Shirahama Ōhama Beach (白浜大浜海水浴場) 白浜大浜海水浴場
700 m of white sand, the largest beach in Izu, with lifeguards six weeks a year.
The sand and access are free all year round, but lifeguarded swimming is seasonal: in 2026 the official period with lifeguards is from 18 July to 31 August, 8:00–16:00. Outside those dates and hours there are no rescue staff.
Shizuoka
下田プリンスホテル, 白浜神社
https://theanimetrip.com/luoghi/spiaggia-di-shirahama-shimoda