Trilobite
CR: 1/4 XP: 100
N Tiny vermin (aquatic)
Init: +2 Senses: darkvision 30 ft. Perception: +4
Defense
AC: 15, touch 14, flat-footed 13 (+2 Dex, +1 natural, +2 size)
hp: 5 (1d8+1)
Fort: +3 Ref: +2 Will: +0
Immune: mind-affecting effects
Offense
Speed: 20 ft., swim 30 ft.
Melee: bite +4 (1d3–2)
Space: 2–1/2 ft. Reach: 0 ft.
Statistics
Str: 7 Dex: 15 Con: 12 Int: — Wis: 11 Cha: 2
Base Atk: +0 CMB: +0 CMD: 8
Feats: Weapon Finesse
Skills: Perception +4, Swim +10, Racial Modifiers +4 Perception
SQ: curl, water dependency
Ecology
Environment: any oceans
Organization: solitary, pair, group (2–12)
Treasure: none
Description
Curl (Ex) As a standard action, a trilobite can curl into a ball, increasing its natural armor bonus by 2 but preventing it from taking any move actions. Uncurling is a standard action. Ancient arthropods adapted to scavenging the ocean floor, trilobites have both resilient exteriors and keen senses honed for use in the lightless depths of the sea, and are known for curling into balls to protect themselves.