica 2 myself. That’s a deliberate fence-sitter position I covered in our Subnautica 2 multiplayer pillar, and not much has shifted since. What has shifted is that the community is now eight days deep into the Early Access build, and there’s enough verified footage, dev vlog material, and reviewer coverage to compile a clean field guide of what’s actually in the water.
So this is reporter mode. Every leviathan below is sourced from launch coverage at IGN, GameSpot, PCGamesN, the official Subnautica 2 Wiki, and dozens of community sightings on r/subnautica. If a detail depends on a single source, I’ve flagged it. If the community is still arguing about something, I’ve left the argument intact rather than picked a side.
Here’s what’s confirmed in the May 14 build of Subnautica 2.
TL;DR
Five Leviathan-class creatures are confirmed in the Subnautica 2 Early Access build as of May 22, 2026: the Collector Leviathan, Shiver Leviathan, Great Jaw (nicknamed Clamthulu), Deepwing Brooder, and the World Tree (Titan-class). Two oversized alpha variants – Marrowbreach Alpha and Needler Mango Alpha – also stalk the map but don’t carry the Leviathan tag. Unknown Worlds has confirmed more creatures are planned across the two-to-three-year Early Access window.
Quick reference: every confirmed leviathan
| Creature | Biome | Threat Level | Notable Trait |
|---|---|---|---|
| Collector Leviathan | Open water near Alien Ruins | Aggressive | Sonar pulse stun, beak through titanium |
| Shiver Leviathan | The Void (~5,000m) | Lethal (one-shot) | Pack hunter, sexual dimorphism |
| Great Jaw (Clamthulu) | Fixed location ~100m, south of Lifepod | Stationary trap | Trip-wire tendrils, gastric acid |
| Deepwing Brooder | Above Alien Ruins, ~1,200–1,400m | Docile | Drops edible eggs hidden in oil decoys |
| World Tree | Edge of map, visible from surface | Dormant | Titan-class, story-locked |
A quick note on the count. You’ll see some guides claim four leviathans, others five, a few count seven. The discrepancy comes down to whether you count the alpha variants and how you treat the World Tree (Titan-class is technically the tier above Leviathan). My take, based on the consensus across Gamerblurb, Dropreference, and the official Subnautica 2 wiki, is five Leviathan-class creatures plus two alpha variants worth knowing about. That matches what’s actually in the launch build.
Collector Leviathan
Where: Open water east of the Lifepod, near the Alien Ruins. Coordinates reported by community at roughly -263372, 459189, -18222 per Yardbarker’s field coverage. Threat: Aggressive – first hostile leviathan most players will encounter Visual: Massive cephalopod, four tentacles tipped with bioglass claws, bioluminescent shell that shifts between crimson and purple
The Collector is the leviathan Unknown Worlds wants you to meet first. Unknown Worlds’ dev vlog on the Collector walked through the whole design pipeline for it, from Cory Strader’s early concept art to the
final UE5 implementation, and it shows. It’s the most thoroughly documented creature in the game.
The Collector’s AI runs on Unreal Engine 5 behavior trees and stimulus systems – it reacts to light, sound, and player actions in real time. AI designer Antonio Muñoz Gallego said the goal was to make the creature “constantly re-evaluating the situation,” not just charging blindly. In practice, the community has been reporting that it stalks you, lets out a sonar pulse that can stun, then closes for a grab.
What surprised me reading through the launch coverage: the Collector’s beak can crush titanium, and its preferred prey appears to be juvenile Great Jaws. So it’s not just a player-hunter – it’s an apex predator in its own ecosystem. That kind of detail makes the world feel lived-in.
Survival notes (community consensus):
- Outrun it with an upgraded Tadpole – it has a wide turn radius at speed
- Stick to terrain – its sonar tracking weakens around canyon walls and kelp
- Change depth rapidly to break a lock, don’t flee in a straight line
Shiver Leviathan
Where: The Void biome, around 5,000m depth – the map-edge boundary Threat: Lethal. The community consensus is one-shot kill regardless of vehicle Visual: Dark, bird-like silhouette with armored skull, scythe-shaped pectoral wings, exposed skeletal frame
This is the one freaking everyone out on r/subnautica. Players who’ve crossed the Void boundary describe an encounter loop that’s brutal by design.
Once you enter the Void, increasingly intense music starts playing. A female Shiver Leviathan approaches alongside two smaller males. The female sends a male to chase the player until they either leave the Void or die. Contact with a Shiver’s jaws kills the player instantly, Tadpole or no Tadpole.
The pack mechanics are what make this leviathan genuinely new for the franchise. Females grow significantly larger than males and develop tail organs that function as long-range sonar arrays. During attacks, multiple smaller males ride atop a single female, guided by her acoustic sensing. When prey appears, males detach rapidly and flank targets in coordinated strikes. The original Subnautica’s Ghost Leviathans felt threatening because they were huge and patrolled big spaces. Shivers are threatening because they’re a hunting team that’s smarter than you.
Players on the Subnautica subreddit have reported that shivers establish patrol routes – if you learn one’s pattern, you can time expeditions to pass through while they’re on the far side of their territory. That’s the kind of emergent strategy stuff that makes a survival game stick.
Survival notes:
- Stay inside named biomes – the species doesn’t pursue past the boundary, so a Tadpole turning back toward Kelp Forest or Coral Gardens loses pursuit
- Flares break stalking lines briefly
- Don’t dive deeper to escape – that often leads into another patrol corridor
The species name in the game’s PDA is Skythopterygion atropos, which translates roughly to “scythe-finned fate-ender.” Unknown Worlds did not chill with the lore writing on this one.
Great Jaw (Clamthulu)
Where: Fixed location at roughly -348459, 465944, -10150, about 350m south of the Lifepod and only ~100m below the surface Threat: Stationary trap – only dangerous if you swim into the mouth Visual: Enormous bivalve clam, two domed shells with jagged tooth-like projections, a stalk in the center surrounded by tendril-like sensory structures
The Great Jaw is the most interesting design pivot from the original Subnautica’s roster. It doesn’t chase you. It doesn’t even move. It just sits there with its mouth open, waiting.
The Great Jaw is an enormous ambush predator that functions like a giant Venus flytrap. When sensory structures in its core are triggered, it opens its eyes and closes its shell to trap whatever is inside. Inside that shell is gastric acid and a neurotoxin called domoic acid – projected symptoms include nerve damage, short-term memory loss, and death. Lovely.
The Clamthulu nickname is real, by the way. It’s the internal name in the game files at Unknown Worlds, kept as a code name even after the official “Great Jaw” naming. Devs being devs.
What makes this leviathan worth respecting even though it can’t chase you is a behavioral thing: a careless route through its mouth area can end badly even if the creature never moves. The danger is the player getting curious, swimming too close, and learning that the giant mouth was, in fact, a giant mouth. That’s a really clean horror design beat.
There’s also a lore detail buried in the PDA scans that I found genuinely cool. The specimen you scan in the game is considered relatively young, and no upper size limit could be established. Imagine a Clamthulu ten times larger, somewhere out in the ocean. That’s the implication.
Survival notes:
- Easy to reach, doesn’t require a Tadpole
- Approach from outside the shell, never from inside the mouth opening
- The clam is also a lithium source if you’re brave enough to mine it
Deepwing Brooder
Where: Above the Alien Ruins wreckage zone, deep open water, around 1,200–1,400m depth, east of the Lifepod Threat: Docile – the only confirmed non-hostile leviathan in the EA build Visual: Enormous armored arthropod with a tearing beak and segmented wing-like paddle limbs
This is the rare one. Players have reported finding the Deepwing Brooder maybe once in eight hours of gameplay. It appears in groups, floating above the player in open waters, and continuously drops what looks like eggs.
The egg gimmick is what makes the encounter worth seeking out. The Brooder drops what look like eggs, but most of them are oily decoy blobs that pop on contact. The real, consumable eggs are hidden among the decoys. It’s basically a treasure hunt with a leviathan-class creature as the dispenser. The decoy oil is what the Brooder uses to protect its actual offspring from predators, which means the gameplay mechanic and the in-universe biology line up perfectly.
The full taxonomic name in the PDA is Titanotagmatapterya amalthea – “the titanic wing-segmented cup of plenty.” Lore-wise it’s described as an arthropod leviathan with fatty deposits under its shell that it uses both to feed and to protect eggs.
Survival notes:
- Surrounding water is still dangerous – Marrowbreachers and other deep predators patrol the area
- Strong vehicle lighting helps in the dark wreckage biome
- Egg clumps are reportedly some of the best food items in the game
World Tree
Where: Visible from the surface near the Lifepod, towering above the ocean Threat: Currently dormant – Titan-class organism, the tier above Leviathan Visual: Colossal tree-like structure rising out of the ocean, visible from the horizon when you surface
The World Tree is the strangest entry on this list and the one that’s going to spawn the most theorycrafting once people get further into the story. It’s a Titan-class organism – the category above Leviathan – and quite possibly the largest creature in Subnautica 2.
You can see it from the moment you arrive. It’s the giant thing on the horizon in the opening cutscene. And then you realize it’s alive.
Story progression reveals that an alien species lives inside the World Tree in hibernation, deep beneath the world. These aliens tried to heal the planet from an infection and failed. The game also confirms this isn’t the only World Tree on the planet – there are others, scattered across the globe.
Practically speaking it’s not a combat threat right now. It can’t be scanned, you can’t swim inside it, and reaching it requires crossing the Void, which means surviving the Shivers. The Titan Rock Bores scattered across the world are likely its roots. Future updates may activate it – Unknown Worlds has been cagey on roadmap specifics.
Alpha variants worth tracking
Not Leviathan-class on paper, but big enough and dangerous enough that they belong in any “what can kill you” conversation:
- Marrowbreach Alpha – oversized predator variant, hunts aggressively in mid-depth biomes
- Needler Mango Alpha (sometimes Giant Needler Mango) – a much larger version of the regular Needler Mango that actively pursues the player and requires Distraction Flares to redirect
These don’t have separate scan icons like the named Leviathans, but they affect danger and exploration enough that players searching for the biggest threats should know about them. If you’re planning routes, treat alpha encounters as you would a non-pack Leviathan event.
What’s datamined but not in the EA build
Honest section. Some of what you’ll see in community lists is sourced from cinematic trailer footage or development files rather than playable encounters:
- Flying Leviathan – spotted in the Early Access cinematic trailer breaching the surface and soaring through the air. Wingspan dwarfs any flying creature from the original game. Whether it actually attacks players on the surface is still unconfirmed.
- Additional leviathans on the EA roadmap – Unknown Worlds confirmed more are coming throughout the two-to-three-year Early Access window
- The pre-launch “Void Leviathan” terminology – Some pre-launch coverage listed Void Leviathan as a distinct entity, but in the live build, the Void biome is the Shiver Leviathan’s habitat. There’s no separate creature with that name as of May 17, 2026.
How Subnautica 2 leviathans compare to the original
I’m not the right person to wax poetic about how the original Subnautica’s Reaper Leviathan changed gaming forever. I played the original about a decade ago and bounced off after roughly 10 hours. But you can look at the design philosophy on display in Subnautica 2 and see how Subnautica 2 stacks up against the original in terms of creature variety and AI sophistication.
The shift, from what long-time fans on Reddit are reporting:
- Pack hunting is new. Subnautica 1’s leviathans were largely solitary. Shivers are coordinated pack hunters with sonar communication, which wasn’t present in the first game.
- Stationary ambush predators are new. The Great Jaw is something Subnautica 1 didn’t have.
- No legacy creatures. Unknown Worlds has confirmed no characters, locations, creatures or vehicles return from the original Subnautica or Below Zero. Subnautica 2 is a clean slate set on a different alien ocean planet, with a brand new ecosystem built from scratch. The Reaper, Ghost, and Sea Dragon Leviathans stay in their original games.
- One small fan service moment. A statue of the Reaper Leviathan from the original game is available as a base decoration. That’s it. No living Reapers.
If you want to wait for the full ecosystem to fill in before jumping in, that’s a perfectly reasonable call. Honestly, that’s what I’m doing. There are a lot of solid options on the table right now – our underwater survival roundup has the picks if you need a hold-over.
Frequently Asked Questions
How many leviathans are in Subnautica 2 Early Access?
Five Leviathan-class creatures are confirmed in the May 14, 2026 build: the Collector Leviathan, Shiver Leviathan, Great Jaw, Deepwing Brooder, and the Titan-class World Tree. Two alpha variants (Marrowbreach Alpha and Needler Mango Alpha) also exist as oversized predator threats but don’t carry the Leviathan tag. Unknown Worlds has confirmed more creatures will land in updates throughout the Early Access window.
Are Subnautica 2 leviathans more dangerous than the originals?
Different kind of dangerous. The original Subnautica’s leviathans were mostly solitary terror – you saw a Reaper, you panicked, you ran. Subnautica 2 introduces pack hunting (Shivers coordinate flanking moves), stationary ambush traps (Great Jaw), and reactive UE5 AI that adjusts to player behavior. Community consensus is the Shiver Leviathan is the scariest single creature in the franchise, though the Reaper still has the iconic factor.
Can leviathans damage your base in Subnautica 2?
No specific reports yet of base damage in the EA build. The community discussion mostly focuses on player and vehicle damage. Worth re-checking after the first major update when builders push base placement closer to leviathan territory.
Are there Reaper Leviathans in Subnautica 2?
No. Subnautica 2 takes place on a completely different planet from the original Subnautica and Below Zero, with an entirely new ecosystem. Returning players get one small nod – a statue of the Reaper Leviathan is available as a base decoration – but no living Reapers exist in the new game.
How do you survive leviathan attacks in Subnautica 2?
Three rules from the community consensus: respect biome boundaries (Shivers don’t follow you back into named interior biomes), upgrade your Tadpole’s hull and speed before exploring deep water, and learn each leviathan’s audio cue so you hear them before you see them. Most leviathans in Subnautica 2 have a short-range stalker phase, a chase phase with audio cues, and a retreat threshold tied to health, so audio awareness genuinely changes survival rates.
Where’s the first leviathan you encounter in Subnautica 2?
Most players encounter the Collector Leviathan first, in open water east of the Lifepod near the Alien Ruins. It’s designed by Unknown Worlds to be the introduction to the franchise’s leviathan tier – aggressive enough to scare you, beatable enough that you don’t quit the game.
Coming soon
I’ll add my own encounter logs once I get into the game. For now, this is community-sourced, dev-vlog-sourced, and launch-coverage-sourced. If you’ve spotted something on Proteus that I missed, especially anything in the deeper biomes the early-game crowd hasn’t reached yet, drop it in the comments.
For wishlist or purchase info, see the official Steam page. Refresh planned for late June 2026 once the first month of EA patches has landed.
