Sponge

A Sponge is an obstacle that appears in some fan-made Pikmin games. Sponges take the form of a soft, porous, yellow structure that is highly absorbent. This means it can take in and store Water and remove it from the local area. By doing so the sponge will grow either becoming a large lump or a flat structure, the latter of which could be used as a bridge. While the removal of water would at first seem like a good thing, if the area in question features items that only react in water, then it would be encouraged for Blue Pikmin to attack the sponge to release the water inside. Depending on the game some sponges are destructible and others are indestructible.

=In fanon games=

In Pikmin: Spark
Sponges are obstacles and members of the Spongefoam family appearing in Pikmin: Spark. They are porous yellow masses with a notable soft texture. Sponges can be found in most watery areas such as Saltwater Glade and Fertile Savanna among other places where they absorb the surrounding water. This makes them grow to titanic sizes in certain circumstances and they will gain a darker color to notify of this change. Sponges come in two shapes, square and round. Square sponges can be carried by Blue Pikmin and when placed down inside water absorb it and grow. This can be used to temporarily suck up water allowing other types to cross these areas, as well as being able to become large bridges over these water bodies allowing access to new areas. Round sponges on the other hand can't be moved and solely act as a container of water that releases the substance when attacked. They are often in areas where progression is linked to the water level so they can also be used as switches for changing said level. Unlike square sponges round sponges come in two colors, yellow and orange, the latter of which disintegrates when destroyed.