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Giant Octopus

Challenge1

Rules source: Monster Manual (2025) · CR: 1 · Type: Beast

Combat statistics

  • Armor Class: 11
  • Hit Points: 45 (7d10 + 7)
  • Speed: Walk 10 ft., Swim 60 ft.
  • Initiative: +1 (11)
  • Challenge: 1 (200 XP)
  • Skills: Perception +4, Stealth +5
  • Senses: Darkvision 60 ft., Passive perception 14
  • Languages: None
  • Proficiency Bonus: +2
  • Damage resistances: None listed
  • Damage vulnerabilities: None listed
  • Damage immunities: None listed
  • Condition immunities: None listed
Ability Score (modifier) Saving throw
STR 17 (+3) +3
DEX 13 (+1) +1
CON 13 (+1) +1
INT 5 (-3) -3
WIS 10 (+0) +0
CHA 4 (-3) -3

Revised rules text

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.

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.

Reference from your core rulebook

The links below open the original rulebook pages for the complete printed stat block, including traits, actions, spellcasting, reactions, and usage limits. The printed block is authoritative if searchable text elsewhere on this page differs.

Monster Manual (2025) — PDF page 361

Open the original rulebook — PDF page 361 — source PDF is not included in this player reference.

Printed book page: 358.

Sources

  • Your supplied Monster Manual (2025) — source PDF is not included in this player reference. — verified local reference
  • Monster Manual — original reference dataset (legacy source)
  • SRD 5.2.1 (external reference) — complete revised rules block
  • Structured SRD transcription (external reference) — searchable text; printed block remains authoritative

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Original campaign appearances and variants: Giant Octopus