Small Beast, Unaligned
AC12
Initiative+2 (12)
HP3 (1d6)
SpeedWalk 5 ft., Swim 30 ft.
STR4
MOD-3
SAVE-3
DEX15
MOD+2
SAVE+2
CON11
MOD+0
SAVE+0
INT3
MOD-4
SAVE-4
WIS10
MOD+0
SAVE+0
CHA4
MOD-3
SAVE-3
SkillsPerception +2, Stealth +6
SensesDarkvision 30 ft.; Passive Perception 12
LanguagesNone
CRCR 0 (XP 10; PB +2)
Traits
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. Melee Attack Roll: +4, reach 5 ft. Hit: 1 Bludgeoning damage.
Reactions
Ink Cloud (1/Day). Trigger: A creature ends its turn within 5 feet of the octopus while underwater. Response: 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.
Found on p.365 of MM2025 (Free Rules)