Cheer-o-Sphere

The Cheer-o-Sphere is a treasure in, that can be found in the Echo Cavern area. It is a see-through with a green  inside. The treasure is two times the size and width of Captain Olimar.

Collecting the treasure
After going through a doorway, the player will encounter some cobblestone blocks, blocking the way to the treasure. Olimar must use a bomb rock to destroy those blocks; one can be found right before the wall of blocks.