Octopus, Giant

A storm of tentacles, each twenty feet in length, flails with deadly precision from the leathery body of this gigantic octopus.

Giant Octopus CR 8 (XP 4,800)
N Large animal (aquatic)
Init +6; Senses low-light vision; Perception +8
Defense
AC 18, touch 11, flat-footed 16
(+2 Dex, +7 natural, –1 size)
hp 90 (12d8+36)
Fort +11, Ref +12, Will +7
Defensive Abilities ink cloud (30-foot-radius sphere)
Offense
Speed 20 ft., swim 30 ft., jet 200 ft.
Melee bite +13 (1d8+5 plus poison), 8 tentacles +11 (1d4+2 plus grab)
Space 10 ft.; Reach 10 ft. (20 ft. with tentacle)
Special Attack constrict (tentacle, 1d4+2)
Statistics
Str 20, Dex 15, Con 17, Int 2, Wis 12, Cha 3
Base Atk +9; CMB +15 (+19 grapple); CMD 27 (can't be tripped)
Feats Combat Reflexes, Improved Initiative, Iron Will, Lightning Reflexes, MultiattackB, Skill Focus (Stealth), Stealthy
Skills Escape Artist +18, Perception +8, Stealth +18, Swim +13; Racial Modifiers +10 Escape Artist, +8 Stealth
Ecology
Environment aquatic
Organization solitary
Treasure incidental
Special Abilities
Poison (Ex) Bite—injury; save Fort DC 19; frequency 1/round for 6 rounds; effect 1d3 Str; cure 2 saves.

The giant octopus is a true monster capable of catching and eating sharks, humans, or anything else it can grab with its tentacles.