| Property | Details |
|---|---|
| Species | Moliform luna ("Mola-shaped moon") |
| Type | Mobile |
| Category | Foragers |
| Attitude | Passive |
| Biomes | Coral Gardens, Graveyard, Necrolei Hills, Root Canyon |
| Nutrition | Food +15 / Health 0 / Water -5 |
| Bioreactor Fuel | 600 seconds |
| Scan Requirement | Bioscanner |
The Halfmoon is a small, passive, edible lifeform. It provides +15 Food and -5 Water when consumed. The Digestion adaptation is required to safely consume alien lifeforms. A player without this adaptation will not receive its effect and be deducted health. Obtaining a Halfmoon for the first time unlocks the recipes for Cooked Halfmoon and Halfmoon Jerky.
Appearance
The Halfmoon has a body shaped like a crescent moon. The back of the body has a pair of crescent shaped fins and two long tails each with a very small fin towards the end.
The body is predominantly dark pink with a white border that separates it from a dark blue band around the edges of the body. Some white spotting is present on the dorsal half of the body.
The eyes have yellow sclerae, green irises and black, irregularly shaped pupils and a cornified beak that is flush with the body is situated in front. This fish is also a part of the "moon" group of fishes.
Behaviour
The Halfmoon swims around passively, and can sometimes be seen hiding around patches of Sea Whips, and forming schools with Bluemoons and Harvestmoons. Occasionally Halfmoons can be seen gathering in groups around Waxmoons.
Halfmoons will flee from the Player and any Predators. While doing so they will swim horizontally, or swim swiftly left to right in an attempt to avoid the threat.
Recipes
Obtaining a Halfmoon unlocks the following recipes:
- Cooked Halfmoon
- Halfmoon Jerky
Databank Entry
Source: Scan a Halfmoon
Halfmoon (tentatively Moliform luna). Large forage fish which strains plankton from seawater and nibbles at small growth.
- Prey fish: Staple foodstuff for predators-has evolved several flee-and-hide behaviors. Edible, but a fabricator cook is recommended.
- Separate plumbing: A rigid beak protects two valves which draw in seawater for feeding. Spiracles behind the eyes feed water to internal gills for breathing.
- Built for agility: Body packed with neuromasts to detect water flow. Anterior fins have fenestrae (holes) to help them quickly reverse direction. May have evolved to maneuver in tight quarters or in dense schools of other halfmoons.
- Peculiar nervous system: Lacks reafference cancellation-can't distinguish stimuli caused by its own motions from change in the surrounding world. Easily fascinated by bright light-may even experience itself as causing the light. Sometimes behaves as if disoriented, swimming sideways without apparent benefit.
Assessment: tolerable food source.
Gallery
In Game
 Side view of the Halfmoon.
 Front view of the Halfmoon.
 Halfmoon viewed from the top.
 Halfmoon viewed from the back.
Marketing
 Official Subnautica Discord icon for Halloween showing a skeletal Halfmoon
Trivia
- The Halfmoon serves as the mascot for Subnautica 2.
