Emperor Whistle

The Emperor Whistle is a treasure in  and. It is a metal pea whistle.

Collecting the treasure in Pikmin 2
The treasure is found on sublevel 5 of the Snagret Hole and is held by an agitating Antenna Beetle. It seems fitting that such a noisy bug would be in possession of this treasure.

Collecting the treasure in Pikmin 4
The Emperor Whistle is completely buried on a large sand mound at the southwest of the sand castle, which is at the southern edge of the Serene Shores. It can be located with the Treasure Gauge or Oatchi. To collect this treasure, you must throw 5 Pikmin in its vicinity.