Fauna

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Fauna is the scientific term for the animals of a region. Fauna in Subnautica can be found all over the planet, from the deepest darkest depths of the secretive Lost River to the vibrant Safe Shallows.

There is a large variety of Fauna, ranging from the minuscule, cave-dwelling Rockgrub, to the colossal Sea Dragon Leviathan that spews molten minerals from its mouth. Fauna on Planet 4546B are capable of enduring and adapting to various environments, although unable to thrive due to the presence of the Carar Bacterium. Certain species of small Fauna can sometimes be seen forming shoals.

Fauna on Planet 4546B only have one gender, which is capable of both laying eggs and fertilizing them. Two parents are still needed in the majority of cases. Fauna on 4546B also have yellow blood.

The player can scan Fauna with the Scanner, allowing them to view information about the creatures in their PDA.

Current list of fauna

Carnivores

Fauna	Attitude	Biome
Ampeel Shocker	Aggressive	Blood Kelp Caves Blood Kelp Zone Bulb Zone
Biter Biter	Aggressive	Crash Zone Mesas Dunes Grassy Plateaus Jellyshroom Cave Mountains Mountain Island Mountain Range Caves
Blighter Blighter	Aggressive	Blood Kelp Caves Blood Kelp Zone
Boneshark Boneshark	Aggressive	Crag Field Crash Zone Mesas Bulb Zone Mushroom Forest Primary Containment Facility Aquarium Underwater Islands Caves Underwater Islands
Crabsnake Crabsnake	Aggressive	Jellyshroom Cave
Crabsquid Crabsquid	Aggressive	Blood Kelp Caves Blood Kelp Zone Deep Grand Reef Lost River
File:Crash Fauna.png Crashfish Crash	Defensive	Kelp Forest Caves Safe Shallows Safe Shallows Caves
Ghost Leviathan ghostleviathan	Aggressive	Dead Zone Grand Reef Lost River Bones Field Lost River Ghost Forest Northern Blood Kelp Zone
Lava Lizard lavalizard	Aggressive	Lava Lakes Inactive Lava Zone Corridor Inactive Lava Zone
Mesmer mesmer	Aggressive	Crag Field Kelp Forest Caves Bulb Zone Lost River Mushroom Forest
Reaper Leviathan reaperleviathan	Aggressive	Aurora Crash Zone Crash Zone Mesas Dunes Mountain Island Mountains
River Prowler spineeel	Aggressive	Lost River
Sand Shark sandshark	Aggressive	Crash Zone Dunes Grassy Plateaus
Sea Dragon Leviathan seadragon	Aggressive	Lava Lakes Inactive Lava Zone
Sea Emperor Leviathan	Passive	Adult Primary Containment Facility Aquarium Juvenile Blood Kelp Zone Crag Field Dunes Grand Reef Mountains
Stalker stalker	Aggressive	Crash Zone Kelp Forest Kelp Forest Caves Primary Containment Facility Aquarium
Warper warper	Aggressive when target is infected with the Carar Bacterium Passive when target is not infected	Blood Kelp Zone Deep Grand Reef Dunes Grand Reef Inactive Lava Zone Inactive Lava Zone Corridor Lava Lakes Lost River Mountain Island Sea Treader's Path

Herbivores

Fauna	Attitude	Biome
Bladderfish bladderfish	Passive	Grand Reef Grassy Plateaus Kelp Forest Primary Containment Facility Aquarium Mushroom Forest Safe Shallows Underwater Islands
Boomerang boomerang	Passive	Crag Field Crash Zone Deep Grand Reef Dunes Grand Reef Grassy Plateaus Grassy Plateaus Caves Kelp Forest Kelp Forest Caves Bulb Zone Primary Containment Facility Aquarium Mountain Island Mountain Range Caves Mushroom Forest Safe Shallows Safe Shallows Caves Sea Treader's Path Sea Treader's Tunnel Caves Sparse Reef Underwater Islands Caves Underwater Islands
Crimson Ray ghostrayred	Passive	Lava Lakes Inactive Lava Zone
Cuddle Fish cutefish	Passive	Lost River Laboratory Deep Grand Reef Degasi Base Dunes Sinkhole Mushroom Forest Caves
Eyeye eyeye	Passive	Crash Zone Dunes Grand Reef Jellyshroom Cave Kelp Forest Bulb Zone Bulb Zone Caves Sea Treader's Path Sea Treader's Tunnel Caves
Garryfish garryfish	Passive	Crash Zone Mesas Dunes Primary Containment Facility Aquarium Safe Shallows Safe Shallows Caves Underwater Islands Caves Underwater Islands
Gasopod gasopod	Defensive	Crash Zone Mesas Dunes Safe Shallows
Ghostray ghostrayblue	Passive	Lost River
Holefish holefish	Passive	Crash Zone Primary Containment Facility Aquarium Bulb Zone Caves Mushroom Forest Caves Safe Shallows Safe Shallows Caves
Hoopfish hoopfish	Passive	Crag Field Grand Reef Kelp Forest Caves Bulb Zone Primary Containment Facility Aquarium Sea Treader's Path Sea Treader's Tunnel Caves Underwater Islands
Hoverfish hoverfish	Passive	Crash Zone Crash Zone Mesas Primary Containment Facility Aquarium Kelp Forest
Jellyray jellyray	Passive	Deep Grand Reef Mushroom Forest
Magmarang lavaboomerang	Passive	Lava Lakes Inactive Lava Zone Corridor Inactive Lava Zone
Oculus oculus	Passive	Primary Containment Facility Aquarium Jellyshroom Cave
Peeper peeper	Passive	Primary Containment Facility Aquarium Crash Zone Crash Zone Mesas Dunes Grand Reef Safe Shallows Sparse Reef Mountains Northeastern Mushroom Forest
Rabbit Ray rabbitray	Passive	Crash Zone Kelp Forest Primary Containment Facility Aquarium Safe Shallows
Red Eyeye lavaeyeye	Passive	Lava Lakes Inactive Lava Zone Corridor Inactive Lava Zone
Reefback reefback	Passive	Blood Kelp Zone Crag Field Grassy Plateaus Bulb Zone Mushroom Forest Sparse Reef Underwater Islands
Reginald reginald	Passive	Crag Field Crash Zone Crash Zone Mesas Deep Sparse Reef Grand Reef Grassy Plateaus Grassy Plateaus Caves Primary Containment Facility Aquarium Lost River Mountain Range Caves Mountains Sparse Reef
Sea Treader seatreader	Defensive	Grand Reef Sea Treader's Path Sea Treader's Tunnel Caves
Skyray skyray	Passive	Crash Zone Floating Island Mountain Island Lifepod 5
Spadefish spadefish	Passive	Dunes Deep Sparse Reef Grand Reef Grassy Plateaus Mushroom Forest Mushroom Forest Caves Sea Treader's Path Sea Treader's Tunnel Caves Sparse Reef Underwater Islands
Spinefish spinefish	Passive	Blood Kelp Caves Blood Kelp Zone Lost River Bone Fields Caves

Scavengers & Parasites

Fauna	Attitude	Biome
Amoeboid	Passive	Disease Research Facility Lost River Bone Fields Ghost Canyon Ghost Forest Junction Mountains Corridor
Bleeder bleeder	Aggressive	Aurora Deep Sparse Reef Grassy Plateaus Grassy Plateaus Caves Kelp Forest Kelp Forest Caves Lost River Sparse Reef
Blood Crawler shuttlebug	Aggressive	Blood Kelp Zone Blood Kelp Caves Lost River
Cave Crawler cavecrawler	Aggressive	Aurora Dunes Dunes Caves Floating Island Mountain Island Mountain Range Caves Primary Containment Facility Aquarium Underwater Islands Caves
Floater floater	Passive	Blood Kelp Zone Floating Island Grassy Plateaus Safe Shallows Underwater Islands
Lava Larva lavalarva	Passive	Lava Lakes Inactive Lava Zone Corridor Inactive Lava Zone
Rockgrub rockgrub	Passive	Dunes Caves Dunes Deep Sparse Reef Bulb Zone Bulb Zone Caves Sparse Reef
Shuttlebug jumper	Passive	Crag Field Crash Zone Dunes Deep Sparse Reef Grassy Plateaus Caves Bulb Zone Mountain Range Caves Mountains Mushroom Forest Caves PCF Aquarium Sea Treader's Path Sea Treader's Tunnel Caves Sparse Reef

Possible Expansion Pack Additions

Fauna	Attitude	Biome
Bloom Plankton bloom	Passive	-
Rock Puncher	-	-

Gallery

• 

  Subnautica Fauna Sheet 1

• 

  Subnautica Fauna Sheet 2

Future Plans

• In the future it may be possible to ride certain fauna.

Trivia

• Fauna were intended to posses inherent attributes, that would have caused them to exhibit unique behaviors. These included, e.g., "Fertile" (occasionally lay eggs that can be hatched), "Alpha" (attacked the player if other creatures were killed by the player in the immediate vicinity), "Complex" (specimens take longer to scan), "Greater" (specimens are of larger size and weight), ... Whether these attributes are currently implemented or will be implemented in future updates is unknown.
• As of the Dangerous Creatures update, all fauna have yellow blood. Before this update, fauna had red blood. This is due to the ESRB giving Subnautica a higher rating than expected due to red blood.
• If you hold a small animal in your hand when a carnivorous fauna is about to attack, it will eat the animal out of your hand, instead of attacking you.
• In the very early stages, there was an unused Sandworm that could only be spawned using the console, it would stay in one place under the ground and when the player or an npc was right above it, it would spring up and would do 1 damage but at a very fast rate. It never had any animations, except it shooting out of the ground and back into its hole.