Eggs are items found in Subnautica and Subnautica: Below Zero. They are the unhatched versions of their respective Fauna. Until they hatch, the egg will be labeled as an unknown creature egg, changing to match the name of the creature the egg contained once it hatches. An egg can be identified by where it was collected, its appearance, and its size (see table below).
Almost all Eggs can be placed inside an Alien Containment. After placing an egg inside an Alien Containment, it will stay where it was placed. After one to three in-game days, the egg will hatch into a smaller version of its respective species. The hatched creature will slowly grow until it is moderately-sized or can fit within the confines of the Alien Containment. They can die inside of the aquarium, however, if the aquarium's population limit is surpassed.
Baby creatures can be picked up and placed outside in the water, where they will instantly become fully grown. Most normally aggressive creatures will not attack the player if hatched in the Alien Containment, allowing the player to scan it even after it is released in the wild. The exceptions are the Ampeel, as its electric shocks still apply damage, and the Crabsquid.
Eggs are also capable of being destroyed before they hatch. Hits with a knife will slice open the egg, resulting in no creature being spawned. Crashfish explosions can destroy their own eggs and habitat if they are too close. They can also be destroyed by a Prawn Suit with a single punch. Blasting an Egg using a Propulsion or Repulsion Cannon will also result in their demise.
Eggs can be found in their species' respective Biomes, however, due to the game's physics in the game engine, an egg can roll into another biome or cave. An example of this is finding a Stalker egg in the Jellyshroom Cave.
Eggs can also be used as fuel for the Bioreactor, though they provide far less energy than a hatched creature.
More information and animations can be found on Trello.
|Egg||Size||Description||Location||Energy Value||Item ID|
|4 (2×2)||Ampeels hatch from these.||259||shockeregg|
|Boneshark egg||4 (2×2)||Bonesharks hatch from these.||210||bonesharkegg|
|Crabsnake egg||4 (2×2)||Crabsnakes hatch from these.||231||crabsnakeegg|
|Crabsquid egg||4 (2×2)||Crabsquid hatch from these.||259||crabsquidegg|
|Crashfish egg||1||Crashfish hatch from these.||189||crashegg|
|Cuddlefish egg||1||Cuddlefish hatch from these.||210||cutefishegg|
|Gasopod egg||4 (2×2)||Gasopods hatch from these.||231||gasopodegg|
|Jellyray egg||4 (2×2)||Jellyrays hatch from these.||119||jellyrayegg|
|Lava Lizard egg||4 (2×2)||Lava Lizards hatch from these.||189||lavalizardegg|
|Mesmer egg||1||Mesmers hatch from these.||175||mesmeregg|
|Rabbit Ray egg||1||Rabbit Rays hatch from these.||140||rabbitrayegg|
|Sand Shark egg||4 (2×2)||Sand sharks hatch from these.||210||sandsharkegg|
|Spadefish egg||1||Spadefish hatch from these.||140||spadefishegg|
|Stalker egg||4 (2×2)||Stalkers hatch from these.||105||stalkeregg|
Spoiler alert: The following section contains story related material.
These eggs are unobtainable.
|Egg||Size||Description||Location||Energy Value (Per Slot)||Incubation Period (Days)||Item ID|
|Arctic Ray Egg||1||Arctic rays hatch from these.||189||1|
|Brinewing Egg||1||Brinewings hatch from these.||105||1|
|Brute Shark Egg||2||Brute Sharks hatch from these.||231||1.5|
|Crashfish Egg||1||Crashfish hatch from these.||189||1|
|Cryptosuchus Egg||2||Cryptosuchus hatch from these.||259||2|
|Glow Whale Egg||3||Glow Whales hatch from these.||280||2|
|Eye Jelly Egg||1x2||Eye Jelly hatch from these.||119||1|
|Lily Paddler Egg||1||Lily paddlers hatch from these.||231||1|
|Pengwing Egg||1||Pengwings hatch from these.||119||1|
|Pinnacarid Egg||1||Pinnacarids hatch from these.||189||1|
|Rock Puncher Egg||2||Rock punchers hatch from these.||245||1.5|
|Sea Monkey Egg||1||Sea Monkeys hatch from these.||210||1|
|Squidshark Egg||2||Squidsharks hatch from these.||259||2|
|Titan Holefish Egg||2||Titan holefish hatch from these.||259||1.5|
|Blue Trivalve Egg||1||Blue Trivalves hatch from these.||210||1|
|Yellow Trivalve Egg||1||Yellow Trivalves hatch from these.||210||1|
Evidence suggests that a substantial number, if not all of the local species reproduce through egg-laying. Eggs can be found resting on the seafloor, buried beneath detritus, or even wedged into cracks in the rock.
Different species likely favor different biomes as their nesting grounds. Eggs discovered in the wild are in some form of natural stasis, likely awaiting ideal conditions in which to hatch, or the delivery of some vital enzyme which will kick start the process.
It is impossible to calculate the species of the egg from the exterior, however it may be possible to stimulate a hatching response if an egg is relocated to a suitable alien containment unit.
|Source: Pick up Alien Egg|
- The bulbs of the Giant Cove Tree in the Lost River are actually Ghost Leviathan Eggs, but can't be interacted with.
- Sea Dragon Leviathan Eggs used to share the same model of the Crabsquid Egg.
- The Spadefish egg shares the model of the unused Reefback Leviathan Egg, an egg that can only be obtained through Console Commands.
- The Titan Holefish Egg is the only buoyant egg, rising towards the surface of the water rather than sinking to the seafloor.