Hoop of Passion

The Hoop of Passion is a treasure in. It is a glowing magenta, and can be found in the Engulfed Castle and the The Mud Pit.

Engulfed Castle
There is a Hoop of Passion lying on the ground at the center of sublevel 1 of the Engulfed Castle. To collect this treasure, you must first lower the iron fences by pressing the button in the northwestern corner, then throw 3 Pikmin at it.

The Mud Pit
There is a Hoop of Passion lying in an island in the middle of the mud, near the center of sublevel 1 of The Mud Pit. To collect this treasure, you must throw 3 Pikmin at it while sliding down from the rail that starts south of the treasure.