Lake Nakaumi

Nakaumi is a broad brackish lagoon between Izumo and Hōki on the coast of the Sea of Japan. The Ōhashi River connects it to Lake Shinji to the west, while the Sakai Channel opens to the sea. Islands including Daikon and Eshima rise from its waters. In the Edo period, algae gathered from the lagoon were used as fertiliser, joining the resources of its shallow waters to the cultivation of the surrounding land.