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Toyotamahime and the Dragon Palace Faith: Sea Goddess, Urashima Legend, and Watatsumi Shrine
Toyotamahime-no-Mikoto is the sea goddess, daughter of the ocean deity Watatsumi, and wife of Yamasachihiko (Hoori-no-Mikoto). She is venerated at Ryugu shrines and Watatsumi Shrine across Japan as the mythic source of dragon palace faith, renowned for the legend in which she transforms into a wani (sea creature) during childbirth.
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Author
Hijiri
| Shrines & Temples
Contents
MOKUJI
1
Who Is Toyotamahime? The Sea Goddess of the Dragon Palace
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2
Visiting the Shrines of Toyotamahime
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Who Is Toyotamahime? The Sea Goddess of the Dragon Palace
Toyotamahime-no-Mikoto is the divine daughter of Watatsumi, the god of the sea, enshrined in the luminous palace at the bottom of the ocean — the Watatsumi-no-Miya, or Dragon Palace. Her name, meaning “abundantly radiant jewel,” embodies the bounty of the sea itself. She appears in the Kojiki and Nihon Shoki as the central figure of the Umisachi-Yamasachi (Sea Fortune–Mountain Fortune) myth and is venerated today at shrines such as Watatsumi Shrine on Tsushima Island.
The Myth: Yamasachihiko and the Dragon Palace
The grandson of the heavenly deity Ninigi, known as Yamasachihiko (Hoori-no-Mikoto), loses his brother’s fishhook in the sea. Guided by the salt-god Shiotsuchi, he travels to the Dragon Palace, where he meets Toyotamahime. They fall in love, and three years pass in the undersea palace. On his return, Toyotamahime — pregnant with his child — promises to come ashore to give birth. She warns him not to look upon her during delivery, but he breaks this taboo and sees her true form: a great wani (sea creature, often translated as dragon or sea turtle). Shamed, she returns to the sea, leaving behind their son Ugayafukiaezu, who would become the father of Emperor Jimmu, the mythological first emperor of Japan.
Key Deities of the Umisachi-Yamasachi Myth
Deity
Role & Nature
Divine Blessings
Umisachihiko / Hoteri-no-Mikoto
God of sea fortune; the elder brother whose fishhook triggers the myth
Fishing, maritime safety
Yamasachihiko / Hoori-no-Mikoto
God of mountain fortune; visits the Dragon Palace and weds Toyotamahime; ancestor of Emperor Jimmu
Love, marriage, harvest
Toyotamahime-no-Mikoto
Princess of the Dragon Palace; transforms into a wani during childbirth; sea goddess
Safe childbirth, child-rearing, matchmaking, maritime protection
Tamayorihime-no-Mikoto
Younger sister of Toyotamahime; raises the abandoned child Ugayafukiaezu; becomes the mother of Emperor Jimmu
Child-rearing, pure-hearted blessings, good marriage
Visiting the Shrines of Toyotamahime
Watatsumi Shrine (Tsushima) is the most sacred site dedicated to Toyotamahime and Watatsumi. Its torii gate standing in the sea — submerged at high tide, emerging at low tide — is an extraordinary sight that evokes the mythic threshold between the human world and the Dragon Palace.
Ryugu Shrine (Nagasakibana, Kagoshima) stands at the southernmost tip of the Satsuma Peninsula and is linked to the Urashima Taro legend. Ryuguji Temple (Hakata) is a rare intersection of Buddhist and Shinto dragon palace faith, preserving what is said to be a mermaid’s bones from Hakata Bay.
Visitor Tips
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Check tide tables before visiting Watatsumi Shrine on Tsushima — the sea torii is most impressive at high tide
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At Ryugu Shrine (Nagasakibana), clear days offer views of Mt. Kaimon across the sea
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Ryuguji Temple (Hakata) is centrally located; contact the temple in advance to view the mermaid relics
Last updated: May 25, 2026
Watatsumi Shrine (Tsushima) — a striking torii gate standing in the sea, enshrining Toyotamahime and the sea deity Watatsumi
Wikimedia Commons / CC BY-SA 3.0
Ryugu Shrine (Nagasakibana, Kagoshima) — a seaside shrine linked to the Urashima Taro legend, enshrining Toyotamahime
Wikimedia Commons / CC BY-SA 3.0
An illustrated scroll of Urashima Taro — the legend of Toyotamahime's palace of the sea as it took root in popular culture
Wikimedia Commons / Public Domain
Sea turtle — venerated at coastal shrines as a divine messenger and incarnation of Toyotamahime
Wikimedia Commons / CC BY-SA 3.0
Ryuguji Temple (Hakata) — a Buddhist temple linked to dragon palace faith, built to commemorate a mermaid said to have been found in Hakata Bay
Wikimedia Commons / CC BY-SA 3.0
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Author
Hijiri（ひじり）
Shrines & Temples
Toku editorial team — shrines and temples. Former designer who reads temple architecture and gardens through an aesthetic lens, quietly tracing the lineages of sects and doctrines.
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