Eggs

Eggs are items found in Subnautica and Subnautica: Below Zero. They are the unhatched versions of their respective Fauna. Until they hatch, an egg is labeled as an unknown creature egg, changing to match the name of the creature the egg contained if it hatches inside an Alien Containment. The PDA gives the player this information instantly no matter where they are, without needing to be present to observe which creature came from which egg. After learning this information this way in-game, or from the table below, similar eggs can be identified by the biome it comes from, its appearance, and size.

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 can be destroyed. 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 are destroyed by a Prawn Suit with a punch, so picking them up with the Prawn is risky. Using a Propulsion or Repulsion Cannon on it also destroy them, meaning they can only be picked up by hand or a careful Prawn operator.

Eggs can be found in their species' biomes, but gravity can cause an egg to roll or fall into another biome or cave. An example of this is finding a Stalker egg in the Jellyshroom Cave.

Eggs can be used as fuel for the Bioreactor, though they provide far less energy than a hatched creature.

Subnautica

Normal Eggs

Egg	Size	Description	Location	Energy Value	Item ID
Ampeel egg	4 (2×2)	Ampeels hatch from these.	Blood Kelp Zone Bulb Zone	259	shockeregg
Boneshark egg	4 (2×2)	Bonesharks hatch from these.	Bulb Zone Mushroom Forest Underwater Islands	210	bonesharkegg
Crabsnake egg	4 (2×2)	Crabsnakes hatch from these.	Jellyshroom Cave, inside Jellyshroom	231	crabsnakeegg
Crabsquid egg	4 (2×2)	Crabsquid hatch from these.	Deep Grand Reef Northern Blood Kelp Zone	259	crabsquidegg
Crashfish egg	1 (1x1)	Crashfish hatch from these.	Kelp Forest Caves Safe Shallows Safe Shallows Caves	189	crashegg
Cuddlefish egg	1 (1x1)	Cuddlefish hatch from these.	Deep Grand Reef Degasi Base Dunes Sinkhole Lost River Laboratory Northeastern Mushroom Forest Caves Northwestern Mushroom Forest Caves	210	cutefishegg
Gasopod egg	4 (2×2)	Gasopods hatch from these.	Crash Zone Mesas Dunes Safe Shallows	231	gasopodegg
Jellyray egg	4 (2×2)	Jellyrays hatch from these.	Deep Grand Reef Mushroom Forest Mushroom Forest Caves	119	jellyrayegg
Lava Lizard egg	4 (2×2)	Lava Lizards hatch from these.	Lava Castle Lava Lakes	189	lavalizardegg
Mesmer egg	1 (1x1)	Mesmers hatch from these.	Bulb Zone Bulb Zone Caves Lost River Bone Fields	175	mesmeregg
Rabbit Ray egg	1 (1x1)	Rabbit Rays hatch from these.	Safe Shallows	140	rabbitrayegg
Sand Shark egg	4 (2×2)	Sand sharks hatch from these.	Grassy Plateaus	210	sandsharkegg
Spadefish egg	1 (1x1)	Spadefish hatch from these.	Deep Sparse Reef Grand Reef Grassy Plateaus Caves Underwater Islands Underwater Islands Caves	140	spadefishegg
Stalker egg	4 (2×2)	Stalkers hatch from these.	Kelp Forest	105	stalkeregg

Unique Eggs

Spoiler alert: The following section contains story related material.
Location

Below Zero

Egg	Size	Description	Location	Energy Value (Per Slot)	Incubation Period (Days)	Item ID
Arctic Ray Egg	1	Arctic rays hatch from these.	Sparse Arctic	189	1	`arcticrayegg`
Brinewing Egg	1	Brinewings hatch from these.	Sparse Arctic	105	1	`brinewingegg`
Brute Shark Egg	2	Brute Sharks hatch from these.	Twisty Bridges Caves	231	1.5	`brutesharkegg`
Crashfish Egg	1	Crashfish hatch from these.	Arctic Kelp Caves Crystal Caves Crystal Castle Purple Vents Twisty Bridges Caves	189	1	`crashegg`
Cryptosuchus Egg	2	Cryptosuchus hatch from these.	Thermal Spires Caves	259	2	`cryptosuchusegg`
Glow Whale Egg	3	Glow Whales hatch from these.	Lilypad Islands Lilypad Islands Caves Main Lilypad Islands	280	2	`glowwhaleegg`
Eye Jelly Egg	1x2	Eye Jelly hatch from these.	Glacial Connection	119	1	`jellyfishegg`
Lily Paddler Egg	1	Lily paddlers hatch from these.	Lilypads Crevice	231	1	`lilypaddleregg`
Pengwing Egg	1	Pengwings hatch from these.	Arctic Kelp Forest East Arctic West Arctic	119	1	`penguinegg`
Pinnacarid Egg	1	Pinnacarids hatch from these.	Arctic Kelp Forest	189	1	`pinnacaridegg`
Rock Puncher Egg	2	Rock punchers hatch from these.	Crystal Caves Crystal Caves Fissure Koppa Mining Site	245	1.5	`rockpuncheregg`
Sea Monkey Egg	1	Sea Monkeys hatch from these.	Sea Monkey Nests	210	1	`seamonkeyegg`
Squidshark Egg	2	Squidsharks hatch from these.	Deep Lilypads Cave	259	2	`squidsharkegg`
Titan Holefish Egg	2	Titan holefish hatch from these.	East Arctic West Arctic	259	1.5	`titanholefishegg`
Blue Trivalve Egg	1	Blue Trivalves hatch from these.	Arctic Spires West Arctic	210	1	`trivalveblueegg`
Yellow Trivalve Egg	1	Yellow Trivalves hatch from these.	Deep Lilypads Cave	210	1	`trivalveyellowegg`

Databank Entry

Alien Eggs

<poem>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.</poem>

Source: Pick up Alien Egg

Gallery

<tabber> Normal Eggs=

|-| Unique Eggs=

Sea Dragon Leviathan Egg seen on Sketchfab
Sea Emperor Leviathan Egg
Ghost Leviathan Eggs within the Giant Cove Tree

|-| Concept Art=

Concept Art
More Eggs
Ghost Leviathan Eggs within the Giant Cove Tree
Pinnacarid Eggs - by Alex Ries
Titan Holefish Eggs - by Alex Ries
Titan Holefish Eggs - by Alex Ries
Sea Monkey Eggs - by Alex Ries
Sea Monkey Eggs - by Alex Ries
Sea Monkey Eggs Final - by Alex Ries
Arctic Ray Eggs - by Alex Ries
Brute Shark Eggs - by Alex Ries
Trivalve Eggs - by Alex Ries
Trivalve Eggs Final - by Alex Ries

|-| Models=

Model of Ampeel Egg from Sketchfab
Model of Crashfish Egg from Sketchfab
Model of Gasopod Egg from Sketchfab
Model of Mesmer Egg from Sketchfab
Model of the Sea Dragon Egg from Sketchfab
Model of Sand Shark Egg from Sketchfab
Highpoly model of Crashfish Egg from Sketchfab
Highpoly model of Cuddlefish Egg from Sketchfab
Highpoly model of Lava Lizard Egg from Sketchfab
Highpoly model of the Sea Emperor Leviathan Eggs from Sketchfab.

|-| Other=

Creature Eggs from Trello, day time
Creature Eggs from Trello, night time
A list of creature Eggs, taken from the official Subnautica Twitter feed.

</tabber>

Trivia

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.
- It is noted that the unused egg shares far more resemblance to the Reefback Leviathan than the Spadefish.
The Titan Holefish Egg and Eye Jelly Egg are the only buoyant eggs in the game, rising towards the surface of the water rather than sinking to the seafloor.