Utsu Shrine is located in the little fishing port of Ocho on Osaki Shimozima Island in the Aki Nada chain of islands in the Inland Sea between Hiroshima and Shikoku.
It was founded in 773 and the kami enshrined here is Yasomagatsuhi no kami which translates as "countless magatsuhi gods" with magatsuhi being a kami that brings about sin, pollution, disaster, disorder etc etc. The kami was produced from the pollutions experienced by Izanagi when he visited Izanami in Yomi, the underworld.
In 1217 a further two kami were added, Kannaobi and Onaobi, which can be translated as Divine Renewal Godm & Great renewal God. They "came into existence" right after Magatsuhi as "rectification".
The shrine became known for protection at sea as well as protection against all forms of "pollution".