Kappas are legendary creatures that inhabit the rivers and waterways of Japan. They have beaked noses, shells on their back and a depression on their heads that holds water. Kappa are mischievous troublemakers. Their pranks range from the relatively innocent, such as loudly passing gas or looking up women's kimonos, to the more troublesome such as drowning swimmers and eating children. They feed on their victims by sucking their liver though their anus. They love cucumbers and if you write your name on a cucumber and throw it in the river, the kappa may be appeased by your gift and allow you to swim in peace.