The Container of Knowledge is a treasure exclusive to the PAL version of Pikmin 2, where it is actually a Connéctable sardine tin. It is found in one of the Emperor Bulblaxes in the fourth sublevel of the Cavern of Chaos. To collect it, there are a number of strategies. If the Bulblax containing the treasure is not in water, it is possible to throw Purple Pikmin between its eyes on the ground to defeat it quickly and easily; if it is in one of the pools, or when using other types of Pikmin, the Bomb Rocks around the level can be used. Lure the beast near these, then move out of the way as it licks them up; after eating a few, it will die. If any Bomb Rocks are out of the range to which it will follow a Captain, they can be nudged slowly closer by running into them a few times.