Piranha Plants appear in Super Mario 3D World. They act like they do in the Super Mario Galaxy series. They don'tcome in and out of pipes like in 2D Mario games. There is also a new black variety called Inky Piranha Plants, which spit ink that covers the top screen, like a Blooper in the Mario Kart series.
Piranha Plants can also be picked up and be used like yoshi. They automaticly gobble up a near by enemy.