Peeper

The Peeper is a small, yet fast, passive fauna species. It could be considered the mascot of Subnautica. It is easily identified by its large, bright yellow eyes.

The Peeper will try to flee from most life forms bigger than itself, such as Stalkers or the player. They can be caught, though their speed allows them to easily outrun a poorly equipped player. With the use of a Gravsphere, Seaglide, Stasis Rifle or Propulsion Cannon, they can be easily captured.

Cooked Peepers have above average Food properties. For this reason, they are very useful for players in Survival mode, and are always worth the catch.

Appearance
The Peeper is small, with its body being mainly a bluish hue, turning more greenish near the tail. Its head is comprised of a yellow, beak-like mouth on the front and a pair of large eyes situated on both sides of the head. The eyes feature black pupils with bright bioluminescent yellow sclerae and brown irises. It is also noteworthy that the Peeper has eyelids.

It has a small caudal fin. There are three holes running along on each side of the body that resemble gills. It has two tube-like organs that extend from its body to the top and the bottom of its head, resembling backward-facing jets, that propel it forward, leaving water trails (visible at night) when it does so.

Behavior
The Peeper is mostly active during the day, and can often be seen jumping out of the water. At night, it seems to rest more, though it is still somewhat active. When chased by the player, the Peeper may sometimes shut its eyes, making it harder to be seen - it often does so at night, making it near impossible to find and catch in the darkness. It can be heard making chirping-like noises when swimming.

Peepers can sometimes be seen being chased by Stalkers, as they are their preferred prey.

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Trivia

 * In concept art, the Peeper's name was Aqua-Bird.
 * The Oculus, which resides in the Jelly Shroom Caves, is a subspecies of the Peeper.