Withdrawn Arm of Loneliness

The Withdrawn Arm of Loneliness is a treasure found in. As Olimar's description implies, it is a toy robot's arm.

Collecting the treasure
After entering the main room of the level, climb up the three vines to reach the top platform, and walk to the right. There, four more Yellow Pikmin can be found. Above their hiding place are three Sparklium Seeds and a solid dirt block. Break the dirt block, letting the Bloominous Stemples bloom. Using them, a doorway can be found. The treasure is found through the doorway, buried.