Terraria Wiki
Terraria Wiki

The Celestial Shell is an item introduced in the 1.3 update. It allows the user to gain the effects of both the Moon Shell and Celestial Stone in one accessory. The Celestial Shell is an equipable crafted accessory item which turns the holder into a Werewolf at night and a Merfolk when entering water. The Merfolk aspect takes priority over the Werewolf aspect - e.g. if the player enters water at night, they will turn into a Merfolk until they exit the water.


  • + 10% Damage
  • +2% critical strike chance
  • +4 defense
  • Additional melee speed
  • Faster life regeneration
  • More minion knockback


  • Wearing a Fish Bowl will not transform the player into Merfolk.
  • The transformation overrides armor and other cosmetic items unless the player disables the accesory's visibility, though the player keeps the effects of the armor.
  • Using dyes will change the appearance of the Werewolf/Merfolk, if they were used on the helmet/chest-piece/legging slots. Dyes on anywhere else do not have any effect.

Update Info


  • Now you can hide the transformation while keeping the bonuses, or put it in the vanity slots.


  • Added to the game.