Nautilus

Spawning
Spawns in the lower Protolife areas.

Appearance
Appears to be a hovering, mechanical life-form.

Behavior
They don't tend to attack until you either attack one or come within an extremely close range. They attack by floating towards the player and firing projectiles at a slow but consistant rate. These can be dangerous because the projectiles ignore shields and damage health directly.

Abilities
They're capable of flight and their projectiles ignore shields.

Combat
They don't perform any evasive maneuvers and aside from staying within a firing range, they aren't especially aggressive. It usually takes 2-3 clips of most Mark I Weapons to eliminate one.

Defense
Moving right before they shoot can cause them to miss. A well-timed Jump/Jetpack upward move can often evade their shots. You can also use terrain (Including blocks you place yourself!) to block their shots.

Trivia
The nautilus is an ocean creature for more information see Nautilus.