Sea Anemone, Siren’s Bed

This enormous polyp is crowned with bright red-and-blue striped tentacles. A long, thin stinger darts from the center.

Siren’s Bed Anemone CR 9

XP 6,400
N Gargantuan vermin (aquatic)
Init +4; Senses blindsight 60 ft.; Perception +1

DEFENSE

AC 23, touch 10, flat-footed 19 (+4 Dex, +13 natural, –4 size)
hp 119 (14d8+56)
Fort +13, Ref +8, Will +5
Defensive Abilities amorphous; Immune gaze attacks, mind-affecting effects, poison, sonic, vision-based attacks

OFFENSE

Speed 10 ft.
Melee bite +16 (2d8+10 plus grab), sting +16 (2d4+10 plus poison), tentacles +11 (2d6+5 plus grab and poison)
Space 20 ft.; Reach 20 ft. (40 ft. with sting)
Special Attacks constrict (2d6+10), shriek, swallow whole (4d6+15 bludgeoning damage, AC 16, 11 hp)

STATISTICS

Str 30, Dex 19, Con 18, Int —, Wis 13, Cha 3
Base Atk +10; CMB +24; CMD 38 (can’t be tripped)
SQ anchored, sightless (see coffin anemone)

SPECIAL ABILITIES

Poison (Ex)

Sting or tentacles—injury; save Fort DC 21; frequency 1/round for 6 rounds; effect 1d4 Dex damage; cure 2 consecutive saves.

Shriek (Ex)

Once per minute as a swift action, a siren’s bed can emit a powerful shriek in 60-foot-radius burst centered on itself. All creatures within the area must succeed at a DC 21 Fortitude save or be staggered and deafened for 1d4 rounds.

This is a sonic effect. The save is Constitution-based.

ECOLOGY

Environment warm coastlines or oceans
Organization solitary, pair, or choir (3–6)
Treasure incidental

This massive anemone can emit a deafening screech that can be heard for miles under the water.