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Giant Octopus

Large Beast · · CR 1

  • Beast
  • Large
  • Tier 1

Giant Octopus, CR 1, fills the large beast role with unaligned disposition. Encounter regions: underwater. Sourced from Monster Manual (5e 2014) and Monster Manual (5.5e 2024).

Stat Block

Challenge Rating
1
Type
Beast
Size
Large
Alignment
Speed
Habitats
Underwater
Sources
Monster Manual (5e 2014), Monster Manual (5.5e 2024)

Ecology

Giant octopuses dwell in temperate seas, brackish estuaries, and flooded sea caves, preferring rocky bottoms with abundant crevices. They prey on fish, crabs, and large reef predators, occasionally taking sleeping seals or unwary divers. They are solitary except during the brief mating season, after which females seal themselves into a den to guard eggs and starve to death once the young hatch. Lifespan is short.

Behaviour

Giant octopuses are intelligent for invertebrates, capable of solving puzzles, opening jars, and recognizing individual humanoids. They use camouflage for both ambush and escape, and squirt ink as a defense against pursuers. They are curious about shiny objects, hoarding coins, gemstones, and metal trinkets in their dens. They are not malicious but defend territory aggressively. Sailors fear them as omens of shipwreck.

Origin

Giant octopuses are oversized natural cephalopods, common across the world's seas. Some sages believe they descend from a primordial sea-god's discarded children, swept into the mortal oceans during the cataclysm that broke the first continent. Sahuagin and merfolk tell of a great matriarch octopus called the Drowner, mother of all giant kraken-spawn, who still sleeps in the deepest trenches dreaming of warm shallows.

CR 1 monstersAll BeastsUnderwater

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Frequently Asked Questions about Giant Octopus

What is the challenge rating of Giant Octopus?
Giant Octopus is rated CR 1. The rating fits levels 1-5.
What type of creature is Giant Octopus?
The bestiary type for Giant Octopus is beast, large size.
Where does Giant Octopus live?
You'll find Giant Octopus in Underwater according to the bestiary entry.
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Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/giant-octopus. Point a phone camera at this code to open the Giant Octopus page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.