A Kappa ("river-child") is a yokai (supernatural monsters) found in Japanese folklore. The name is a combination of the word kawa (river) and wappo, an inflection of waraba (child). In Shinto they are considered to be one of many suijin ("water deity"). Along with the oni and the tengu, the kappa is among the best-known yokai in Japan. The kappa is typically depicted as roughly humanoid in form and about the size of a child. Its scaly reptilian skin ranges in color from green to yellow or blue. Kappa supposedly inhabit the ponds and rivers of Japan, and have various features to aid them in this environment, such as webbed hands and feet. They are sometimes said to smell like fish and they can swim like them. The expression kappa no kawa nagare ("a kappa drowning in a river") conveys the idea that even experts make mistakes. Although their appearance varies from region to region, the most consistent features are a carapace, a beak for a mouth, and a plate (sara), a flat hairless region on the top of the head that is always wet, and is regarded as the source of the kappa's power. Kappa are usually seen as mischievous troublemakers or trickster figures. See "Kappa (folklore)". Wikipedia. Retrieved 2014-12-14.