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  • Seadragon.png
Stack digit 1.png
TypeWeaponCrafting material
Damage60 Ranged
Knockback2.5 (Very Weak)
Critical chance4%
Use time5 Insanely Fast
TooltipUnleashes a deluge of alternating bullets and pressurized water jets
Additionally fires rockets and emits devastating muzzle blasts
Water jets consume no ammo
Inflicts DebuffWetWet
100% chance

Debuff duration4 seconds (Water Jet, Water Ring)
Debuff tooltipYou are dripping water
Inflicts DebuffHellfireHellfire
100% chance

Debuff duration4 seconds (Muzzle Blast)
Debuff tooltipSlowly losing life
RarityRarity Level: 12
Sell 24 Gold Coin.png
Research1 required
Projectiles created
Sea Dragon Rocket
Sea Dragon Rocket
Flaming Shard
Flaming Shard

The Seadragon is a craftable post-Moon Lord gun that is an upgrade to the Megalodon. It rapidly fires bullets, with every other shots turning into a stream of water that does not consume ammo. It also fires a short-range ring every shot, which deals 50% of the weapon's damage and pierces once. Every 8 shots releases an additional projectile which alternates between a homing rocket and a short-ranged fire blast. The homing rocket deals 300% damage and split into 2-3 flaming shards upon exploding, which each deal 165% damage and pierce twice. The fire blast pierces infinitely, deals 1200% damage, and inflicts the Hellfire debuff.

Its best modifier is Unreal.



Crafting Station
Ancient ManipulatorAncient Manipulator
Armored ShellArmored Shell3
Sea PrismSea Prism10

Used in


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Nerfed damage from 70 to 60. Rockets now deal 3x base damage instead of 5x, and muzzle blast now deals 12x base damage instead of 25x.
  • Now fires a close-range ring projectile on every shot, and a high damage muzzle blast every 17th shot.
  • No longer uses 15 Depth Cells, 15 Lumenyl, or 5 Tenebris in its recipe.
    • Now replaces bullets with a rocket every 18 shots instead of at a 10% chance.
    • Additionally, it replaces bullets with a water stream every other shot.
    • Bullets fired now always consume ammo, while rockets and water streams do not.
    • Now uses 10 Sea Prisms in its recipe.
    • Resprited rocket.
    • Nerfed damage from 108 to 70.
    • Resprited.
  • Fire projectile now uses Totality Breakers' fire projectile instead of Molotov Cocktail's.
    • Buffed damage from 110 to 125, but decreased the size of rocket explosions.
    • Rocket explosions now pierce infinitely and grant 10 local immunity frames.
  • Now uses 15 Depth Cells, 15 Lumenyl, and 5 Tenebris in its recipe.