Mantis Shrimp, Giant

Family: Shrimp

Large beast, unaligned

Armor Class 16 (carapace)
Hit Points 150 (12d12 + 72)
Speed 30 ft., swim 40 ft.

19 (+4) 16 (+3) 18 (+4) 4 (-3) 13 (+1) 12 (+1)

Saving Throws Str +8, Con +8
Skills Perception +9
Damage Resistances thunder
Senses blindsight 60 ft., darkvision 60 ft., passive Perception 19
Challenge 9 (5,000 XP)


  • Clawed Terror. All creatures that take thunder damage from the giant mantis shrimp’s pincer attack must attempt a DC 16 Constitution saving throw or be stunned for 1 round. They must then attempt a DC 16 Constitution saving throw or be blinded until the start of the giant mantis shrimp’s next turn. A successful saving throw renders a creature immune to the corresponding condition from the giant mantis shrimp’s pincer attacks until the beginning of a giant mantis shrimp’s next turn.
  • Shattering Strike. A giant mantis shrimp deals double damage to objects, and gains advantage on attacks rolls against armored targets.
  • Uncanny Eyesight. A giant mantis shrimp gains double its normal proficiency bonus on Perception checks, and it has advantage on saving throws against illusions. A giant mantis shrimp can see hidden or invisible creatures within 10 feet.


  • Multiattack. A giant mantis shrimp makes 3 pincer attacks.
  • Pincer. Melee Weapon Attack: +8 to hit, reach 10 ft., Hit: 14 (3d6 + 4) bludgeoning damage. All creatures within 10 ft. of a pincer attack take 7 (2d6) thunder damage.


Though the colorful shells of giant mantis shrimp are beautiful to behold, the sight of one often means death. These apex predators resemble brightly colored lobsters with oversized pincers. They prowl tide pools and coastal shallows, competing for territory with sharks, eels, and giant. Their pincer strike is so fast it creates light, heat, and a stunning shockwave, and its multifaceted eyes can see into impossible spectrums that allow them to easily spot creatures trying to hide with camouflage. A typical giant mantis shrimp grows to 4 feet high and 6 feet long and weighs around 200 pounds.

Reefhammer. Incredibly rare, these gigantic mantis shrimp prowl the seafloor and vast reefs, devouring everything in their path and sometimes shattering entire reefs just to pick through the ruins for prey hiding within.

Section 15: Copyright Notice

Latin American Monsters (5E) © 2021, Legendary Games; Authors Miguel Colon, Ismael Alvarez, Robert J. Grady, Jason Nelson.

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