Calamity Mod Wiki
Leviathan and Anahita
Leviathan and Anahita.png
KB Resist100%
Coins 30 Gold Coin.png

Leviathan Trophy.png "...Two genetic misfits outcast from their homes..." Anahita Trophy.png

If you were looking for something other than Anahita or the Leviathan, see Anahita (disambiguation) and Leviathan (disambiguation).

The Leviathan and Anahita are a duo of bosses that can be fought at any point in the game, but is intended to be fought during Hardmode. It is recommended that the player acquire post-Plantera equipment before engaging the bosses, as they are very challenging and require the management of two boss-tier enemies with several summons all at once.


To begin the boss fight, the player has to kill the ??? in the Ocean. Doing this will spawn just Anahita at first, and The Leviathan herself will only spawn once Anahita reaches 40% health.


The Leviathan
AI TypeThe Leviathan AI
Damage90 / 216 / 240 / 252 (Contact)
88 / 140 / 160 / 172 (Meteor)
Max Life60,560 / 96,800 / 116,096
80 (when enraged)
KB Resist100%
Inflicts debuffBleedingBleeding
100% chance
Debuff duration4 seconds (Contact)
Debuff tooltipCannot regenerate life
Inflicts debuffArmor CrunchArmor Crunch
100% chance
Debuff duration5 seconds (Meteor)
Debuff tooltipYour armor is shredded
Immune toPearl AuraConfused
AI TypeAnahita AI
Damage70 / 112 / 136 / 144 (Contact)
105 / 168 / 204 / 216 (Charging contact)
72 / 116 / 136 / 144 (Ice mist, Water spears & Treble clefs)
Max Life34,700 / 55,520 / 66,560
37 (when enraged above half health)
50 (when enraged below half health)
KB Resist100%
Immune toConfusedPearl AuraGlacial StateExo FreezeFrostburn


This boss encounter is made up of two individual bosses: Anahita and The Leviathan. Both enemies must be defeated to count as a full kill and receive loot. Only Anahita is summoned at the start, but after she reaches 40% of her health, The Leviathan is summoned after a brief animation. She stops attacking the player and becomes invulnerable until The Leviathan reaches 40% health. If the player leaves the Ocean biome during the battle, the bosses will enter an enraged state: Anahita moves faster, summons projectiles more frequently, and her projectiles move faster, while The Leviathan's movement speed and meteor speed are massively increased.


  • She hovers above the player while periodically performing one of three attacks, all of them converging on the player's location.
    • Summons 8 water spears, which continue to travel after converging.
    • Summons 3 icicles, which home in on the player after converging.
    • Summons 6 treble clefs which move slower, linger for an extended period of time.
    • Below 70% health, she summons more projectiles during these attacks. This change is reverted while The Leviathan is alive and Anahita is above 20% health.
  • She additionally can summon Detonating Bubbles that inflict the Wet debuff for 7 seconds.
  • She generates an ice shield at 100%, 70%, and 40% health, rendering her invulnerable to damage until it's destroyed.
    • The ice shield blocks non-minion piercing projectiles.
  • When below 70% health, she will occasionally charge at the player 3 times.
    • She won't perform this attack if she is above 20% health and The Leviathan is alive.
  • She becomes enraged if The Leviathan is defeated first.

The Leviathan

  • She mainly stays on one side of the player while cycling through her attacks, switching sides if the player moves around her.
  • She fires meteors at the player, which inflict the Armor Crunch debuff.
  • She summons Aquatic Aberrations to attack the player.
  • When below 40% / 70% health, she pauses for a few moments before aligning with the player horizontally then charging at them.
    • She won't perform this attack while she is above 20% health and Anahita is alive.
  • She becomes enraged if Anahita is defeated first.

In Expert Mode

  • Anahita is much more aggressive and deals more damage.
  • The Leviathan can now charge at the player below 70% HP.

In Revengeance Mode

  • The Leviathan shoots faster.

In Death Mode

  • When the ??? is killed, the Leviathan will be immediately summoned while Anahita becomes passive. Anahita will become active and join the battle once the Leviathan reaches 70% HP.
  • The Leviathan and Anahita can use any of their attacks regardless of current HP or whether the other is currently active.
  • The Leviathan charges 3 times in a row.


Ice Shield
Ice Shield.png
TypeFlying Enemy
AI TypeIce Shield AI
Damage55 / 110 / 126 / 136
Max Life650 / 1300
KB Resist10%
Inflicts debuffFrostburnFrostburn
100% chance
Debuff duration4 seconds
Debuff tooltipIt's either really hot or really cold. Either way it REALLY hurts
Immune toConfusedPearl AuraGlacial StateExo FreezeFrostburn
Image Name Condition
Detonating Bubble Detonating Bubble Anahita is active
Aquatic Aberration Aquatic Aberration The Leviathan is active



  • Even though the summon appears even at the very beginning of the game, it's not recommended to fight this boss until later in Hardmode.
  • Anahita's frost shield deletes projectiles on contact. This means some projectiles will fail to function correctly, such as the SHPC's primary fire.
  • In the possible, though unlikely circumstance that the Leviathan and Anahita are lured to the Sulphurous Sea biome, it will be considered as the Ocean and they will not be enraged.
  • Both Anahita and the Leviathan will each drop 5-15 Greater Healing Potions separately when killed.
  • When players have the Wet debuff, Anahita's projectiles have a lower velocity.
  • Even with Anahita's many resistances, they are neither immune to the Poisoned nor the On Fire! debuffs.
  • You can stop Anahita and ??? from spawning by using Sirenproof Earmuffs


For more elaborate strategies on defeating Leviathan and Anahita, including weapon and arena recommendations, see Guide:Leviathan and Anahita strategies.
  • Making 3-4 layers of platforms that are the whole length of the Ocean may make it easier to dodge their attacks.
  • Once the Leviathan has reached 50% of her health, care should be taken to be aware of where she is as she will start charging the player. Should she be on the left or right side of the player, it is important to dodge it either moving down or above where the Leviathan is going.
  • Using Water Candle, Chaos Candle, Battle, and Zerg buffs in combination will make ??? spawn over 5x more often, making the bosses much more readily available.
    • This will also increase the spawn rate of ocean enemies, so be cautious.


  • Anahita's theme is Siren's War Cry, which was composed by the artist DM DOKURO.
    • Siren's War Cry is the only Calamity theme to not be featured in its own video, instead only appearing in an "Extended" version alongside the other themes for Leviathan and Anahita. This is due to the fact that Siren's War Cry was made sometime after the other two themes, in response to a rework to the fight which now included Anahita being fought on her own.
  • When The Leviathan appears, the theme changes to Forbidden Lullaby, which was also composed by DM DOKURO.
    • If the Calamity Music add-on mod is disabled, Boss 3 will play instead for Leviathan and Anahita.
  • The dual nature of the fight took inspiration from the Ornstein and Smough fight from Dark Souls.
  • In previous versions of the mod, Anahita had two color schemes with one randomly being chosen upon her spawning. Some of her features would be either greener or more blue. This was the reasoning for the Aquatic Heart having two variants based on color.
  • Originally, Anahita and Leviathan shared their lore entry.
  • Anahita was previously named The Siren. Prior to that, she was known as the Siren Lure.
  • If the Boss Checklist Mod is installed, their unique despawn message will be "The aquatic entities sink back beneath the ocean depths."


The Leviathan

In the obsidian waters of ancient times, the Leviathan’s amber bioluminescence marked her coming, and yet escape was hopeless, for at that point her jaws would have already been around the unfortunate animal. She was an alpha predator, the largest of her kind; and perhaps the last, for such growth was barely supported in the world’s oceans even then. So for many years, perhaps centuries, she drifted in sunless waters devouring prey as needed in search of a mate. It was a lonely, hopeless endeavor and a state of existence which did not befit the queen of the depths. So in the empty world in which time did not seem to pass, eventually the creature which once devoured and hunted to her heart’s content, became prey herself to weakness in her older age and unmanageable bulk. She resigned to resting upon the sediment of the ocean floor, and remained there for many years in a deep, nearly comatose slumber. Her hibernation gnawed away at the vast reserves of muscle and fat as she atrophied. In time, one would have even thought her to be a geological structure of the seabed, rather than a living creature. So for generations, through countless changes and shifts in the seabed, she continued to sleep a dreamless slumber, awaiting a change which would rouse her once more. Nothing would have stirred her besides, perhaps, a storm of unforeseen scale.

Thus, the Leviathan found herself waking to encounter Anahita of the Tides. As the elemental had plunged distraught into the depths of the ocean, she had felt a rumbling which could have been the Leviathan, or the earth responding to the storm, filling the water. The ocean was still her home, no matter who believed or loved her and who didn’t. And the Leviathan, who herself had once given up life, felt sympathy and gratitude in her sluggish mind for her deliverer. Rising off the ocean floor in a cascade of silt and coral, she joined the elemental; and there, found a fellow soul who had been cast out of the world.

Nowadays, seamen often speak of the monsters they encountered on their journeys. The terrible, lashing Kraken, which dragged entire ships to the bottom of the sea. The gargantuan sea-serpent which, once it had a vessel within its coils, could splinter a warship like a matchbox. However fabricated or true these stories may be, there is one beast of the water which is nearly never spoken of. For those who witness it, are far more likely to die.


Water is a mysterious and volatile thing. It wields vast destructive power yet also the gentle caress of silk. It is whatever it chooses to be in the blink of an eye. And if there were an elemental to reflect this, none else would fit better its nature, than the enigmatic deity given the name: Anahita of the Tides.

Anahita was among the elementals born to the world, alongside the magic they represent to this day. Five were worshipped in grand fashions, their status raised to true deities, and five inevitably were struck down in an absence of faith, leaving them only empty shells. And Anahita, the first to rise and perhaps the most established, was perhaps the most broken. Civilizations once gave their unending respect to her, praying for her to bring generous rains and lessen storms. During these times she was amenable, known and loved by all in her graceful beauty. However even then in that golden age, human greed brought about their own downfall. Unbeknownst to Anahita, scholars of an island in the middle of the ocean were tentatively researching methods to draw from the deities reserves of magic. She was not aware, as it was akin to an ant drinking from the lip of a pond. The scholars knew well of the wrath they would invoke should they anger her. They tread carefully the borders of her mana, and practiced in reserved manners. But of course, the greed in the hearts of humans never remains hidden for long. One scholar sought to take all the power for her own. She found methods to reverse the flow of magic, returning to Anahita a corrupting seed of a spell. A spell which would corrode the deities mind, making her forget the boon the humans had granted her. The scholar’s aim was to weaken the deities' lucidity, so as to take more and more of the magic for her own. This was conducted out of anger and resentment towards the people around her who so readily gave up so much to the goddess. In her rash actions however, she underestimated the wrath of the goddess. In the scholar’s foolish mind, she had blindly ignored how much of the world around her relied upon the ocean’s bounty… and mercy.

A storm unlike any seen before. A typhoon which had the force to tear trees from the ground as if they were weeds. Waves which rivaled the heights of hills. Nearly all who inhabited the coastal city were killed within hours as the area of the land they inhabited was swallowed by the waters. Very few would manage to escape, being swept away in violent currents. All the while, weaving between the mounting howls of the wind and the cracking of the stone foundations, were the otherworldly wails of the goddess betrayed. The scholar had failed, of course. She was among the first killed, dashed violently against stones by the tidal surges. But she had not failed in destroying the goddess’ trust and mind. In a terrible spiral of hatred, the goddess lashed out towards those who she thought had betrayed her, and consequently weakened her own power as faith burned away like the fragile thing it is. And eventually, though winds whipped around her form in the rains, she was no longer the one controlling them. When Anahita’s rage was spent and her scarred mind cleared, the goddess’ heart tore at itself in sorrow and regret, as she fled to the depths broken beyond repair.