The formal start of the ocean-bathing season at the municipal Tomonoura Bathing Beach. Various events including a prayer for safety and treasure-hunting game are performed.
| Period : | From the middle of July to the middle of August |
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| Venue : | Sensui-jima island, Tomonoura (Tanoura) |
| Fee : | Free |
| Inquiries : | Fukuyama City Tourism Association Inc. TEL(084)926-2650 |

