Anthozoan Crab

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Anthozoan Crab
Anthozoan Crab.png
EnvironmentSulphurous Sea
Damage0 (Contact)
29 / 42 Expert Mode / 54 Master Mode (Boulder)
Max Life900 / 1800 Expert Mode / 2025 Master Mode
KB Resist96% / 96.4% Expert Mode / 96.8% Master Mode
Inflicts debuffIrradiatedIrradiated
100% chance

Debuff duration3 seconds (Contact)
Debuff tooltipYour skin is burning off
Immune toConfusedPoisonedAcid VenomIrradiatedSulphuric Poisoning
BannerAnthozoan Crab BannerAnthozoan Crab Banner
Cold Bestiary Cold.png-
Water Bestiary Water.pngResistant
Sickness Bestiary Sickness.pngResistant
Electricity Bestiary Electricity.pngVulnerable
Heat Bestiary Heat.pngResistant

The Anthozoan Crab is a Hardmode enemy that spawns in the Sulphurous Sea after the Aquatic Scourge has been defeated. It attacks by quickly running at the player and occasionally stopping to throw Crab Boulderboulders at the player. It will leap backwards when the player gets too close to it.



  • The BestiaryBestiary entry for the Anthozoan Crab: "Though disguised as simple rocks, they are capable of hurling entire boulders at creatures with ease, and will retreat swiftly if approached. Elsewhere, a creature such as this would thrive due to its might; yet in such a hostile environment as this, this much is required merely to survive."
  • Anthozoa refers to a class of marine invertebrates (animals without backbones) that includes sea anemones and corals.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Now has 25% less health and 10% less damage in Master Mode.
    • Nerfed boulder damage from 29 / 58 Expert Mode / 87 Master Mode to 29 / 42 Expert Mode / 54 Master Mode.
    • No longer deals contact damage.
    • Nerfed health from 920 / 1840 Expert Mode / 2760 Master Mode to 900 / 1800 Expert Mode / 2700 Master Mode.
    • Fixed it having an incorrect bestiary offset.
  • Now vulnerable to electricity debuffs, but resistant to water, sickness, and heat debuffs.
  • Now inflicts Irradiated for 3 seconds.