Zamami is a small island in the Kerama group, about 40 kilometres west of Naha in Okinawa. It is the kind of place where the water is so clear you can see the coral from the ferry before you even dock.
Humpback whales migrate to the waters around the Kerama Islands each winter for breeding, and whale watching from Zamami is one of the highlights of the Okinawan winter season — boats depart from the port between January and March. The rest of the year, the draw is the beaches: Furuzamami Beach on the south side is routinely rated among the best in Japan, with white sand and excellent snorkelling right from shore. Ama Beach on the quieter western side is where sea turtles reliably come close to shore.
The island is quiet and small enough to explore on foot or by bicycle. Diving and snorkelling in the Keramashoto National Park waters offers some of the finest reef access in Japan. The Kaminohama Observatory gives panoramic views over the island's southern coastline and the uninhabited islands beyond. There are a handful of guesthouses and dive shops, a few restaurants, and not much in the way of nightlife — which is the whole point. Ferries run from Naha's Tomari Port; the high-speed boat takes about 50 minutes.