Peeper

The Peeper is a passive life form belonging to the fauna category. It could be considered the mascot of Subnautica.

The Peeper will mostly try to flee from any life form. They are catchable, 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. They are easily identified by their large, bright yellow eyes.

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. Its head is comprised of a yellow, beak-like mouth in 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 propelling it forward, and leaving water trails (visible at night) when it does so.

Behavior
The Peeper is mostly active during the day, often seen jumping out of the water. At night, it seems to rest more though still being somewhat active. It can be heard making chirping-like noises when swimming.

Peepers can be seen being chased by Stalkers, being its preferred prey.

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Trivia

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