The hatched creature will slowly grow until it is moderately-sized or can fit within the confines of the Alien Containment. After one to three in-game days, the egg will hatch into a smaller version of its respective species.

After placing an egg inside an Alien Containment, it will stay where it was placed.

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.Īlmost all eggs can be placed 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. 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. They are the unhatched versions of their respective Fauna. Eggs are items found in Subnautica and Subnautica: Below Zero.