Watatsumi-no-kami is a Shinto deity of the sea, part of the broader Watatsumi lineage of ocean kami revered in Japanese mythology as ancient tutelary spirits governing the waters, tides, and marine life. Shodo-no-mikoto is understood as an aspect or title within this sea-deity tradition, honored particularly by fishing communities and seafarers who look to the Watatsumi kami as guardians of safe passage and the bounty of the ocean. Worship of these deities is documented in early Japanese chronicles and continues today at shrines dedicated to the sea, reflecting the deep cultural ties between coastal life and reverence for the ocean's power.