Isopod, Giant

This many-legged crustacean is the size of a sewer rat, its body protected by several thick shell-like plates.

Giant Isopod CR 1/8

XP 50
N Tiny vermin (aquatic)
Init –1; Senses darkvision 60 ft., low-light vision; Perception +0


AC 14, touch 11, flat-footed 14 (–1 Dex, +3 natural, +2 size)
hp 6 (1d8+2)
Fort +4, Ref –1, Will +0
Defensive Abilities curl; Immune mind-affecting effects


Speed 20 ft., swim 10 ft.
Melee bite –1 (1d3–3)
Space 2-1/2 ft.; Reach 0 ft.


Str 5, Dex 9, Con 14, Int —, Wis 11, Cha 2
Base Atk +0; CMB –3; CMD 4 (can’t be tripped)
Skills Swim +5


Curl (Ex)

As a standard action, a giant isopod can curl into a ball, increasing its natural armor bonus by +2 but preventing it from taking any move actions. Uncurling is also a standard action.


Environment any ocean
Organization solitary, pair, or scuttle (3–20)
Treasure none

Giant isopods are carnivorous scavengers that scour the ocean’s floor. They vaguely resemble the common wood louse in appearance, though they can grow to be up to 2-1/2 feet long and weigh nearly 4 pounds. Their unusual size and insectile appearance cause many humanoids to be wary of them, despite their relative harmlessness.

Section 15: Copyright Notice

Pathfinder Roleplaying Game Ultimate Wilderness © 2017, Paizo Inc.; Authors: Alexander Augunas, John Bennett, Robert Brookes, John Compton, Dan Dillon, Steven T. Helt, Thurston Hillman, Eric Hindley, Mikko Kallio, Jason Keeley, Isabelle Lee, Jason Nelson, Stephen Radney-MacFarland, Alex Riggs, David N. Ross, David Schwartz, Mark Seifter, Jeffery Swank, and Linda Zayas-Palmer.

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