Queen Jellyfish

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Queen Jellyfish
Queen Jellyfish
Queen Jellyfish.png
AI TypeQueen Jellyfish AI
Damage25 / 50
Max Life4000 / 5500
KB Resist100%
Inflicts debuffBubbled.pngBubbled
Debuff duration1 second
Debuff tooltipYou're floating away!
Immune toCrowd Control.pngPoisoned.pngVenom.png
Coins30000*3 Gold Coin.png
Queen Jellyfish (Diverless).png
Queen Jellyfish after defeating it once

Visiting that sea rift again wasn't my best idea... that mutant jellyfish almost ate me whole!

The Diverman

Queen Jellyfish is a Pre-Hardmode boss that must be fought above the ocean waters. It is considered a biome-specific boss for the Ocean biome.

While Queen Jellyfish is alive, its exclusive music In Over Your Head will play.


Queen Jellyfish does not spawn on its own, and requires the player to summon it with a Jellyfish Resonator. It can only be summoned while the player is near the Ocean during the day.


Queen Jellyfish hovers slightly above the player, launching bubbles to attack the player. It summons Royal Jellies to attack the player and uses its tentacles to attack in Expert Mode.


  • Queen Jellyfish will shoot a large slow moving bubble that deals moderate damage and inflicts the Bubbled debuff; flinging the player high into the air.
  • Queen Jellyfish stops and creates a stationary cyclone that sucks the player in; contact with the cyclone can kill the player in a few seconds.

In Expert Mode

  • Upon reaching 45% health, Queen Jellyfish will begin extending tentacles that deal high contact damage.


Image Name Condition
Zealous Jellyfish.png Zealous Jellyfish Always
Spitting Jellyfish.png Spitting Jellyfish Below 90% health
Distracting Jellyfish.png Distracting Jellyfish Below 50% health


  • The Diverman will spawn immediately from Queen Jellyfish upon defeating it for the first time. He can then move in if provided suitable housing.
  • Once defeated, the Cobbler will start selling Water Walking Boots.


  • After defeating Queen Jellyfish once, subsequent appearances of the boss do not have the Diverman NPC inside its head, and subsequent defeats of the boss will not spawn additional Divermen.
  • Queen Jellyfish will take massively increased damage from melee strikes.


For an in depth guide on strategies plus equipment and arena recommendations, see Guide:Queen Jellyfish strategies.


  • This boss is heavily inspired by MetoolDaddy.
  • Despite the fact that her map icon has a crown, Queen Jellyfish does not wear a crown during the battle.


  • Can now drop Deeplight Torches.
  • Properly increased the damage and speed.
    • Increased damage from 20 / 40 to 25 / 50.
    • Decreased life in Expert Mode from 6600 to 5500.
  • Encounter is now more difficult.
  • Introduced.