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Monster · SRD 5.2.1

Giant Octopus

Large beast, unaligned

Armor Class
11
Hit Points
45 (7d10)
Speed
swim 60 ft., 10 ft.
STR
17 (+3)
DEX
13 (+1)
CON
13 (+1)
INT
5 (-3)
WIS
10 (+0)
CHA
4 (-3)
Senses
darkvision 60 ft., passive perception 14
Challenge
1 (200 XP)

Traits

Water Breathing. The octopus can breathe only underwater. It can hold its breath for 1 hour outside water.

Actions

Tentacles. Melee Attack Roll: +5, reach 10 ft. Hit: 10 (2d6 + 3) Bludgeoning damage. If the target is a Medium or smaller creature, it has the Grappled condition (escape DC 13) from all eight tentacles. While Grappled, the target has the Restrained condition.

Large beast, unaligned

Special Abilities

Water Breathing

The octopus can breathe only underwater. It can hold its breath for 1 hour outside water.

Actions

Tentacles

Melee Attack Roll: +5, reach 10 ft. Hit: 10 (2d6 + 3) Bludgeoning damage. If the target is a Medium or smaller creature, it has the Grappled condition (escape DC 13) from all eight tentacles. While Grappled, the target has the Restrained condition.

Reactions

Ink Cloud (1/Day)

Trigger: The octopus takes damage while underwater. Response: The octopus releases ink that fills a 10-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.

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This work includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.

Reformatted and reorganized for presentation on PostRoll; text unmodified.

Licensed under Creative Commons Attribution 4.0 International.

srd-5.2.1 · Version 1.0.0 · Updated Jul 9, 2026