Celebrate National Cucumber Day by learning about the cucumber-loving yokai, the kappa | SoraNews24 -Japan News-
Kappa, the Water Devil | Japan Avenue
The adorable frog-alligator-platypus tetranodon is a mix of a kappa, a water dwelling yokai, and a sumo wrestler. It even eats cucumber-like slugs (on the monster hunter twitter), much like the kappa. :
The Japanese Kappa: The Mischievous Water Demon's Mythology - Sakuraco
Chirimen-Zaiku Strap Japanese Monster Kappa Cucumber | eBay