Human to shark spell

Human to shark
Type	Transfiguration
Effect	Turns caster into a shark

"Harry turned and saw something monstrous cutting through the water toward them: a human body in swimming trunks with the head of a shark.... It was Krum. He appeared to have transfigured himself — but badly."

— Description of Viktor Krum's use of this spell

This spell (incantation unknown) transfigured the caster into a shark.

History

Viktor Krum attempted to use this spell to complete the Second task of the Triwizard Tournament (which took place in the Great Lake), but only managed to transfigure his head. He was able to complete the task successfully regardless.

Behind the scenes

• Despite presumably not being his intention, this partial transfiguration was arguably more effective than a full one would have been. A transfigured human only has the intelligence of the creature they transform into, so this partial transformation allowed him to brave the lake and yet keep the mental capacity to perform the task. It is also possible that Viktor knew he would have lost his human intelligence and intentionally transfigured himself partially.

Appearances

• Harry Potter and the Goblet of Fire (First appearance)
• Harry Potter and the Goblet of Fire (film)
• LEGO Harry Potter: Years 1-4
• LEGO Harry Potter