Kashuni Waterfall is located at the mouth of the Charasenai River where it plunges into the Okhotsk Sea near the town of Shari in Hokkaido.

'Kashuni' means 'place where there is a cabin for hunting' in the language of the native Ainu people of Hokkaido.

The waterfall drops directly into the sea, so it cannot be seen from the land. The best way to see it is to take a pleasure cruise past. The waterfall is fed by abundant water from the Shiretoko mountains, and falls into the sea through a cave.

The view is very dramatic. Behind the waterfall is a backdrop formed by the Shiretoko mountains, wild rocky cliffs, and a white stream running through the green trees, together producing a spectacular view.