The Optical Illustration is a Ragu pasta sauce lid that is found in the Perplexing Pool in Pikmin 2. It is located near the Citadel of Spiders but is near an electric gate surrounded by water, making a volatile combination. First, defeat any Yellow Wollywogs and Shearwigs you may encounter. If the Dwarf Bulbears are there, take them out too. Build the bridge near the stump near the Citadel of Spiders, then throw your Yellow Pikmin over the wall to where the electric gate is. Alternatively, it is possible to throw Yellow Pikmin over the electric gate from across the water, with a running start for each throw; or a small number can be led along a root in the water on the left of the gate, then thrown over the wall easily. Let them tear it down and let your Blues carry it back to the ship.