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The Collector Leviathan is the first hostile leviathan-class creature in Subnautica 2, a squid-like predator with procedural tentacle physics, UE5 behavior tree AI, and a Cthulhu-inspired design revealed in Dev Vlog #3.
Leviathan-class organisms in Subnautica 2. Covers the Collector Leviathan (the first hostile leviathan revealed for the game) and the no-weapons philosophy that governs every leviathan encounter.
The Waterslug is a creature in Subnautica 2, revealed through a Time Capsule ARG in July 2024 where developers hid close-up screenshots in the original Subnautica. Features long eyes and a translucent body.
The Great Jaw (nicknamed Clamthulu): the stationary giant-clam Leviathan from Subnautica 2's trailer, its trap mechanic, how to scan it safely, and where to find it.
The Hammerhead is an alien creature inhabiting the oceans of the ocean moon Proteus in Subnautica 2. It has a broad, laterally extended head and is highly territorial and aggressive toward larger lifeforms.
The Marrowbreach is a large, aggressive shark-like predator of the Coral Gardens region in Subnautica 2, named in the June 1, 2026 Hotfix 3 patch notes and known for hunting alongside the Houndgar.
The Houndgar is a small squid-like creature in Subnautica 2 that hunts in squads alongside the Marrowbreach, dazzling prey with bright flashes. Sampling one contributes to the Chum Cloud biomod.
The Cerathecan in Subnautica 2: a passive shelled crustacean that grazes the seafloor, the databank mystery of its genome-less shell, and where to find it.
The Nibbler Mango is a mid-sized, aggressive pack hunter found in the Coral Gardens of Subnautica 2. Scanning one unlocks the Slow Metabolism biomod, and Hotfix 3 rebalanced the species in five ways.
The Bloom Parasite in Subnautica 2: a virus-infected cephalopod that spreads the Bloom to larger predators, where it appears, and how a resonator pulse deals with it.
The Harvestmoon in Subnautica 2: the most filling of the three common moon fish, its food value, recipes, and where it schools in the shallows.
The Halfmoon in Subnautica 2: the most versatile edible moon fish, its recipes including Halfmoon Jerky and Threemoon Temaki, its databank entry, and where it schools.
The Waxmoon in Subnautica 2: the giant of the moon fish family, its glowing markings, the schools that follow it, and its reaction to a diver's light.
The Jelly Ring in Subnautica 2: a ring-shaped colony organism that feeds on hydrothermal vents, its bioluminescent signaling, and where to find one.
The Twin Sitaray in Subnautica 2: an aggressive electric predator that damages divers, vehicles, and vehicle power, how to read its attack cues, and what its databank explains about its paired biology.
The BFJ (Behemoth Finger-Legged Jelly) in Subnautica 2: a huge anchored jelly that grips rock and abandoned seabases, how its databank entry explains its gas bladders and arms, and where to find one.
The Hoverthorn in Subnautica 2: a skittish edible fish that rides its own water currents on a charge crystal, the Threat Sense biomod it unlocks, and its recipes.
The Pneuma in Subnautica 2: a kelp-mimicking edible fish that swallows rocks for ballast, its food value, and the ecological story its databank entry tells.
The Geordie in Subnautica 2: a common edible salpapod with a jet channel through its body, its food value and cooking, and its databank biology.
The Bluemoon in Subnautica 2: an edible moon-family fish common near the starting shallows, its food and water values, recipes, and schooling behavior.
The Electric Geordie in Subnautica 2: a pack hunter that latches onto the Tadpole and drains its power, how to knock one off, and the two biomods its scan feeds.
The Black Hoverthorn in Subnautica 2: the solitary dark variant of the Hoverthorn, where it lives around the Metal Farms, and how its scan and recipes work.
The Periscopic Clowncrab in Subnautica 2: a passive crab that hides among anemones, its glowing eye stalks, its color variant, and what its databank entry reveals.
The Jetocaris in Subnautica 2: a passive three-legged cave crustacean with jet-propelled legs, parenting behavior, and feeding tongues, plus where to find one.
The Hycean in Subnautica 2: a huge hydrogen-filled predator that floats above the ocean surface, why it is harmless to divers in the current build, and its databank biology.
The Bullethead in Subnautica 2: an aggressive armored squid that rams divers at high speed, how to slip past one with flares or a resonator, and the Camouflage biomod it unlocks.
The Flash Slug in Subnautica 2: a glowing slug that blinds divers with a burst of light, how to catch one anyway, and the Isotonic Water recipe it feeds.
The Surge Jelly in Subnautica 2: a drifting jelly that discharges a defensive electric shock, its role in unlocking the Homing Sense biomod, and how to scan one safely.
The Sandspear in Subnautica 2: an aggressive burrowing ambush predator, how to spot its lure, how resonators repel it, and its role in unlocking the Bioluminescence biomod.
The Epicurean in Subnautica 2: an aggressive bottom-dweller of the Karakorum runoff pools whose appetite and temper are made worse by Tongue Thief parasitism.
Index of the creatures confirmed in the Subnautica 2 Early Access build: leviathans, fish, crustaceans, jellies, molluscs and salpapods, with the regions they appear in and whether they are hostile.
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