From the Super Mario Wiki
This article is about the enemy from Super Mario World 2: Yoshi's Island
. For information about the enemy from New Super Mario Bros.
, see here
A Boo Balloon is a Boo in the shape of a blue balloon in Super Mario World 2: Yoshi's Island. They race about the screen, trying to deal damage to Yoshi. They will inflate when hit with a Yoshi Egg. After three hits, they will explode, yielding coins or sometimes a ! Switch.
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