Made of nearly-transparent rubbery green goo, an oozecrawler resembles an 8-foot-long spider. It has no recognizable organs, though a dark nucleus floats at its center.

Oozecrawler (CR 6; XP 2,400)
N Large ooze
Init +1; Senses blindsight 60 ft.; Perception -5
AC 10, touch 10, flat-footed 9
(+1 Dex, -1 size)
hp 59 (7d8+28)
Fort +6, Ref +3, Will -3
Immune ooze traits; Resist acid 10, fire 10
Speed 30 ft., climb 20 ft.
Melee bite +9 (1d8+7 plus poison)
Space 10 ft.; Reach 5 ft.
Special Attack jelly, web (+5 ranged, DC 17, hp 7)
Str 20, Dex 12, Con 19, Int —, Wis 1, Cha 1
Base Atk +5; CMB +11, CMD 22 (can’t be tripped)
Skills Climb +13
Environment underground
Organization solitary
Treasure none
Special Abilities
Absorb (Ex) An oozecrawler that successfully grapples an ochre jelly sucks the jelly into its body. Once per round as a free action, the oozecrawler can inflict 4 points of damage to the jelly and cure itself of a like amount. If the oozecrawler is destroyed, the ochre jelly is freed. An oozecrawler can only hold one jelly at a time.
Jelly (Ex) A creature whose Constitution is reduced to 0 by an oozecrawler’s poison immediately dissolves, becoming a mindless ochre jelly. A greater restoration spell can return a creature so transformed to normal.
Poison (Ex) Bite—injury; save DC 17; frequency 1/round for 6 rounds; effect 1d3 Constitution damage; cure 1 save.
Puddle (Ex) As a standard action, an oozecrawler can dissolve into a 5-foot-radius pool of jelly, or return to its spider form. When in its pool form, the oozecrawler cannot attack or cast webs, but it is also immune to damage from weapons. It takes a successful DC 15 Perception or Knowledge (dungeoneering) check to recognize an oozecrawler in pool form as anything more than a pool of murky water.

Oozecrawlers are gelatinous arachnids that dissolve and consume organic matter. Oozecrawlers survive by feeding on oozes, and are able to reduce even ordinary creatures to puddles of jelly with their poison. Their preferred prey is the ochre jelly, but they can digest almost any sufficiently liquid and amorphous creature. They make their homes in holes, wells, and dark caverns, pooling in gaps where they rest between meals. They can live for several weeks without sustenance, but prolonged hunger causes their bodies to dry out and crack.

Oozecrawlers randomly wander large areas to hunt, searching for living creatures. They begin combat by casting their webs, then trying to bite their opponents. Oozecrawlers absorb ochre jellies they find as quickly as possible, even at risk to themselves. An oozecrawler that is badly injured and cannot heal will dissolve into a pool, trying to prevent further harm.

On Porphyra
Oozecrawlers are found in many large cities of Porphyra, lurking in their vast sewer systems, and are considered by most to be worth the trouble, as they consume things more dangerous than they are. Their spread is rather unchecked in Nor-du-Mag and in certain sectors of G’sho’laa’n’rr.