"Wadatsumi" or Watatsumi is a Shinto sea god. Other names in ancient Japanese prose include Watatsumi no ō-kami (Kojiki), Watatsumi no mikoto (Nihongi). The name Watatsumi derives from the words wata-tsu-mochi, literally meaning "holder of the sea," indicating a kami with domain over the ocean.
A tutelary of the sea. According to Kojiki, the sea deity "Ōwatatsumi no kami" was produced by Izanagi and Izanami as part of the process of giving birth to the kami (kamiumi).
Both Kojiki and Nihongi record that when Izanagi returned from the underworld land of Yomi and performed ablution, three Watatsumi deities were produced, representing the "upper" (Uwatsu Watatsumi) "middle" (Nakatsu Watatsumi) and "bottom" (Sokotsu Watatsumi) parts of the water where he bathed.