NAMAZU

Big catfish that causes earthquakes

In Japanese mythology, the Namazu (鯰) or Ōnamazu (大鯰) is a giant underground catfish who causes earthquakes. The creature lives under the islands of Japan and is guarded by the god Takemikazuchi enshrined at Kashima, who restrains the catfish with a stone. When the Kashima-god lets his guard fall, Namazu thrashes about, causing violent earthquakes.

Text from en.wikipedia.org/wiki/Namazu

Unknown, The cause of the great catfish at Shin Yoshiwara, 1855

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