It is said that the Japanese giant salamander is the inspiration behind the mythological creature known as the kappa, an imp or a demon that live in the rivers of Japan. :
Naka-Harima: Delve into the mythical lands of Japanese folklore - WAttention.com
Amazon.com: Death Kappa - Blu-ray / DVD Combo : Misato Hirata, Mika, Ryuki Kitaoka, Tomoo Haraguchi: Movies & TV
Yōkai Senjafuda · Kappa · Mellon Projects
Sōgenji Temple (Kappa-Dera) – Tokyo, Japan - Atlas Obscura
Kappa and Japanese Folklore | Japan Experience
Ancient Aliens: The Legendary Japanese Kappa (S8, E7) | History - YouTube
TIL that there is a type of water demon in Japanese folklore called a Kappa that bears a striking resemblance to someone we met recently… : r/AnimalCrossing