Octopus

Small beast, Unaligned

Armor Class 12

Hit Points 3 (1d6)

Speed 5 ft., swim 30 ft.

STR 4 (-3)

DEX 15 (+2)

CON 11 (+0)

INT 3 (-4)

WIS 10 (+0)

CHA 4 (-3)

Skills Perception +2, Stealth +6

Senses Darkvision 30 ft., passive Perception 12

Languages —

Challenge 0

Compression. The octopus can move through a space as narrow as 1 inch without expending extra movement to do so.

Water Breathing. The octopus can breathe only underwater.

Actions

Tentacles. m +4, reach 5 ft. Hit: 1 Bludgeoning damage.

Reactions

Ink Cloud (1/Day). A creature ends its turn within 5 feet of the octopus while underwater. The octopus releases ink that fills a 5-foot Cube centered on itself, and the octopus moves up to its Swim Speed. The Cube is Heavily Obscured for 1 minute or until a strong current or similar effect disperses the ink.

Source

Monster Manual (2024), p. 365