Bottom water movements on the outer shelf and marignal terrace off San'in district in the southern Japan Sea are discussed based on sedimentological data such as sediment distribution, distribution and morphology of bedforms, sediment composition and seismic records. Sediment transport and deposition is highly controlled by water circulation in this area. Transport of sandy sediments, and sea bottom erosion and/or non-deposition of modern sediments occurs. Directions of sediment transport judging from sedimentological data are from west to east. This is the same as those of the second branch of the Tsushima Current which flows just over this area and of the eddies which formed between the branches of the Tsushima Current. Beneath the first branch and/or between the first and second branches, modern muddy sediments were distributed. One of them is thought to be deposited in the eddies between the first and second branches at the east of Oki Islands. Bottom currents are also considered to be influenced to the distoribution on the basis of the disturbbution of biotite and volcanic glass shards which have been reworked and transported by the bottom currents at the east of Oki Islands. On the other hand, a small submarine canyon, in which modern sediments have not been deposited and the older sediments are exposed, is located on the mariginal terrace off Tottori. These sedimentological facts indicate the presence of bottom currents along the canyon aixs.