Translation: none; this is the creature’s name
Habitat: oceans, seas, and lakes
Appearance: Wani are sea monsters that live in deep bodies of water. They have long, serpentine bodies, fins, and can breathe both air and water. Wani are able to shapeshift into humans, and there are even tales of wani and humans falling in love.
Behavior: Wani are the rulers of the oceans and gods of the sea. They live in splendid coral palaces deep on the ocean floor. Wani have a complex political hierarchy which mirrors that of the surface world. There are kings and queens, princes and princess, courtesans, servants, and so on. Watatsumi, also known as Ryūjin, is the greatest of them. He rules the sea from his palace Ryūgū-jō. He controls the ebb and flow of the ocean using the tide jewels kanju and manju.
Origin: Wani appear in the earliest written records of Japanese myths, the Kojiki and Nihon shoki. Their stories almost certainly date back even further, into the mists of prehistory. Scholars disagree over whether the earliest legends of wani originated in Japan or were imported from other cultures, citing similarities between wani and the Chinese long or the Indian naga. Wani play an important role in Japanese mythology, including in the mythological founding of Japan.
The word wani first appears in the Kojiki written with man’yōgana (an archaic phonetic syllabary). Later it came to be written with the kanji 鰐. Wani came to refer to sharks and other “sea monsters” that sailors and fishermen might encounter out at sea. The sea was a dangerous and mysterious place, and sailors may have thought that sharks were the powerful serpents of legends. Over time, the meaning of the word expanded to include to crocodiles as well as sharks, and then shifted to refer only to crocodiles. Today both the kanji and the name wani mean “crocodile” and are rarely used to refer to sea dragons.
Legends: One of the most famous wani legends is the story of Toyotama hime, the daughter of Watatsumi. She married a surface dweller named Hoori. Hoori and his brother Hoderi were grandchildren of Amaterasu, the goddess of the sun. One day Hoori borrowed and lost Hoderi’s fish hook. Hoderi insisted that Hoori find and return the lost hook, so Hoori went into the ocean to look for it. He was unable to find the hook, but instead he discovered the palace where the dragon king of the sea lived. Hoori visited the palace and asked Watatsumi for help finding the hook. With the dragon god’s help, Hoori found the hook, but in the meantime, Hoori had fallen in love with Toyotama hime, the daughter of the dragon god.
Hoori and Toyotama hime were married, and they lived together at the bottom of the sea for three years. Eventually, Hoori became homesick and longed to see country again. Together, he and his wife returned to the surface world with Hoderi’s lost hook. While on land, Toyotami hime gave birth to a son. When she went into labor, she asked Hoori not to look upon her, because she had to change into her true form in order to bear her child. Hoori became curious and sneaked a peak at his wife while she gave birth. He was shocked to see, instead of his wife, a huge wani cradling their newborn son. The wani was, of course, Toyotama hime in her true form. Toyotama hime was unable to forgive his betrayal, and was so ashamed that she fled back into the ocean and never saw Hoori or her son again.
Although Toyotama hime abandoned her son, her sister Tamayori came to raise him in her absence. The boy, Ugayafukiaezu, grew up to marry Tamayori, and together they had a son. Their son was Jimmu, the first emperor of Japan.