Engetsu Island

Engetsu Island is a small, uninhabited islet just off the coast of Shirahama Town, distinguished by a natural sea arch worn through its center by centuries of wave action, which gives the island its name, meaning "full moon island," for the round opening's resemblance to the moon when viewed from the right angle. The island sits directly beside Route 34 and is visible from a dedicated roadside viewpoint and small parking area between JR Shirahama Station and Shirarahama Beach, requiring no hike or boat trip to see. Photographers gather at the viewpoint particularly around sunset, when the sun aligns with the arch opening on certain days of the year and the sky's colors frame the silhouette of the pine-topped rock. A visit is brief, typically 20 to 30 minutes, enough time to view the island from the platform, walk along the short seaside path, and take photographs from a couple of angles. The island itself cannot be accessed on foot, so the experience is entirely a viewing one from the mainland shore. Sunset draws the largest number of visitors and photographers, while daytime visits offer a quieter, quick stop for those passing along the coastal road between Shirahama's main sights.