Onion Replica

The Onion Replica is a treasure found in Pikmin 2. It is simply an. It can be found in the Perplexing Pool behind the landing site, and involves a complicated process to get it; one of the most complicated on-land treasures to get in the game. The Hocotate ship may have called it an "Onion Replica" referring to the fact that the Pikmin's vessels are also referenced by Olimar as Onions.

Collecting the treasure
First a nearby black gate must be destroyed to get behind the landing site, then White Pikmin can be thrown over the edge on the secret path behind the ship. Using the other Leader to guide the Whites onto a small peninsula, and dismissing them on the tip will allow the Whites to detect a completely buried item and begin digging it up. Blue Pikmin will be needed to carry it across the water. To return the Whites to the ship one just has to throw them back over. Along the way Water Dumples and Yellow Wollywogs will attack Pikmin.