Etajima is a quiet island in Hiroshima Bay known for its historic naval academy and easy coastal scenery, so go expecting low-key sights rather than nightlife. To get around, check ferry timetables in advance and consider bringing or renting a bike or car because buses are sparse; parking at sights is usually available. Plan to visit the Naval Academy museum and stroll the shoreline, sample local oysters and seafood at family-run eateries, and catch a simple island sunset. Practical things to remember: shops and restaurants often close early, ATMs can be limited outside the main town so carry some cash, and lodging tends to be small ryokan or guesthouses so book ahead during weekends and summer.

People visit it mostly for the path that gets submerged at high tide is the “sea promenade” at the far end of the beach. It stretches about 145 meters into the water, and when the tide rises to roughly 3.5 meters, the walkway disappears beneath the waves.