Sumiyoshi no Kami was also a sea god, and the fact that the ujigami (a guardian god or spirit of a particular place in the Shinto religion) of Tsumori clan, the clan in charge of religious services at Sumiyoshi-taisha Shrine enshrining Sumiyoshi no Kami, was Owatatsumi-jinja Shrine, is indicative of the state of the relationship between Watatsumi no Kami and Sumiyoshi no Kami.
住吉神も海の神であり、住吉神を祭る住吉大社の奉祭氏族の津守氏の氏神が大海神社(おおわたつみじんじゃ)であることは、綿津見神と住吉神との関係の消息を暗示していよう。