Disk of Sorrowful Wisdom

The Disk of Sorrowful Wisdom is a treasure in. It is a worth 25 credits.

Plunder Palace
There is a Disk of Sorrowful Wisdom buried in the dirt near the northern corner of sublevel 1 of the Plunder Palace. There are two Bearded Amprats on the way to retrieve this treasure, which should be dealt with first. A nearby Breadbug may also attempt to steal it, in which case you will need to either damage it or best it in tug-of-war. To collect this treasure, you must throw 2 Pikmin at it.

Cavern for a King
It is right next to a Bloomcap Bloyster roaming around near the center of sublevel 11 of the Cavern for a King. By the time you get to it, it will likely have been swallowed by the enemy. To collect this treasure, you must first defeat the Bloomcap Bloyster, then throw 2 Pikmin at it.