"The Bubble-Head Charm is used to allow a person to breathe underwater. An enormous bubble appears around the head of the person casting the spell, which makes their features look oddly wide and stretched."

The Bubble-Head Charm (incantation unknown) is a charm that produces a bubble around the head of the caster, giving them a continuous supply of oxygen, allowing them to breathe where they could not otherwise. It is the most effective spell for breathing underwater or in any environment where fresh air is at a premium, allowing one a supply of oxygen.



Fleur Delacour using the Bubble-Head Charm during the Second Task

The charm causes a protective bubble to form about the caster's head, described to look like upside-down fish bowls; this bubble may allow for underwater exploration or to avoid nasty smells, although wizards with bad breath have reported problems after the first thirty minutes.[1]

Known uses

Caster(s) Date Notes
Cedric Diggory 24 February, 1995 Used during the Second Task of the Triwizard Tournament to enable them to breathe underwater.[2]
Fleur Delacour Underwater
Fleur Delacour
Hogwarts School of Witchcraft and Wizardry students 1996 Students also used this spell after the departure of Fred and George Weasley, when it became fashion to throw Dungbombs and Stink Pellets in the corridors of Hogwarts.[3]

Known practitioners

Behind the scenes

  • In the films, the charm creates a bubble around the mouth and nose, similar to an oxygen mask, not the entire head.
  • It's unclear why Harry Potter was unable to find information on this spell while researching for the second task. It is possible that the spell was a relatively new invention not covered in many books as of 1995, or that the spell was not commonly used for breathing underwater, but for other purposes. It was also said that Harry searched for a spell "that would allow human to survive without oxygen", rather than for some form of oxygen supply.


Notes and references

Community content is available under CC-BY-SA unless otherwise noted.

Build A Wizarding World Collection