Kappa- Japanese CreatureCreature · Monster"Water Imp"

The River Child

The kappa is a child-sized creature with green skin, webbed hands, and a tortoise-shell carapace on its back. Its skin is slippery and smells of fish. Its most important feature is the sara, a concave dish on the crown of its head that must always contain water. This water is the source of the kappa's supernatural strength. If it spills, the kappa becomes helpless. Prolonged dryness can kill it.

The Shirikodama

Kappa were genuinely feared in rural communities. They drown people, particularly children who wander too close to rivers and irrigation channels. The method described across widely separated regions is the same: the kappa drags its victim underwater and extracts the shirikodama, a ball-like organ said to reside inside the human body near the anus. Removal is fatal. Kappa also seize horses and cattle by the legs and pull them into the water. Stone markers warning of kappa stood at riverbends and deep pools well into the modern period.

The Bow

The sara provides humans with their one defense. Kappa are bound by a compulsive obligation to return a bow. When a human bows to an approaching kappa, the creature must reciprocate. In bending forward, the water spills from its sara. A weakened kappa may beg for mercy, offering gifts or pledges of good behavior in exchange for having its dish refilled. Tales of quick-thinking villagers saving themselves by bowing appear throughout Japanese folklore, including the collections of Yanagita Kunio.

A kappa who has been helped may repay the debt. Several traditional bone-setting lineages in Japan traced their healing techniques to instruction received from a grateful kappa whose sara had been refilled by a kind farmer.

Cucumbers and Sumo

Kappa are fond of cucumbers. Before swimming in rivers, families would write their names and ages on cucumbers and cast them into the current as offerings. The first cucumber of the season was given to the river before the household ate any. Cucumber roll sushi is still called kappa-maki.

Kappa are also devoted to sumo wrestling. Folktales describe them challenging humans to bouts. A kappa who loses may be compelled to serve the victor or pledge to protect local children from drowning. They are deceptively strong despite their size, but a wrestler who knows the trick can splash or tip the kappa during the bout, spilling the sara and winning by default. The splashing sounds heard at night near rivers were sometimes attributed to kappa practicing sumo among themselves.