---
title: "Trilobite Swarm"
obsidianUIMode: preview
noteType: pf2eMonster
cssClasses: pf2e
aliases: "Actor.H8bdn14IdetROh9E" 
tags:
  - pf2e/creature/type/animal
  - pf2e/creature/type/aquatic
  - pf2e/creature/type/swarm
  - pf2eMonster
  - pf2e/creature/level/3
statblock: inline
name: "Trilobite Swarm"
level: 3
license: OGL
---

```statblock
columns: 2
forcecolumns: true
layout: Basic Pathfinder 2e Layout
source: "Pathfinder Bestiary 3"
name: "Trilobite Swarm"
level: "Creature 3"

alignment: ""
size: "Large"
trait_01: [[animal]]
trait_02: [[aquatic]]
trait_03: [[swarm]]
modifier: 9
perception:
  - name: "Perception"
    desc: "+9; Darkvision, Wavesense (Imprecise) 60 Feet"
languages: ""
skills:
  - name: "Skills"
    desc: "Athletics: +8, Stealth: +9, Survival: +7"
abilityMods: [1, 4, 3, -5, 2, 0]
speed:  swim 25 feet
sourcebook: "_Pathfinder Bestiary 3_"
ac: 18
armorclass:
  - name: AC
    desc: "18; __Fort__ +10, __Ref__ +9, __Will__ +7"
hp: 30
health:
  - name: ""
  - name: HP
    desc: "30; __Immunities__  precision,  swarm mind,  grabbed,  prone,  restrained; __Weaknesses__ area damage 5, splash damage 5; __Resistances__ bludgeoning 3, piercing 3, slashing 5"
abilities_top:
  - name: ""

  - name: "[[Bestiary Ability Glossary/Wavesense|Wavesense (Imprecise) 60 feet]]"
    desc: "  This sense allows a monster to feel vibrations caused by movement through a liquid. It's an imprecise sense with a limited range (listed in the ability). Wavesense functions only if monster and the subject are in the same body of liquid, and only if the subject is moving through the liquid."

abilities_mid:
  - name: ""
  - name: "[[Bestiary Ability Glossary/Swarm Mind|Swarm Mind]]"
    desc: "  This monster doesn't have a single mind (typically because it's a swarm of smaller creatures), and is immune to mental effects that target only a specific number of creatures. It is still subject to mental effects that affect all creatures in an area."

attacks:
  - name: ""

  - name: "Clinging Bites"
    desc: "`pf2:1`  The trilobites in the swarm latch onto creatures and gnaw at them. Each enemy in the swarm's space takes 2d6 slashing damage (DC 18 Reflex check save)."
 
```

```encounter-table
name: Trilobite Swarm
creatures:
  - 1: Trilobite Swarm
```



Trilobites typically live in close proximity to others of their kind. On rare occasions, particularly when the most common prey around is larger than what a single trilobite can take down, they form swarms that seem to actively cooperate with each other. These swarms latch onto their prey, and the combined efforts of so many trilobites at once make escape difficult.

* * *

Often overlooked as little more than water-dwelling pests, trilobites are a varied species of arthropods found throughout the seas and oceans of Golarion. So ancient and widespread are these critters that trilobite fossils are as commonly found as living specimens.
