Sea Worm, King Ragworm

King Ragworm CR 13

XP 25,600
N Gargantuan vermin (aquatic)
Init +9; Senses darkvision 60 ft., tremorsense 60 ft.; Perception +3

DEFENSE

AC 28, touch 15, flat-footed 19 (+9 Dex, +13 natural, –4 size)
hp 187 (15d8+120)
Fort +17, Ref +14, Will +8
Immune mind-affecting effects

OFFENSE

Speed 30 ft., burrow 20 ft., swim 40 ft.
Melee bite +20 (2d8+13/19–20 plus grab), slam +20 (2d6+13 plus poison), tail slap +15 (2d8+6 plus poison)
Space 20 ft.; Reach 20 ft. (25 ft. with bite)
Special Attacks reversible pharynx, fast swallow, poison, swallow whole (4d6 bludgeoning damage, AC 16, 18 hp), vortex attack

STATISTICS

Str 37, Dex 28, Con 27, Int —, Wis 17, Cha 2
Base Atk +11; CMB +28; CMD 47 (can’t be tripped)
Feats Improved Critical B (bite)
Skills Swim +21
SQ compression

SPECIAL ABILITIES

Reversible Pharynx (Ex)

The king ragworm’s jaws sit deep within its throat. When making a bite attack, the ragworm turns its throat inside out and extends its jaws with surprising speed. This not only extends the ragworm’s reach with its bite attack, but it also gives it a +4 bonus on attack rolls with its bite during surprise rounds.

Poison (Ex)

Slam or tail slap—injury; save Fort DC 25; frequency 1/round for 6 rounds; effect 1d4 Dex damage and 1d2 Con damage; cure 2 consecutive saves. The save DC is Constitution-based.

Vortex Attack (Ex)

Three times per day as a standard action, a king ragworm can undulate its body inside its burrow to create a vortex, drawing anything within a 15-foot cone toward the burrow’s entrance. Large and smaller creatures caught in this vortex must succeed at a DC 26 Reflex save or be pulled into the ragworm’s burrow, potentially provoking attacks of opportunity. Attacks of opportunity caused by this ability can’t be avoided with Acrobatics (though attacks of opportunity provoked in other ways, such as by moving out of one of the ragworm’s threatened squares, can be avoided as normal). The save DC is Dexterity-based.