Subnautica: Below Zero All Leviathan Class Lifeforms

Here we’ll talk about the herbivorous leviathans.

Glow Whale

The Glow whale is a large filter-feeder that can be found in the Lilypads biome and the east arctic.
It is not agressive towards the player and can be interacted with. It is the first herbivorous leviathan the player will encounter. It has glowing “ears”/antennae on it’s head.
BEHAVIOUR:
It will usually stick to an approximate depth and move around that area before switching depths.
STATS:
It has 10000 Health making it the creature with the most health in Subnautica: Below zero.
It is approximately 30 meters long.
DEBUGID:
glowwhale

Ventgarden Juvenile

The Ventgarden juvenile is a medium-sized leviathan that gets its nutrients from geothermal vents and has a garden inside of it (as the name suggests). It lives in the Tree spires.
BEHAVIOUR:
It will move around the biome in a random pattern and will very often fluctuate depths as it kinda “hops around” to swim.
STATS:
Despite most leviathans in the Subnautica series, the Juvenile ventgarden is unkillable.
It is approximately 20 meters long.
DEBUGID:
smallventgarden

Ventgarden

The Ventgarden is a massive unmoving leviathan which is also the largest leviathan in Subnautica: Below zero. It has an ecosystem in it like the juvenile and It can be entered by the player and can have fauna inside of it (Such as brute sharks and small edible prey fish). It is found in the Tree spires.
BEHAVIOUR:
The Ventgarden doesn’t have much behaviour as it is unmoving and stays above a geothermal vent. It can be seen allowing the steam from the geothermal vents enter its body, and it can also be seen ejecting excess fluid through a opening/mouth on the top of it’s body.
It is unknown wether these massive creatures can move or not. It is located above a sort of crack in the ground in which resources can be found, one of the Ventgardens is located above an alien artifact.
STATS:
It is approximately 110 meters in height.
DEBUGID:
None, cannot be spawned.

Here we’ll be covering the carnivorous leviathans.

Chelicerate/Void Chelicerate

The chelicerate is a large carnivorous crustacean-like leviathan, There is one in the purple vents, one in the east arctic, and two in the tree spires. It has four distinctive mandibles that it can move around quite freely and that it uses to trap prey before swallowing it whole. It has long spikes along its spine and translucent webs between each spine and on its fins. It is the first carnivorous leviathan the player will encounter.
BEHAVIOUR:
The chelicerate will usually wander no further than 200m from its original spawn and will stay in it’s respective biome and very rarely wander near the border of it. It will most likely attack the player if it spots it but only if the player gets fairly close to it. It can be seen eating prey fish and Cryptosuchuses and Brute sharks.
STATS:
It has 5000 health and deals 75 damage to the player, if the player has less health than this it will play an animation of the player being swallowed whole. It deals 15-30 damage to the Seatruck and 21-33 to the Prawn Suit. It is approximately 40 meters long.
DEBUGID:
chelicerate
ASSESSEMENT:
Avoid. Can be avoided by staying far away.

The Void Chelicerate is pretty much the same as the regular one but it is 65 meters long and can be found in the void, after the player spends 30 seconds in the void one will spawn, this will continue once 3 Void Chelicerates have spawned or the player has left the void. It deals slightly less damage than the regular chelicerate and has no debugid.
ASSESSEMENT:
Avoid. Cannot be avoided if you are in the void.

Shadow leviathan

The Shadow Leviathan is a large leviathan found in the Crystal Caverns and Fabricator Caverns,
two can be found in each respective biome. It is unknown what these creatures feed on but it is presumably the Rock punchers and school of fish found in the region, as it has a mouth on the bottom side of it’s body. It may also be a filter feeder but this is highly unlikely.
It has a glowing blue mouth surrounded by mandibles which it uses to grasp it’s prey, it will usually spit/drool blue saliva on it’s prey but it is unknown why.
BEHAVIOUR:
The Shadow Leviathan usually moves around at relatively the same depth, it is never seen actually eating prey which suggests it doesnt require much food and moves very slowly.
It is seen snaking around crystal formations and sometimes sticking to the floor or ceiling of the cavern much like a snake, probably to be stealthy.
STATS:
It has 5000 health and deals 75 damage to the player, if the player has less than 75 health it will play an animation of the player being swallowed whole. It deals 20-35 damage to the Seatruck and 33-42 to the Prawn Suit.
DEBUGID:
shadowleviathan
ASSESSEMENT:
Avoid at all costs. Can be avoided by sticking to the walls and moving slowly, make sure you are either on the top or the bottom depending on where the leviathan is.

Ice Worm

The Ice Worm is a highly unique leviathan found in the arctic spires.
It can be seen devouring snow stalkers and attacking thumpers.
(Thumpers are an item which allow the player to temporarily distract the Ice worm, if they run out of power, the Ice worm is able to attack them.) It has armour plating on it’s back and has a nose that is heated when it comes into contact with ice and snow.
BEHAVIOUR:
It can be heard burrowing through the Ice and screaming in the distance when it is getting closer, it will usually pop out the ice and scare the player multiple times before actually attacking the player, it is sensitive to noise and has higher chances of attacking if you are in a vehicle.
STATS:
It will either deal a very large amount of damage to the player or instantaneously kill the player depending on the player’s health. It will deal a low amount of damage to the Prawn suit but a considerably high amount of damage to the Snowfox. It is recommended to enter the arctic spires by foot or use the Prawn Suit before acquiring the Snowfox Ice Worm Attack Reduction Module for the Snowfox. It is approximately 95 Meters long making it the largest carnivorous leviathan in the game. It is unknown how much damage exactly the ice worm deals as it fluctuates alot and the wiki doesn’t state how much damage it deals.
DEBUGID:
The Ice worm cannot be spawned but it can be forced to exit the ground using the “iceworm” command.
ASSESSEMENT:
Avoid at all costs, highly lethal. Can be avoided by using a Thumper (https://subnautica-belowzero.fandom.com/wiki/Thumper)

I am not putting the Squidshark here as despite the pda entry calling it a leviathan class lifeform, both the wiki and devs confirm that it isn’t and so i don’t really want to put it here.
If people want to see it on here then i may add it.

There is only one deceased leviathan in Below zero, and that is the frozen leviathan/creature.

It can be located in a cave in the glacial forest mini-biome (The glacial forest can be found in the Glacial basin) near Parvan’s bunker. It is a large land-dwelling creature which can be seen covered in green pustules from the Kharaa bacterium.
It is approximately 150 meters long and it was alive approximately 1000 years ago.
It is unknown wether or not more of this species are alive now, but it is unlikely.
It has two distinctive tusks which it may have used to impress a potential mate during mating seasons, and large armour plates going from it’s neck all the way down to the tip of it’s tail. It has five massive claws and two huge rows of slender and sharp teeth which it presumably used to kill it’s prey before swallowing it. It’s teeth resemble that of a Piscivore’s (An animal that feeds on fish) suggesting it lived close to lakes or to shore and it would most likely trap schools of fish or Eye Jellies in it’s mouth before devouring them. Al-An mentions that the creature was quite aggressive and shows relief of it being Frozen in ice.
You can be teleported to the Phi excavation site (The place where the Frozen leviathan is found) using the “goto FrozenCreature” command.
Here is a tutorial of how to get to the creature: