A mere 2km in diameter, tiny Aka-jima (阿嘉島) makes up for in beauty what it lacks in size. Some of the best beaches in the Keramas and an extremely peaceful atmosphere mean it's easy to get stuck here for several days – and, of course, there's great snorkelling and diving offshore.
If you keep your eyes open around dusk you might spot a Kerama deer (慶良間シカ; kerama shika), descendants of deer that were brought by the Satsuma from Kagoshima when they conquered the Ryūkyūs in 1609. The deer are smaller and darker than their mainland cousins, and have been designated a National Treasure.
It's important to note that the main village on Aka-jima is Zamami-mura but Zamami-jima is the name of the slightly larger island just north of Aka-jima.