Crab, Shipwrecker

Gargantuan beast, unaligned

Armor Class 18 (natural armor) Hit 297 (17d20+119)
Speed 30 ft., swim 40 ft.

24 (+7) 16 (+3) 24 (+7) 2 (-4) 14 (+2) 5 (-3)

Saving Throws Con +12, Str +12
Skills Athletics +12, Perception +7
Senses darkvision 60 ft., passive Perception 17
Challenge 16 (15,000 XP)

Special Traits

  • Angled Carapace. Ranged weapon attacks made with non-magical weapons have disadvantage against the shipwrecker crab.
  • Improved Critical. The shipwrecker crab scores a critical hit on a roll of 19 or 20.
  • Siege Monster. The shipwrecker crab deals double damage to objects and structures.
  • Water Breathing. The shipwrecker crab can only breathe underwater.


  • Multiattack. The shipwrecker crab makes two claw attacks.
  • Claw. Melee Weapon Attack: +9 to hit, 20 ft. reach, one target. Hit: 51 (8d10 + 7) bludgeoning damage.


A bane to all vessels traveling the seas, shipwrecker crabs can ruin the career of a merchant captain in minutes, destroying her ship, dumping its cargo into the waters below, and plucking her drowning crew from the wreckage for food. Shipwrecker crabs live most of their lives in shallow seas, coming near the coast or surface to hunt and feed. A shipwrecker crab measures 50 feet across, with two long arms capable of extending a further 30 feet each and weighs 6 tons.

Section 15: Copyright Notice

Sea Monsters (5E) © 2021, Legendary Games; Authors Michael Ritter, Michael “solomani” Mifsud, Robert J. Grady, Mark Hart, Jeff Ibach, Alex Riggs, Scott D. Young, Jeff Lee, Matt Kimmel, and Jason Nelson.

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