From Pathfinder Bestiary 2, which isn't enabled.

Reef Octopus

CREATURE 1

SMALL ANIMAL AQUATIC

The common reef octopus is a risky but valuable catch for coastal fishers.

Perception +7; low-light vision

Skills Athletics +6, Stealth +9

Str +1, Dex +4, Con +1, Int -4, Wis +1, Cha +0

AC 17; Fort +6, Ref +9, Will +7

HP 20; Resistances cold 3

Speed 10 feet, swim 30 feet

Melee Beak +9 (finesse, unarmed), Damage 1d10+1 piercing plus Reef Octopus Venom

Melee Arm +9 (agile, finesse), Damage 1d6+1 bludgeoning plus Grab

Camouflage

The reef octopus can change the color of its skin to Hide even if it doesn't have cover.

Ink Cloud

The reef octopus emits a cloud of dark-brown ink in a 10-foot emanation. This cloud has no effect outside of water. Creatures inside the cloud are Hidden and can't use their sense of smell. The cloud dissipates after 1 minute.

The octopus can't use Ink Cloud again for 2d6 rounds.

Jet

The reef octopus moves up to 80 feet in a straight line through the water without triggering reactions.

Reef Octopus Venom (poison)

Saving Throw DC 17 Fortitude

Maximum Duration 6 rounds

Stage 1 1d4 poison damage and Off-Guard (1 round)

Stage 2 1d6 poison damage and Off-Guard (1 round)

Stage 3 1d8 poison damage and Off-Guard (1 round)

Writhing Arms

The reef octopus makes up to four arm Strikes with different arms, each against a different target. These attacks count toward the octopus's multiple attack penalty, but the multiple attack penalty doesn't increase until after it makes all of its attacks.

Grab

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained

Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.

Pathfinder Bestiary 2OGL